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Patent Abstract
An adjustable jewelry assembly includes a jewelry chain or other
flexible member slidably mounted to a clasp for adjusting a hanging
length or opening size of the flexible member. The clasp is formed
from a single piece of thin sheet material and includes a pair of
walls connected together by a biasing portion. Superimposed tabs
with openings extend from the walls in opposite directions. The
flexible member is normally held against movement in the clasp by
opposing biasing forces exerted by the edges of the openings from
the biasing portion. When the walls are pressed toward each other,
the flexible member may be slid through the clasp until the desired
hanging length or opening size is achieved, then released to clamp
the clasp and flexible member against relative movement.
Patent Claims
1. An adjustable jewelry assembly comprising: an adjustable clasp
including: a first wall; a second wall; a biasing portion extending
between the first and second walls, the biasing portion exerting
a biasing force that tends to push the first and second walls apart;
a first tab extending from the first wall in a first direction;
a second tab extending from the second wall in a second direction
opposite the first direction; at least one first opening extending
through the first tab; and at least one second opening extending
through the second tab; and an elongate flexible member having first
and second legs and a loop portion extending between the first and
second legs, the first and second legs extending through the first
and second openings, the first and second openings being misaligned
under biasing force from the biasing portion to thereby create opposing
forces on the flexible member and prevent relative movement between
the clasp and the first and second legs of the elongate flexible
member; the adjustable clasp being adapted to slide along the first
and second legs to adjust the size of the loop portion of the flexible
member when the first and second tabs are moved relative to each
other against the biasing force to thereby align the first and second
openings.
2. An adjustable jewelry assembly according to claim 1, and further
comprising first and second end stops attached to the first and
second legs, respectively, of the elongate flexible member, the
first and second end stops being larger than at least one of the
at least one first opening and at least one second opening to prevent
removal of the flexible member from the clasp.
3. An adjustable jewelry assembly according to claim 2, and further
comprising a decorative pendant slidably received on the loop portion
of the elongate flexible member.
4. An adjustable jewelry assembly according to claim 3, wherein
the decorative pendant comprises a setting with at least one stone
mounted in the setting.
5. An adjustable jewelry assembly according to claim 4, wherein
the clasp, the elongate flexible member, the end stops, and the
pendant are constructed of at least one of a precious and semi-precious
metal material.
6. An adjustable jewelry assembly according to claim 5, and further
comprising at least one third opening extending through the biasing
portion with the first and second legs extending through the at
least one third opening.
7. An adjustable jewelry assembly according to claim 6, wherein
the biasing portion is curved.
8. An adjustable jewelry assembly according to claim 1, and further
comprising a decorative pendant slidably received on the loop portion
of the elongate flexible member.
9. An adjustable jewelry assembly according to claim 8, wherein
the clasp, the elongate flexible member, and the pendant are constructed
of at least one of a precious and semi-precious metal material.
10. An adjustable jewelry assembly according to claim 1, and further
comprising at least one third opening extending through the biasing
portion with the first and second legs extending through the at
least one third opening.
11. An adjustable jewelry assembly according to claim 10, wherein
the at least one first, second and third openings comprise first,
second and third pairs of openings, respectively.
12. An adjustable jewelry assembly according to claim 10, wherein
the at least one first, second and third openings comprise first,
second and third slotted openings, respectively.
13. An adjustable jewelry assembly according to claim 10, and further
comprising first and second end stops attached to the first and
second legs, respectively, of the elongate flexible member, the
first and second end stops being larger than the at least one third
opening such that the first and second legs are normally not removable
from the clasp through the at least one third opening.
14. An adjustable jewelry assembly according to claim 1, wherein
the first and second walls extend at a first angle in an unrestrained
position and at a second angle in a clamping position, with the
second angle being smaller than the first angle.
15. An adjustable jewelry assembly according to claim 14, wherein
the first and second walls extend generally parallel when the first
and second tabs are moved relative to each other against the biasing
force to thereby align the first and second openings.
16. An adjustable jewelry assembly according to claim 1, and further
comprising a pair of side walls extending from at least one of the
first and second walls toward the other of the first and second
walls.
17. An adjustable jewelry assembly according to claim 1, wherein
the at least one first and second openings comprise first and second
pairs of openings, respectively.
18. An adjustable jewelry assembly according to claim 1, wherein
the at least one first and second openings comprise first and second
slotted openings, respectively.
19. An adjustably jewelry assembly according to claim 1, wherein
the adjustable clasp consists essentially of a single, continuous
thin sheet of material.
20. An adjustably jewelry assembly according to claim 1, wherein
the tabs are located at a position between the biasing portion and
an outer free end of each wall.
21. An adjustable jewelry assembly according to claim 1, wherein
one of the first and second walls of the clasp comprises a setting
with at least one stone mounted in the setting.
22. An adjustable jewelry assembly according to claim 1, wherein
one of the first and second walls of the clasp comprises a decorative
jewelry feature.
Patent Description
BACKGROUND OF THE INVENTION
[0001] This invention relates generally to jewelry, and more particularly
to a jewelry assembly having an adjustable clasp and a length of
jewelry chain, such as a necklace, bracelet, anklet, and so on,
adjustably held by the clasp for adapting the hanging length or
opening size of jewelry around a person to a desired amount to thereby
accommodate the person's body size, clothing type, and fashion preferences.
[0002] For many years, people have worn necklaces at different
lengths depending upon the prevailing fashion at the time. During
some years the common length has been a short choker length of approximately
fifteen inches. During other years the common length has been eighteen
inches or longer. The trends in length have come and gone repeatedly
over the decades.
[0003] Necklaces commonly comprise a fixed length of flexible chain
made from one or more precious metals, such as gold, silver and
platinum, and these chains are available in a wide variety of designs.
The flexible chains are also commonly adorned with a wide variety
of pendants, which generally comprise one or more precious stones,
such as diamonds, rubies and sapphires, mounted in settings of precious
metal.
[0004] Purchasers of fine jewelry currently select a pendant of
a desirable style and size and have it mounted on a flexible chain
having a fixed length, which is usually fifteen, eighteen, twenty-four,
or thirty inches. If the popular fashion changes, the pendant can
in many cases later be mounted on a chain of a different length,
but this generally requires the purchase of a new chain and also
often requires the services of a professional jeweler to remove
the pendant from the old chain and mount it on the new chain. Thus,
mounting a pendant on a new chain can be inconvenient, time consuming
and expensive.
[0005] Due to the wide variety of body shapes and sizes, a necklace
chain of a given length will hang differently from person to person.
For example, an eighteen-inch necklace chain which hangs at a fashionable
length on an average-sized person would not hang at the same fashionable
length on a relatively larger or relatively smaller person. In some
cases, such persons have been unable to wear necklaces and other
jewelry at appropriate fashionable lengths.
[0006] Moreover, the style and type of a person's clothing can
interfere with the appearance of a necklace and affect the way the
necklace hangs. For example, a pendant which hangs at approximately
the same length as the neckline of the person's clothing can often
be hidden from view by the clothing. Likewise, a pendant which hangs
at a fashionable length when worn over light clothing may not hang
at the same fashionable length when worn over relatively bulky clothing.
[0007] Many necklace chains include a fixed clasp for connecting
and separating opposite ends of the chain for mounting and dismounting
the chain around a person's neck. Such clasps are relatively small
in size and thus are relatively difficult to manipulate.
[0008] In an effort to overcome the afore-mentioned difficulties,
U.S. Pat. No. 6,484,535 to Grosser-Samuels, the disclosure of which
is hereby incorporated by reference, discloses an adjustable jewelry
assembly having a length of chain and various clamping mechanisms
for adjusting the hanging length of the chain and/or pendant mounted
on the chain to accommodate the particular user's clothing style
and size in a relatively quick and easy manner. Although the Grosser-Samuels
adjustable jewelry assembly has found much success and enthusiasm
in the jewelry industry, the clamping mechanism requires multiple
small parts, such as a plunger, biasing member and cap which are
most often constructed of precious metals. The parts must be separately
cast, formed and assembled together using skilled labor, resulting
in additional expense to the adjustable jewelry assembly.
[0009] Accordingly, it is desirable to provide an adjustable jewelry
assembly for adjusting the hanging length or jewelry, such as necklaces
and/or pendants, or to adjust the opening size of necklaces, bracelets,
anklets, etc., to accommodate the particular size and clothing style
of the wearer in a relatively quick and easy manner while reducing
the manufacturing costs associated with the adjustable jewelry assembly.
BRIEF SUMMARY OF THE INVENTION
[0010] The present invention provides an adjustable clasp for precisely
adjusting the length of jewelry, such as necklaces, to easily and
conveniently accommodate the particular size, clothing type, and
fashion preferences of the wearer. Those skilled in the art will
understand that the present invention is not limited to necklaces,
but can also be readily applied to jewelry commonly worn elsewhere,
such as around the waist, wrist and ankle.
[0011] An adjustable jewelry assembly according to one aspect of
the present invention comprises an adjustable clasp and an elongate
flexible member releasably secured to the clasp. The elongate flexible
member forms a loop portion with the clasp and is slidable in the
clasp to adjust the size of the loop portion. The clasp includes
a first wall, a second wall and a biasing portion that extends between
the first and second walls. The biasing portion exerts a biasing
force that tends to push the first and second walls apart. A first
tab extends from the first wall in a first direction and a second
tab extends from the second wall in a second direction opposite
the first direction. At least one first opening extends through
the first tab and at least one second opening extending through
the second tab.
[0012] An elongate flexible member is also provided with first
and second legs and a loop portion that extends between the legs.
The first and second legs extend through the first and second openings,
which are normally misaligned under biasing force from the biasing
portion to thereby create opposing forces on the flexible member
and prevent relative movement between the clasp and the first and
second legs of the flexible member. The adjustable clasp can slide
along the first and second legs to adjust the size of the loop portion
of the flexible member when the first and second tabs are moved
relative to each other against the biasing force to thereby align
the first and second openings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The foregoing summary as well as the following detailed
description of the preferred embodiments of the present invention
will be best understood when considered in conjunction with the
accompanying drawings, wherein like designations denote like elements
throughout the drawings, and wherein:
[0014] FIGS. 1A and 1B are front and rear views, respectively,
showing a clasp, pendant and necklace of an adjustable jewelry assembly
according to the present invention placed around the neck of a wearer
and adjusted to a relatively short length;
[0015] FIGS. 1C and 1D are front and rear views, respectively,
showing the adjustable jewelry assembly according to the present
invention around the neck of a wearer and adjusted to a relatively
long length;
[0016] FIG. 1E is an enlarged view of a clasp in accordance with
a further embodiment of the invention;
[0017] FIG. 2 is an enlarged perspective view of the adjustable
jewelry assembly according to the present invention;
[0018] FIG. 3 is a perspective view of a clasp in a clamping position
according to the present invention that forms part of the adjustable
jewelry assembly of FIG. 2.
[0019] FIG. 4 is a perspective view of the clasp in a closed position;
[0020] FIG. 5 is a longitudinal sectional view of the clasp in
an open position;
[0021] FIG. 6 is a longitudinal sectional view of the clasp in
the closed position showing longitudinal adjustment of a jewelry
chain of the jewelry assembly of FIG. 2;
[0022] FIG. 7 is a longitudinal sectional view of the clasp in
the clamped position to hold the jewelry chain in place;
[0023] FIG. 8 is a top plan view of a clasp blank subsequent prior
to bending;
[0024] FIG. 9 is a top plan view of a clasp blank according to
a further embodiment of the invention;
[0025] FIG. 10 is a top plan view of a clasp blank according to
an even further embodiment of the invention;
[0026] FIG. 11 is a perspective view of a jewelry assembly that
employs the clasp blank of FIG. 10;
[0027] FIG. 12 is a top plan view of a clasp blank according yet
a further embodiment of the invention;
[0028] FIG. 13 is a top plan view of plan view of a clasp blank
according to another embodiment of the invention;
[0029] FIG. 14 is a perspective view of a jewelry assembly that
employs the clasp blank of FIG. 13;
[0030] FIG. 15 is a top plan view of a clasp blank according to
yet a further embodiment of the invention;
[0031] FIG. 16 is a top plan view of a clasp blank according to
a further embodiment of the invention;
[0032] FIG. 17 is an enlarged, longitudinal sectional view of a
jewelry assembly employing the clasp blank of FIG. 16 with the clasp
in the clamped position to hold the jewelry chain in place; and
[0033] FIG. 18 is a longitudinal sectional view of the clasp of
FIG. 17 in the open position.
[0034] It is noted that the drawings are intended to depict typical
or exemplary embodiments of the invention and therefore should not
be considered as limiting the scope thereof. It is further noted
that the drawings are not necessarily to scale. The invention will
now be described in greater detail with reference to the accompanying
drawings.
DETAILED DESCRIPTION OF THE INVENTION
[0035] Referring to the drawings, and to and to FIGS. 1A-1D and
2 in particular, an adjustable jewelry assembly 10 comprises an
elongate, flexible jewelry member 12 and an adjustable jewelry clasp
14. The flexible member 12 can be formed of any suitable material,
such as metal, fabric, string, plastic or silicone, and is preferably
formed as a jewelry chain of base metal such as stainless steel,
nickel, aluminum and so on, and more preferably as semi-precious
or precious metal such as such as gold, silver, platinum, various
alloys thereof and so on, using methods that are well known in the
art.
[0036] As shown, the flexible member 12 includes a loop portion
16 extending from one side of the clasp 14, and a pair of legs 18
and 20 extending from the opposite side of the clasp. The loop portion
16 can extend around the neck 22 of a wearer 24 with the clasp 14
located behind the neck and the legs 18 and 20 extending generally
downward from the clasp. The leg 18 terminates in a first free end
to which a first end stop 26 is attached by means well known in
the art, such as soldering when the components are constructed of
metal. The leg 20 terminates in a second free end to which a second
end stop 28 is attached by similar means. The first and second end
stops 26 and 28 can be fashioned in a wide variety of decorative
and ornamental shapes and can also comprise precious stones, such
as one or more diamonds, rubies, sapphires and so on. Alternatively,
the flexible member 12 can be a single continuous length of material
which itself forms a loop and which therefore would not have a first
free end or a second free end. Thus, in this alternative embodiment,
the first end stop 26 and second end stop 28 would not be present.
[0037] A decorative ornament or pendant 30, which can comprise
a setting with one or more precious stones, such as a diamond 32
as shown, rubies, sapphires and so on, can be mounted on the loop
portion 16 of the flexible member 12. The pendant 30 is preferably
mounted on the flexible member 12 according to means well known
in the art so that the pendant 30 can freely slide along the length
of the loop portion 16. Alternatively, the pendant 30 can be fixedly
connected to the loop portion 16 in a well-known manner.
[0038] Manipulation of the clasp 14, as will be described in greater
detail below, permits the legs 18 and 20 and thus the loop portion
16 to be adjusted to a desired length on the wearer. For example,
when the clasp 14 is adjusted so that the loop portion 16 is of
a relatively short length, the pendant 30, if utilized, hangs relatively
higher on the front of the wearer's neck, with the legs 18 and 20
being of a relatively long length, as shown in FIGS. 1A and 1B.
When the clasp 14 is adjusted so that the loop portion 16 is of
a relatively long length, the pendant 30, if utilized, hangs relatively
lower on the wearer's neck or chest, with the legs 18 and 20 being
of a relatively short length, as shown in FIGS. 1C and 1D. Likewise,
although not shown, it will be understood that when the clasp 14
is adjusted so that the loop portion 16 is at an intermediate length
between the long and short lengths, the pendant 30, would hang at
the intermediate length with the legs 18 and 20 also being of intermediate
length.
[0039] Since the clasp 14 can be positioned at any desired location
relative to the first and second legs 18 and 20, the loop portion
16 of the flexible member 12 can be adjusted to any desired size
and thereby accommodate any desired length, regardless of the wearer's
relative size, clothing styles, and fashion preferences.
[0040] With reference now to FIGS. 2 through 7, the adjustable
clasp 14 is preferably constructed of a single, thin strip of material
and includes a first wall 36 and a first tab 38 extending in a first
direction from the first wall 36. The clasp 14 also has a second
wall 40 and a second tab 42 extending in a second direction opposite
the first direction from the second wall 40, with the first tab
in front of the second tab. However, it will be understood that
the clasp 14 can be constructed with the second tab in front of
the first tab. Preferably, the first and second walls are of a generally
circular planar shape. A biasing portion 44 extends between the
first and second walls 36 and 40, respectively. Although the biasing
portion 44 is shown with a curved shape, it will be understood that
the biasing portion 44 may be straight, V-shaped, inversely curved-shaped,
and so on. A pair of first openings 46 and 48 extend through the
first tab 38 and a pair of second openings 50 and 52 extend through
the second tab 42. Likewise, a pair of third openings 54 and 56
extend through the biasing portion 44. Preferably, each of the pairs
of first, second and third openings are oriented in a lateral direction
on the strip 34.
[0041] Referring now to FIG. 8, a blank 34 of a clasp 14 can be
stamped and formed out of a thin sheet of material in a continuous
operation with well known stamping and forming equipment. Preferably,
the first and second walls 36, 40, the first and second tabs 38,
42, the shape of the biasing portion 44 and the openings 46-56 are
simultaneously formed. The tabs 38 and 42 are preferably bent along
bend lines 58 and 60 during the same operation. Likewise, the area
of the biasing portion 44 between dashed lines 62 and 64 may be
shaped during the same operation but preferably after the tabs are
bent. In this manner, a large number of clasps can be automatically
formed by machine in a much quicker and efficient manner than the
multiple part clasps of the prior art that require separate casting
and assembly steps. It will be understood, of course, that the stamping
and bending operations may be accomplished through separate operations.
[0042] It will also be understood that the clasp 14 can be formed
partially or completely by hand. By way of example, the blank 34
may be cut manually by hand or machine, and the bending may be performed
by hand. In accordance with a further embodiment of the invention,
the clasp 14 may alternatively be formed by well known casting techniques
in either its completed shape as shown in FIG. 3 or in its flat
shape as shown in FIG. 8.
[0043] With reference now to FIG. 1E, in accordance with a further
embodiment of the invention, the clasp 14 may include a setting
53 for mounting a precious stone 55 such as a diamond or the like.
The setting 53 may be simultaneously formed on one of the walls
36, 40 when the clasp 14 is cast, or may be formed separately and
attached to one of the walls through laser welding or the like when
the clasp is separately stamped and bent. The setting 53 is arranged
so that the precious stone 55 is viewable when the adjustable jewelry
assembly 10 is worn. It will be understood that the clasp 14 may
include other settings, stones or ornamental features.
[0044] Referring to FIG. 5, a cross section of the completed clasp
14 is shown in an unstrained or free condition with the first wall
36 and second wall 40 extending at an acute angle A. The angle A,
and thus the amount of bending of the biasing portion 44, depends
on the desired biasing force to be applied against the flexible
member as well as the elasticity of the clasp material and the relative
size and shape of the flexible member 12 (FIG. 2). The biasing portion
44 thus acts as a torsional biasing member to pull the tabs 38 and
42 away from each other.
[0045] As shown in FIGS. 2 and 6, the legs 18 and 20 of the flexible
member 12 extend through the set of first openings 34, 36 and the
set of second openings 38, 40, respectively, of the clasp 14 with
the first and second tabs in an overlapping position. Relative movement
between the clasp 14 and the first leg 18 and second leg 20 is normally
prevented by opposing shear forces acting on the first and second
legs by the edges of the first openings 46, 48 and second openings
50, 52 due to the torsional biasing force created by the biasing
portion 44. In particular, the biasing portion 44 tends to force
the first tab 38 away from the second tab 42 of the clasp 14, and
thereby creates a misalignment between the first openings 46, 48
and second openings 50, 52. This misalignment produces a shear force
on the first leg 18 at the openings 46 and 50 and a shear force
on the second leg 30 at the openings 48 and 52. The opposing shear
forces applied to the first and second legs 18 and 20 keep them
firmly secured within their respective openings when the clasp is
in its normal, prestressed or biased position (FIGS. 2, 3 and 7).
As shown in FIG. 7, the angle B between the first wall 36 and second
wall 40 at the clamped position is less than the angle A (FIG. 5)
at the unbiased position.
[0046] Referring to FIGS. 4 and 6, when it is desired to adjust
the size of the loop portion 16, opposing forces are applied to
the first and second walls 36, 40 of the clasp 14 sufficient to
overcome the biasing force of the biasing portion 44 as represented
by arrows 66 and 68 until the openings 46, 48 of the first tab 38
are aligned with the openings 50, 52 of the second tab 42. The opposing
forces may be applied by the thumb and forefinger of a user. In
this position, the first and second walls 36, 40 are generally parallel
and the clasp 14 is free to slide along the length of the legs 18
and 20 of the flexible member 12 to thereby adjust the length of
the loop portion, and thus the position of a pendant that may be
installed on the loop portion with respect to a wearer. The clasp
14 can then return to its normal, clamping condition as shown in
FIG. 2 by simply removing the external compressive forces applied
to the first wall 36 and second wall 40 to thereby clamp the legs
18 and 20 against movement with respect to the clasp 14. The openings
54 and 56 ensure that the legs 18, 20 do not move laterally out
of the clasp 14 during movement, such as when the clasp is adjusted
or worn. It will be understood that the openings 54 and 56 may be
eliminated.
[0047] In order to assemble the adjustable jewelry assembly 10,
a pendant 30 (FIGS. 1A & 1C), if desired, is first mounted to
the flexible member 20, preferably by sliding or stringing one of
the legs 18, 20 through an aperture or other mounting means (not
shown) of the pendant. The first and second walls 36, 40 of the
clasp 14 are then pressed toward each other until the openings 46,
48 of the first tab 38 are aligned with the openings 50, 52 of the
second tab 42 as previously described. The leg 18 is then threaded
through the aligned openings 46, 50 and the opening 54 of the biasing
portion 44. Likewise, the leg 20 is threaded through the aligned
openings 48, 52 and the opening 56 of the biasing portion, with
the pendant, if used, positioned on the loop portion 16. Once a
suitable length of the legs has been attained, the first and second
walls are released to secure the flexible member 12 against movement
with respect to the clasp 14. The first end stop 26 can then be
attached to the free end of the first leg 18 and the second end
stop 28 can be attached to the free end of the second leg 20, using
suitable attachment means, such as soldering. The first and second
end stops 26, 28 are preferably larger in cross dimension than the
diameter or cross dimension of the openings 46-56 to thereby prevent
disassembly of the adjustable jewelry assembly 10.
[0048] The material of the clasp 14 is preferably compatible with
the material of the flexible member 12, pendant, and end stops.
By way of example, when the flexible member is in the form of a
jewelry chain constructed of 18 karat yellow gold, the strip 34
may also be constructed of 18 karat yellow gold, albeit a different
alloy due to the spring requirements of the clasp. Likewise, the
pendant and end stops may also be constructed of 18 karat yellow
gold. When the jewelry chain 12 is constructed of precious or semi-precious
metals, it is especially important to construct the clasp 14 so
that, on the one hand the clamping force does not deform or kink
the chain, yet on the other hand the clamping force is sufficient
to clamp the jewelry chain against movement.
[0049] As shown in FIG. 4, the clasp 14 is preferably relatively
small in size with a width W of approximately 3 mm, a length L of
approximately 5 mm, and a height H of approximately 2.5 mm. The
openings are preferably sized to receive a chain with a cross dimension
or diameter of about 0.6 mm. It has been found that a clasp constructed
with these general dimensions yields what appears to be a small,
delicately shaped ornamental clasp that complements the jewelry
chain and any pendant that may be used, but unobtrusively and advantageously
holds the loop portion 16 and pendant 30 to the desired position
around a wearer's neck. It will be understood that the above dimensions,
materials, shapes, and so on are given by way of example only and
can vary over a wide range of values, materials and shapes.
[0050] Referring now to FIG. 9, a blank 70 of a jewelry clasp 14A
in accordance with a further embodiment of the invention is illustrated.
The jewelry clasp 14A is similar in construction to the clasp 14
previously described, with the exception that a single slotted opening
72 replaces the separate first openings 46, 48, a single slotted
opening 74 replaces the separate second openings 50, 52, and a single
slotted opening 76 replaces the separate third openings 54, 56.
The slotted openings 72, 74 and 76 of the FIG. 9 embodiment result
in less frictional force during assembly and adjustment of the jewelry
clasp 14A with respect to the flexible member 12.
[0051] Referring now to FIGS. 10 and 11, a jewelry clasp 14B in
accordance with yet a further embodiment of the invention is illustrated.
The jewelry clasp 14B is preferably formed from a blank 80 that
is similar in construction to the clasp 14 previously described,
with the exception that the generally circular first wall 36 and
second wall 40 are replaced with a generally rectangular first wall
82 and second wall 84, respectively. Accordingly, it will be understood
that the first and second walls may be of any convenient functional,
decorative and/or ornamental shape.
[0052] Referring to FIG. 12, a blank 90 of a jewelry clasp 14C
in accordance with another embodiment of the invention is illustrated.
The jewelry clasp 14C is similar in construction to the clasp 14B
previously described, with the exception that the first openings
46, 48, the second openings 50, 52 and the third openings 54, 56
extend in a longitudinal direction of the blank 90. In order to
accommodate the change in orientation of the openings, the tabs
38, 42 and biasing portion 44 may be elongated. It will be understood
that the pairs of openings can be replaced with longitudinal slotted
openings as in the FIG. 9 embodiment.
[0053] With reference to FIGS. 13 and 14, a jewelry clasp 14D in
accordance with yet a further embodiment of the invention is illustrated.
The jewelry clasp 14D is preferably formed from a blank 90 that
is similar in construction to the blank 80 (FIG. 10) previously
described, with the exception that opposing side walls 92 and 94
extend from the first wall 82. The side walls are bent along fold
lines 96 and, as shown in FIG. 14, serve to cover the portion of
the legs 18, 20 that extend through the clasp 14D for a more aesthetic
appearance than the previous embodiments.
[0054] Referring now to FIG. 15, a blank 100 of a jewelry clasp
14E in accordance with a further invention is shown. The blank 100
is similar in construction to the blank 90 previously described
with the exception that the side wall 94 extends from the second
wall 84. Accordingly, it will be understood that the side walls
92 and 94 may be arranged in any combination on one or both walls
82, 84.
[0055] Referring now to FIGS. 16-18, a jewelry clasp 14F in accordance
with a further embodiment of the invention is illustrated. The jewelry
clasp 14F is preferably formed from a blank 110 that includes a
generally rectangular first wall 112, a second wall 114, and a biasing
portion 116 extending between the first and second walls. A first
tab 118 is formed in the first wall 112 and is bent along bend line
120 so that the tab 118 extends toward the second wall 114. A slotted
opening 122 is formed in the tab 118 for receiving the flexible
member 12, as previously described. Likewise, a second tab 124 is
formed in the second wall 114 and is bent along bend line 126 so
that the tab 124 extends toward the first wall 112 adjacent the
first tab 118. 4. A slotted opening 128 is formed in the second
tab 124 for receiving the flexible member 12. A slotted opening
130 is also formed in the biasing portion 116.
[0056] As shown in FIG. 18, since the tabs 118 and 124 are closer
to the biasing portion 116 than the previous embodiments, the shear
force acting on the flexible member 12 will be lower. Accordingly,
the angle C between the first and second walls 112, 114 may be larger
than the angle A (FIG. 5) of the previous embodiments to create
similar shear forces on the flexible member at the slotted openings
122 and 128. Alternatively, the material may be selected with lower
elasticity or higher resistance to deformation. As can be appreciated
from this embodiment, the tabs 118 and 124 may be formed at any
longitudinal position along their respective walls 112 and 114.
[0057] While the invention has been taught with specific reference
to the above-described embodiments, those skilled in the art will
recognize that changes can be made in form and detail without departing
from the spirit and the scope of the invention. By way of example,
it should be sufficiently demonstrated by the above exemplary embodiments
that the adjustable clasp may be formed of any desired shape. Moreover,
although both legs of the flexible member are shown and described
as being slidable with respect to the adjustable clasp embodiments,
one of the legs may be fixed with respect to the clasp, such that
the loop portion is adjusted by sliding the other leg with respect
to the clasp. Thus, the described embodiments are to be considered
in all respects illustrative and not restrictive. The scope of the
invention is, therefore, indicated by the appended claims rather
than by the foregoing description. All changes that come within
the meaning and range of equivalency of the claims are to be embraced
within their scope. |