GB2170260A - A fastener - Google Patents

A fastener Download PDF

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Publication number
GB2170260A
GB2170260A GB08431100A GB8431100A GB2170260A GB 2170260 A GB2170260 A GB 2170260A GB 08431100 A GB08431100 A GB 08431100A GB 8431100 A GB8431100 A GB 8431100A GB 2170260 A GB2170260 A GB 2170260A
Authority
GB
United Kingdom
Prior art keywords
fastener
head
latching
parts
latching member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08431100A
Other versions
GB2170260B (en
GB8431100D0 (en
Inventor
Wing Kwan Yau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WEI CHEONG METALWARE FACTORY L
Original Assignee
WEI CHEONG METALWARE FACTORY L
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WEI CHEONG METALWARE FACTORY L filed Critical WEI CHEONG METALWARE FACTORY L
Priority to GB08431100A priority Critical patent/GB2170260B/en
Publication of GB8431100D0 publication Critical patent/GB8431100D0/en
Publication of GB2170260A publication Critical patent/GB2170260A/en
Application granted granted Critical
Publication of GB2170260B publication Critical patent/GB2170260B/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
    • A44C5/2057—Fasteners locked by sliding or rotating of the male element of the fastener; Turn-button fasteners
    • A44C5/2061—Fasteners locked by sliding or rotating of the male element of the fastener; Turn-button fasteners combined with spring means

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  • Adornments (AREA)

Abstract

A fastener e.g. for jewellery has two parts which can be releasably fastened together. One of the parts (10) comprises a skirt (13) open at one end with a ring or eyelet (14) at its other end and an internal groove (15). The other part (11) comprises a hollow body (17) having a longitudinally movable latching member (21) and at least two latching devices e.g. balls (28) able to project through holes (29) in the wall of the body. The latching member has at one end a head (23) and at the other end a ring or eyelet (25). A resilient means e.g. a spring (30) urges a tapered portion (27) of the head in a direction to cause the balls (28) to move outwardly in their respective holes (29) and to engage the groove (15). Inward movement of the latching member (21) against the spring (30) allows the balls (28) to be released. <IMAGE>

Description

SPECIFICATION A fastener This invention relates to a fastener particularly but not exclusively for a necklace, bracelet or the like.
According to the invention there is provided a fastener having two parts which can be releasably fastened together, one of the parts comprising a skirt open at one end and having attachment means at or adjacent to its other end and an internal circumferentially extending groove intermediate its ends, the other part comprising a hollow body having first and second end portions, a latching member held captive relative to the body and movable longitudinally therein, and at least two latching devices carried by the body and able to project through respective transversely extending holes in the wall of the first end portion of the body, the latching member having at one end a head and at the other end attachment means which project outwardly from the free end of the second end portion of the body, the head having a portion which is tapered inwardly towards the other end of the latching member and there being resilient means between the head of the latching member and the free end of the first end portion of the hollow body to urge the tapered portion of the head into engagement with the latching devices to cause the latter to move outwardly in their respective holes, the latching devices being aligned with the circumferential groove in the one fastener part when the latter is fitted over the first end portion of the other fastener part so that the latching devices project into the groove and hold the two fastener parts together.
Preferred and/or optional features of the invention are set forth in claims 2-7.
The fastener is particularly suitable for use in conjunction with items of jewellery, such as necklaces, bracelets or the like.
The invention will now be more particularly described, by way of example, with reference to the accompanying drawing which is a longitudinal section through one embodiment of a fastener according to the invention, shown on an enlarged scale with the two fastener parts fastened together.
Referring to the drawing the fastener shown therein comprises two fastener parts 10 and 11. The part 10 is generally cup-shaped and has an end wall 12 and a skirt 13. An attachment member in the form of a ring or eyelet 14 is integral with the end wall 12. The skirt has an internal circumferentially extending groove 1 5 intermediate its ends and a bevelled edge 16 at its open end to help guide it over the part 11.
The part 11 comprises a hollow body 17 closed at one end and having first and second end portions 18 and 19 respectively with a radial shoulder 20 therebetween, and a latching slider 21 held captive with respect to the body 17 by an inturned lip or flange 22 at the other end of the body 17.
The slider 21 has a head 23 at one end, a guide portion 24 with an integral attachment member in the form of a ring or eyelet 25 at the other end, and a stem portion 26 between the head 23 and the guide portion 24. The ring or eyelet 25 projects outwardly from the free end of the end portion 19 of the hollow body 17 and the head 23 has a frusto-conical portion 27 which tapers inwardly towards the guide portion 24.
Two latching devices (although there could be more than two) in the form of balls 28 are located in respective diametrically opposite transversely extending holes 29 in the wall of the first end portion 18 of the hollow body 17, and between the head 23 and the guide portion 24 of the slider 21. A spring 30 or other resilient member such as a block of resilient material, e.g. rubber, is interposed between the head 23 and the closed end of the hollow body 17. This spring 30 urges the frusto-conical portion 27 of the head into engagement with the latching balls 28 so as to push these radially outwardly in their respective holes 29, although the force of the spring 30 is insufficient to push the balls 29 totally through the holes 29.
In order to fasten the two parts 10 and 11 together, the part 10 is slid over the first end portion 18 of the part 11 until it makes contact with the shoulder 20. In this position the balls 28 seat in the groove 15 to hold the two parts 10 and 11 together.
In order to release the two parts 10 and 11, the slider 21 is pushed inwardly against the force of the spring 30 so as to disengage the frusto-conical portion 27 of the head 23 from the balls 28, whereupon the two parts 10 and 11 can be pulled apart.
As shown in the drawing, the two parts 10 and 11, when fastened together, define a smooth outer contour which is symmetrical on either side of a central transverse plane which contains the line of contact between the part 10 and the shoulder 20 on the part 11.
A fastener as described above is ideally suited, inter alia for use in conjunction with an item of jewellery, such as a necklace or a bracelet, the two ends of which are connected to the rings or eyelets 14 and 25 respectively.
1. A fastener having two parts which can be releasably fastened together, one of the parts comprising a skirt open at one end and having attachment means at or adjacent to its other end and an internal circumferentially extending groove intermediate its ends, the other part comprising a hollow body having first and second end portions, a latching member held captive relative to the body and
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A fastener This invention relates to a fastener particularly but not exclusively for a necklace, bracelet or the like. According to the invention there is provided a fastener having two parts which can be releasably fastened together, one of the parts comprising a skirt open at one end and having attachment means at or adjacent to its other end and an internal circumferentially extending groove intermediate its ends, the other part comprising a hollow body having first and second end portions, a latching member held captive relative to the body and movable longitudinally therein, and at least two latching devices carried by the body and able to project through respective transversely extending holes in the wall of the first end portion of the body, the latching member having at one end a head and at the other end attachment means which project outwardly from the free end of the second end portion of the body, the head having a portion which is tapered inwardly towards the other end of the latching member and there being resilient means between the head of the latching member and the free end of the first end portion of the hollow body to urge the tapered portion of the head into engagement with the latching devices to cause the latter to move outwardly in their respective holes, the latching devices being aligned with the circumferential groove in the one fastener part when the latter is fitted over the first end portion of the other fastener part so that the latching devices project into the groove and hold the two fastener parts together. Preferred and/or optional features of the invention are set forth in claims 2-7. The fastener is particularly suitable for use in conjunction with items of jewellery, such as necklaces, bracelets or the like. The invention will now be more particularly described, by way of example, with reference to the accompanying drawing which is a longitudinal section through one embodiment of a fastener according to the invention, shown on an enlarged scale with the two fastener parts fastened together. Referring to the drawing the fastener shown therein comprises two fastener parts 10 and 11. The part 10 is generally cup-shaped and has an end wall 12 and a skirt 13. An attachment member in the form of a ring or eyelet 14 is integral with the end wall 12. The skirt has an internal circumferentially extending groove 1 5 intermediate its ends and a bevelled edge 16 at its open end to help guide it over the part 11. The part 11 comprises a hollow body 17 closed at one end and having first and second end portions 18 and 19 respectively with a radial shoulder 20 therebetween, and a latching slider 21 held captive with respect to the body 17 by an inturned lip or flange 22 at the other end of the body 17. The slider 21 has a head 23 at one end, a guide portion 24 with an integral attachment member in the form of a ring or eyelet 25 at the other end, and a stem portion 26 between the head 23 and the guide portion 24. The ring or eyelet 25 projects outwardly from the free end of the end portion 19 of the hollow body 17 and the head 23 has a frusto-conical portion 27 which tapers inwardly towards the guide portion 24. Two latching devices (although there could be more than two) in the form of balls 28 are located in respective diametrically opposite transversely extending holes 29 in the wall of the first end portion 18 of the hollow body 17, and between the head 23 and the guide portion 24 of the slider 21. A spring 30 or other resilient member such as a block of resilient material, e.g. rubber, is interposed between the head 23 and the closed end of the hollow body 17. This spring 30 urges the frusto-conical portion 27 of the head into engagement with the latching balls 28 so as to push these radially outwardly in their respective holes 29, although the force of the spring 30 is insufficient to push the balls 29 totally through the holes 29. In order to fasten the two parts 10 and 11 together, the part 10 is slid over the first end portion 18 of the part 11 until it makes contact with the shoulder 20. In this position the balls 28 seat in the groove 15 to hold the two parts 10 and 11 together. In order to release the two parts 10 and 11, the slider 21 is pushed inwardly against the force of the spring 30 so as to disengage the frusto-conical portion 27 of the head 23 from the balls 28, whereupon the two parts 10 and 11 can be pulled apart. As shown in the drawing, the two parts 10 and 11, when fastened together, define a smooth outer contour which is symmetrical on either side of a central transverse plane which contains the line of contact between the part 10 and the shoulder 20 on the part 11. A fastener as described above is ideally suited, inter alia for use in conjunction with an item of jewellery, such as a necklace or a bracelet, the two ends of which are connected to the rings or eyelets 14 and 25 respectively. CLAIMS
1. A fastener having two parts which can be releasably fastened together, one of the parts comprising a skirt open at one end and having attachment means at or adjacent to its other end and an internal circumferentially extending groove intermediate its ends, the other part comprising a hollow body having first and second end portions, a latching member held captive relative to the body and movable longitudinally therein, and at least two latching devices carried by the body and able to project through respective transversely extending holes in the wall of the first end portion of the body, the latching member having at one end a head and at the other end attachment means which project outwardly from the free end of the second end portion of the body, the head having a portion which is tapered inwardly towards the other end of the latching member and there being resilient means between the head of the latching member and the free end of the first end portion of the hollow body to urge the tapered portion of the head into engagement with the latching devices to cause the latter to move outwardly in their respective holes, the latching devices being aligned with the circumferential groove in the one fastener part when the latter is fitted over the first end portion of the other fastener part so that the latching devices project into the groove and hold the two fastener parts together.
2. The fastener of claim 1, wherein the latching devices are balls.
3. The fastener of claim 1 or claim 2, wherein the attachment means on the one part and on the latching member of the other part are each in the form of a ring or eyelet.
4. The fastener of anyone of claims 1-3, wherein the attachment means are integral with the one body part and the latching member of the other part, respectively.
5. The fastener of anyone of the preceding claims wherein the latching member is held captive relative to the hollow body by an inturned lip or flange at the free end of the second end portion of the body.
6. The fastener of anyone of the preceding claims, wherein the latching member has a guide portion immediately adjacent to the attachment means thereon and a stem portion intermediate the guide portion and the head.
7. The fastener of anyone of the preceding claims, wherein the fastener is symmetrical or substantially symmetrical about a central transverse plane.
8. A fastener substantially as hereinbefore described with reference to, and as shown, in the accompanying drawings.
9. An item of jewellery provided with a fastener according to anyone of the preceding claims.
10. An item of jewellery according to claim 8, in the form of a bracelet.
10. An item of jewellery according to claim 8, in the form of a necklace.
11. An item of jewellery according to claim 9, in the form of a bracelet.
CLAIMS Superseded claims 1-11 New claims 1-10
1. A fastener for jewellery having two parts which can be releasably fastened together, one of the parts comprising a skirt open at one end and having attachment means in the form of a ring or eyelet at or adjacent to its other end and an internal circumferentially extending groove intermediate its ends, the other part comprising a hollow body having first and second end portions, a latching member held captive relative to the body and movable longitudinally therein, and at least two latching devices carried by the body and able to project through respective transversely extending holes in the wall of the first end portion of the body, the latching member having at one end a head and at the other end attachment means in the form of a ring or eyelet which projects outwardly from the free end of the second end portion of the body, the head having a portion which is tapered inwardly towards the other end of the latching member and there being resilient means between the head of the latching member and the free end of the first end portion of the hollow body to urge the tapered portion of the head into engagement with the latching devices to cause the latter to move outwardly in their respective holes, the latching devices being aligned with the circumferential groove in the one fastener part when the latter is fitted over the first end portion of the other fastener part so that the latching devices project into the groove and hold the two fastener parts together.
2. The fastener of claim 1, wherein the latching devices are balls.
3. The fastener of claim 1 or claim 2, wherein the attachment means are integral with the one body part and the latching member of the other part, respectively.
4. The fastener of anyone of the preceding claims wherein the latching member is held captive relative to the hollow body by an inturned lip or flange at the free end of the second end portion of the body.
5. The fastener of anyone of the preceding claims, wherein the latching member has a guide portion immediately adjacent to the attachment means thereon and a stem portion intermediate the guide portion and the head.
6. The fastener of anyone of the preceding claims, wherein the fastener is symmetrical or substantially symmetrical about a central transverse plane.
7. A fastener substantially as hereinbefore described with reference to, and as shown, in the accompanying drawings.
8. An item of jewellery provided with a fastener according to anyone of the preceding claims.
9. An item of jewellery according to claim 8, in the form of a necklace.
GB08431100A 1984-12-10 1984-12-10 A fastener Expired GB2170260B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08431100A GB2170260B (en) 1984-12-10 1984-12-10 A fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08431100A GB2170260B (en) 1984-12-10 1984-12-10 A fastener

Publications (3)

Publication Number Publication Date
GB8431100D0 GB8431100D0 (en) 1985-01-16
GB2170260A true GB2170260A (en) 1986-07-30
GB2170260B GB2170260B (en) 1988-03-09

Family

ID=10570941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08431100A Expired GB2170260B (en) 1984-12-10 1984-12-10 A fastener

Country Status (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10063271A1 (en) * 2000-12-19 2002-07-04 Modul 3 Ingenieurgmbh Seat belt fastener comprises ball attached to buckle on belt which fits into socket containing spring which pushes locking disk to hold locking pins against top of ball
GB2398602A (en) * 2003-02-21 2004-08-25 Rwo Releasable fitting for a sailboat harness
EP1875825A1 (en) 2006-07-07 2008-01-09 Hochschule Pforzheim Clasp for jewellery, in particular for necklaces and bracelets
US7346966B2 (en) 2003-02-21 2008-03-25 Rwo (Marine Equipment) Ltd. Fitting for a harness
GB2444933A (en) * 2006-12-22 2008-06-25 Lee Clarkson Locking device with radially acting detent

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB554634A (en) * 1942-01-28 1943-07-13 Aviat Developments Ltd Improvements relating to coupling pins or shafts
GB575355A (en) * 1944-03-11 1946-02-14 Woodfield Engineering Ltd Improvements relating to coupling pins and like devices
GB969621A (en) * 1959-11-16 1964-09-16 Aerpat Ag Improvements in or relating to connectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB554634A (en) * 1942-01-28 1943-07-13 Aviat Developments Ltd Improvements relating to coupling pins or shafts
GB575355A (en) * 1944-03-11 1946-02-14 Woodfield Engineering Ltd Improvements relating to coupling pins and like devices
GB969621A (en) * 1959-11-16 1964-09-16 Aerpat Ag Improvements in or relating to connectors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10063271A1 (en) * 2000-12-19 2002-07-04 Modul 3 Ingenieurgmbh Seat belt fastener comprises ball attached to buckle on belt which fits into socket containing spring which pushes locking disk to hold locking pins against top of ball
GB2398602A (en) * 2003-02-21 2004-08-25 Rwo Releasable fitting for a sailboat harness
GB2398602B (en) * 2003-02-21 2006-01-18 Rwo Improvements in or relating to a fitting for a harness
US7346966B2 (en) 2003-02-21 2008-03-25 Rwo (Marine Equipment) Ltd. Fitting for a harness
EP1875825A1 (en) 2006-07-07 2008-01-09 Hochschule Pforzheim Clasp for jewellery, in particular for necklaces and bracelets
US7676894B2 (en) 2006-07-07 2010-03-16 Boehm Wolfgang Clasp for jewelry, especially for necklaces and bracelets
GB2444933A (en) * 2006-12-22 2008-06-25 Lee Clarkson Locking device with radially acting detent

Also Published As

Publication number Publication date
GB2170260B (en) 1988-03-09
GB8431100D0 (en) 1985-01-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee