Patent US3696473A successfully refreshed from Google Patents.
US3696473A
Expired / Lapsed
US
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Invisible-type slide fastener
Assignee: GSG Fasteners LLC
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Filing: 1971-05-20
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Granted: 1972-10-10
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Expires: 1991-05-20
Abstract
Abstract Invisible-type fastener is made from ladder-type strip. Projections on edge of each fastening element are engaged by attaching thread to hold each element against lateral slippage with respect to tape.
Inventors
- 👤 Arthur Llewelyn Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:45
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/40; A44B19/403; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2539; Y10T24/2548; Y10T24/2557
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A stringer for an invisible-type slide fastener comprising: a. a strip of connected U-shaped plastic fastening elements each comprising a pair of relatively flat superposed limbs and a base, the base being formed with a head and cavity adapted to matingly engage the base of similar elements on a cooperant stringer, the limbs on one side of the strip each being formed with a V-shaped notch on one transverse edge and a substantially aligned V-shaped projection on the opposite transverse edge, the notch adapted to accommodate the projection on the adjacent element, the U-shaped elements being connected at the end of their limbs respectively by a pair of continuous cords; b. a woven tape folded longitudinally to form a U-shape in transverse cross section with two legs and a connecting bight, the strip being positioned on the tape with the limbs on the said one side of the strip being disposed against one leg of the tape and the bases of the fastening elements being adjacent the bight; and c. thread means securing the strip to the tape, the thread means passing around each fastening element and disposed between the projection and the head whereby the projection limits the lateral movement of the fastener elements on the tape.
Claim 2
Dependent Claim
208 words
A stringer for an invisible-type slide fastener comprising: a. a strip of connected U-shaped plastic fastening elements each comprising a pair of relatively flat superposed limbs and a base, the base being formed with a head and cavity adapted to matingly engage the base of similar elements on a cooperant stringer, the limbs on one side of the strip each being formed with a V-shaped notch on one transverse edge and a substantially aligned V-shaped projection on the opposite transverse edge, the notch adapted to accommodate the projection on the adjacent element, the U-shaped elements being connected at the end of their limbs respectively by a pair of continuous cords; b. a woven tape folded longitudinally to form a U-shape in transverse cross section with two legs and a connecting bight, the strip being positioned on the tape with the limbs on the said one side of the strip being disposed against one leg of the tape and the bases of the fastening elements being adjacent the bight; and c. thread means securing the strip to the tape, the thread means passing around each fastening element and disposed between the projection and the head whereby the projection limits the lateral movement of the fastener elements on the tape.
Claim 3
Dependent Claim
46 words
A stringer as described in claim 1 wherein the outer surfaces of the elements on the limb on said other side of the stringer are each formed with a groove extending longitudinally of the strip, the groove receiving the thread means to protect it against wear.
Claim 4
Dependent Claim
43 words
A chain as described in claim 1 wherein the inner surface of said limbs on said one side of the stringer are formed adjacent their distal ends with a rib defining a shoulder receiving the proximate edge of the tape in abutting relation.
Claim 5
Dependent Claim
16 words
A chain as described in claim 1 wherein the thread means is a line of stitching.
Claim 6
Dependent Claim
182 words
A stringer for an invisible-type slide fastener comprising: a. a strip of connected U-shaped plastic fastening elements each comprising a pair of relatively flat superposed limbs and a base, the base being formed with means adapted to matingly engage the base of similar elements on a cooperant stringer, the limbs being formed with a recess on one transverse edge and a substantially aligned projection on the opposite transverse edge, the recess adapted to accommodate the projection on the adjacent element, the U-shaped elements being connected at the ends of their limbs respectively by a pair of continuous cords; b. a woven tape folded longitudinally to form a U-shape in transverse cross section with two legs and a connecting bight, the strip being positioned on the tape against one leg of the tape and the bases of the fastening elements beinG adjacent the bight; and c. thread means securing the strip to the tape, the thread means passing around each fastening element and disposed between the projection and the head whereby the projection limits the lateral movement of the strip on the tape.
Claim 7
Dependent Claim
182 words
A stringer for an invisible-type slide fastener comprising: a. a strip of connected U-shaped plastic fastening elements each comprising a pair of relatively flat superposed limbs and a base, the base being formed with means adapted to matingly engage the base of similar elements on a cooperant stringer, the limbs being formed with a recess on one transverse edge and a substantially aligned projection on the opposite transverse edge, the recess adapted to accommodate the projection on the adjacent element, the U-shaped elements being connected at the ends of their limbs respectively by a pair of continuous cords; b. a woven tape folded longitudinally to form a U-shape in transverse cross section with two legs and a connecting bight, the strip being positioned on the tape against one leg of the tape and the bases of the fastening elements beinG adjacent the bight; and c. thread means securing the strip to the tape, the thread means passing around each fastening element and disposed between the projection and the head whereby the projection limits the lateral movement of the strip on the tape.
Claim 8
Dependent Claim
35 words
A stringer as described in claim 5 wherein the projection extends out from the fastening element toward such adjacent element beyond a centerline disposed halfway between the two fastening elements and extending parallel to them.
References Cited (Backward Citations)
US3414948A
Cited
US3490111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |