Patent US3736628A successfully refreshed from Google Patents.
US3736628A
Expired / Lapsed
US
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Stringer having bonded coupling element
Assignee: LYSTA
•
Filing: 1971-02-10
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Granted: 1973-06-05
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Expires: 1991-02-10
Abstract
Abstract A stringer for an ''''invisible'''' or concealed slide fastener has a pair of stringer halves each comprising a support tape with a doubled-over edge flap to which is bonded an elongated coupling element formed by a series of coupling members. Each element is bonded to the edge flap right up to the edge fold and to this end is formed with a planar surface containing the edge flap. Each member comprises a coupling head of sufficient thickness to ensure a good grip with the opposing members, and a much thinner connecting piece which connects its respective head with the neighboring head to make the fastener flexible.
Inventors
- 👤 H Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:35
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/40; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2536; Y10T24/2539; Y10T24/2557; Y10T24/2591
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
A slide-fastener stringer for a slide fastener of the concealed type, comprising a pair of support tapes each having flaps turned about respective fold lines, the fold lines of said tapes being closely juxtaposed; and a pair of molded synthetic resin coupling elements each mounted on the respective tapes, each of said coupling elements comprising a coupling member extending substantially the full thickness of the coupling elements and forming an enlarged head engageable between the heads of the other coupling element, a neck of reduced width in the longitudinal direction of the coupling elements, and a body connected to said neck, each coupling element further comprising webs of the synthetic resin bridging successive bodies, said heads, necks, bodies and webs of each coupling element having a continuous flat surface adhesively bonded to the respective flap at least to the region of said head.
Claim 2
Dependent Claim
143 words
A slide-fastener stringer for a slide fastener of the concealed type, comprising a pair of support tapes each having flaps turned about respective fold lines, the fold lines of said tapes being closely juxtaposed; and a pair of molded synthetic resin coupling elements each mounted on the respective tapes, each of said coupling elements comprising a coupling member extending substantially the full thickness of the coupling elements and forming an enlarged head engageable between the heads of the other coupling element, a neck of reduced width in the longitudinal direction of the coupling elements, and a body connected to said neck, each coupling element further comprising webs of the synthetic resin bridging successive bodies, said heads, necks, bodies and webs of each coupling element having a continuous flat surface adhesively bonded to the respective flap at least to the region of said head.
Claim 3
Dependent Claim
22 words
The stringer defined in claim 1, wherein said coupling elements are each welded to the respective flap along the respective flat surface.
Claim 4
Dependent Claim
22 words
The stringer defined in claim 2, wherein each coupling element is adhesively bonded to the respective flap over its entire flat surface.
Claim 5
Dependent Claim
20 words
The stringer defined in claim 3, wherein each of the heads is formed as a pair of offset disk portions.
Claim 6
Dependent Claim
18 words
The stringer defined in claim 2, wherein each of said coupling elements is molded onto the respective flap.
References Cited (Backward Citations)
US2035675A
Cited
US2066060A
Cited
US3141217A
Cited
FR1453103A
Cited
US3430304A
Cited
US3517422A
Cited
US3484906A
Cited
US3541649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |