Patent US3855672A successfully refreshed from Google Patents.
US3855672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concealed zip fasteners
Assignee: YKK Corp
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Filing: 1972-08-07
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Granted: 1974-12-24
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Expires: 1992-08-07
Abstract
Abstract A concealed zip fastener is provided with a series of spaced element-receiving openings aligned longitudinally along a reinforced marginal edge of each of two opposed carrier tapes and defining a line of fold along which the tape is folded. These openings are adapted to hold therein a portion of an interlocking fastener element of a meandering form. A row of fastener elements is secured to the folded edge of the tape by a line of stitchings running closely along said series of openings in a manner that the tape resists lateral displacement when lateral stresses are applied in a direction to pull apart the junction of the opposed tapes.
Inventors
- 👤 I Takamatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:41
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/10; A44B19/12; A44B19/24; A44B19/34; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518; Y10T24/2523
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
337 words
A concealed slide fastener comprising, a pair of carrier tapes each having an inwardly folded reinforced longitudinal edge and a series of apertures aligned along said folded longitudinal edge and defining a line of fold along which the tape is folded, a row of coupling elements each having a coupling head, upper and lower leg portions extending from said coupling head in a transverse common direction of said row of coupling elements wherein said lower leg portion extends a greater distance than said upper leg portion, said uPper leg portion being provided with a bent portion at an end remote from said coupling head and extending in a direction transverse to said row of coupling elements and away from said lower leg portion, an upstanding portion extending from an end of said lower leg portion opposite said coupling head in a direction essentially parallel thereto, an upper portion extending from an end of said upstanding portion opposite said lower leg portion in a direction toward said coupling head and essentially parallel to said lower leg portion, a lower base portion extending from an end of said upper portion opposite said upstanding portion in a lateral direction of said row of coupling elements and connecting to a lower base portion of a next adjacent coupling element, an upper base portion extending from said bent portion of said upper leg in a lateral direction of said row of coupling elements opposite the direction of said lower base portion and connecting to an upper base portion of a next adjacent coupling element, said carrier tapes being disposed with said reinforced longitudinal edge between said upper and lower leg portions and said upper base portions and said bent portions of said upper legs extending through corresponding ones of said apertures, a first line of stitches securing said upper and lower leg portions adjacent said coupling head to said folded edge and disposed substantially adjacent said apertures, and a second line of stitches securing said lower leg portion to said folded edge.
Claim 2
Dependent Claim
337 words
A concealed slide fastener comprising, a pair of carrier tapes each having an inwardly folded reinforced longitudinal edge and a series of apertures aligned along said folded longitudinal edge and defining a line of fold along which the tape is folded, a row of coupling elements each having a coupling head, upper and lower leg portions extending from said coupling head in a transverse common direction of said row of coupling elements wherein said lower leg portion extends a greater distance than said upper leg portion, said uPper leg portion being provided with a bent portion at an end remote from said coupling head and extending in a direction transverse to said row of coupling elements and away from said lower leg portion, an upstanding portion extending from an end of said lower leg portion opposite said coupling head in a direction essentially parallel thereto, an upper portion extending from an end of said upstanding portion opposite said lower leg portion in a direction toward said coupling head and essentially parallel to said lower leg portion, a lower base portion extending from an end of said upper portion opposite said upstanding portion in a lateral direction of said row of coupling elements and connecting to a lower base portion of a next adjacent coupling element, an upper base portion extending from said bent portion of said upper leg in a lateral direction of said row of coupling elements opposite the direction of said lower base portion and connecting to an upper base portion of a next adjacent coupling element, said carrier tapes being disposed with said reinforced longitudinal edge between said upper and lower leg portions and said upper base portions and said bent portions of said upper legs extending through corresponding ones of said apertures, a first line of stitches securing said upper and lower leg portions adjacent said coupling head to said folded edge and disposed substantially adjacent said apertures, and a second line of stitches securing said lower leg portion to said folded edge.
Claim 3
Dependent Claim
50 words
In a concealed slide fastener according to claim 1, wherein said upstanding portion extends a distance from said lower leg portion substantially equal to a height of said coupling head so that said upper portion is substantially the same distance from said lower leg portion as said upper leg portion.
Claim 4
Dependent Claim
30 words
In a concealed slide fastener according to claim 1, wherein said upstanding portion extends a distance from said lower leg portion substantially less than a height of said coupling head.
Claim 5
Dependent Claim
303 words
A concealed slide fastener comprising, a pair of carrier tapes each having an inwardly folded reinforced longitudinal edge and a series of apertures aligned along said folded longitudinal edge and defining a line of fold along which the tape is folded, a row of coupling elements each having a coupling head, upper and lower leg portions extending from said coupling head in a transverse common direction of said row of coupling elements wherein said lower leg portion extends a greater distance than said upper leg portion, said upper leg portion being provided with a bent portion at an end remote from said coupling head and extending in a direction transverse to said row of coupling elements and away from said lower leg portion, an upper portion extending from an end of said lower leg portion remote from said coupling head and reversely bent toward said coupling head and curved toward said lower leg portion so as to contact said lower leg portion, a lower base portion extending from an end of said upper portion near said coupling head in a lateral direction of said row of coupling elements and connecting to a lower base portion of a next adjacent coupling element, an upper base portion extending from said bent portion of said upper leg in a lateral direction of said row of coupling elements opposite the direction of said lower base portion and connecting to an upper base porton of a next adjacent coupling element, said carrier tapes being disposed with said reinforced longitudinal edge overlying said upper portions and said bent portions of said upper legs extending through corresponding ones of said apertures, a first line of stitches securing said carrier tapes to said upper leg portions, and a second line of stitches securing said reinforced longitudinal edges to said upper portions.
Claim 6
Dependent Claim
303 words
A concealed slide fastener comprising, a pair of carrier tapes each having an inwardly folded reinforced longitudinal edge and a series of apertures aligned along said folded longitudinal edge and defining a line of fold along which the tape is folded, a row of coupling elements each having a coupling head, upper and lower leg portions extending from said coupling head in a transverse common direction of said row of coupling elements wherein said lower leg portion extends a greater distance than said upper leg portion, said upper leg portion being provided with a bent portion at an end remote from said coupling head and extending in a direction transverse to said row of coupling elements and away from said lower leg portion, an upper portion extending from an end of said lower leg portion remote from said coupling head and reversely bent toward said coupling head and curved toward said lower leg portion so as to contact said lower leg portion, a lower base portion extending from an end of said upper portion near said coupling head in a lateral direction of said row of coupling elements and connecting to a lower base portion of a next adjacent coupling element, an upper base portion extending from said bent portion of said upper leg in a lateral direction of said row of coupling elements opposite the direction of said lower base portion and connecting to an upper base porton of a next adjacent coupling element, said carrier tapes being disposed with said reinforced longitudinal edge overlying said upper portions and said bent portions of said upper legs extending through corresponding ones of said apertures, a first line of stitches securing said carrier tapes to said upper leg portions, and a second line of stitches securing said reinforced longitudinal edges to said upper portions.
Claim 7
Dependent Claim
75 words
A concealed slide fastener according to claim 4, wherein, in each said coupling element said upper portion is curved toward said lower leg portion and contacting said lower leg portion at a point remote froM the end of said lower leg portion remote from said coupling head to define a space therebetween, and said concealed slide fastener further comprises a stiffening cord disposed in said spaces between said upper portions and said lower leg portions.
Claim 8
Dependent Claim
34 words
A concealed slide fastener according to claim 4, wherein, in each said coupling element said upper portion is in contact with said lower leg portion for substantially an entire length of said upper portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |