Patent US3864945A successfully refreshed from Google Patents.
US3864945A
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Slide fastener and method of making same
Assignee: Opti Holding AG
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Filing: 1973-04-09
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Granted: 1975-02-11
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Expires: 1993-04-09
Abstract
Abstract A coupling element of the meandering-coil type, with a row of coupling heads formed on bight portions of a series of loops of a monofilament lying substantially in planes perpendicular to that row, is tied to a warp-knitted fabric by knitting stitches interlinking either or both shanks of each loop with a plurality of wales paralleling the row of coupling heads. The transverse courses defined by the warp chains have a spacing equal to the loop spacing, or to an aliquot fraction thereof, with the boundin loop shanks passing through the meshes between successive courses. The warp thread or threads nearest the coupling heads may be of elastic material, in contradistinction to those remote therefrom which should be substantially inelastic.
Inventors
- 👤 Alfons Frohlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:59
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/14; C07D401/02; C07D401/04; C07D403/00; C07D403/14; C07D405/00; C07D405/02; C07D405/04; C07D409/00; C07D409/14
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
A slide-fastener half comprising: an elongate monofilamentary coupling element forming a multiplicity of generally planar transverse loops each with two substantially parallel shanks interconnected by a bight portion, the bight portions of at least some of said loops bearing coupling heads engageable with complementary coupling heads on an adjoining slide-fastener half; and a warp-knit fabric structure with chains of warp threads forming a plurality of parallel wales perpendicular to said loops, the shanks of each loop extending across several of said wales having chain stitches tied around at least one shank of each loop.
Claim 2
Dependent Claim
94 words
A slide-fastener half comprising: an elongate monofilamentary coupling element forming a multiplicity of generally planar transverse loops each with two substantially parallel shanks interconnected by a bight portion, the bight portions of at least some of said loops bearing coupling heads engageable with complementary coupling heads on an adjoining slide-fastener half; and a warp-knit fabric structure with chains of warp threads forming a plurality of parallel wales perpendicular to said loops, the shanks of each loop extending across several of said wales having chain stitches tied around at least one shank of each loop.
Claim 3
Dependent Claim
21 words
A slide-fastener half as defined in claim 1 wherein, the spacing of said loops equals the length of said chain stitches.
Claim 4
Dependent Claim
27 words
A slide-fastener half as defined in claim 1 wherein the chain stitches of said several of said wales form common meshes around both shanks of each loop.
Claim 5
Dependent Claim
26 words
A slide-fastener half as defined in claim 1 wherein said several of said wales comprise pairs of warp chains respectively engaging the shanks of each loop.
Claim 6
Dependent Claim
19 words
A slide-fastener half as defined in claim 4 wherein said pairs of warp chains are interlinked between said shanks.
Claim 7
Dependent Claim
15 words
A slide-fastener half as defined in claim 1 wherein said monofilament is of meandering configuration.
Claim 8
Dependent Claim
40 words
A slide-fastener half as defined in claim 6 wherein the warp thread of at least one chain proximal to said coupling heads is elastic, the warp thread of at least one chain remote from said coupling heads being relatively inelastic.
Claim 9
Dependent Claim
25 words
A slide-fastener half as defined in claim 6 wherein said fabric structure has a width greater than at least the other shank of each loop.
Claim 10
Dependent Claim
18 words
A slide-fastener half as defined in claim 8 wherein said one shank is longer than said other shank.
Claim 11
Dependent Claim
23 words
A slide-fastener half as defined in claim 6 wherein said monofilament is provided with surface formations holding said warp threads in position thereon.
Claim 12
Dependent Claim
39 words
A slide-fastener half as defined in claim 6 wherein only the bight portions of alternate loops are provided with said coupling heads, the intervening loops terminating short of an edge of said coupling element defined by said coupling heads.
Claim 13
Dependent Claim
19 words
A slide-fastener as defined in claim 1 wherein said fabric structure includes laid-in weft threads interlinking said warp threads.
Claim 14
Independent Claim
109 words
A method of making a slide-fastener half, comprising the steps of: forming an elongate monofilamentary coupling elemenT with a multiplicity of generally planar loops having each two substantially parallel shanks interconnected by a bight portion transverse thereto, the bight portions of at least some of said loops bearing coupling heads engageable with complementary coupling heads on an adjoining slide-fastener half; and knitting chains of warp threads to form a fabric structure with a plurality of parallel wales perpendicular to said loops, with engagement of at least one shank of each loop by chain stitches of several of said parallel wales for tying said coupling element into said fabric structure.
Claim 15
Independent Claim
109 words
A method of making a slide-fastener half, comprising the steps of: forming an elongate monofilamentary coupling elemenT with a multiplicity of generally planar loops having each two substantially parallel shanks interconnected by a bight portion transverse thereto, the bight portions of at least some of said loops bearing coupling heads engageable with complementary coupling heads on an adjoining slide-fastener half; and knitting chains of warp threads to form a fabric structure with a plurality of parallel wales perpendicular to said loops, with engagement of at least one shank of each loop by chain stitches of several of said parallel wales for tying said coupling element into said fabric structure.
Claim 16
Dependent Claim
78 words
A method as defined in claim 13 wherein said monofilament is initially formed into a series of flat undulations having said coupling heads diposed along a centerline bisecting said undulations, with the warp chains of said several of said wales forming two groups on opposite sides of said centerline engaging respective half-sections of said undulations, followed by a bending of said monofilament about said centerline with placement of said half-sections in substantially parallel planes to form said shanks.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |