Patent US3897192A successfully refreshed from Google Patents.
US3897192A
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US
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Apparatus for making monofilamentary slide-fastener members
Assignee: Opti Holding AG
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Filing: 1974-06-05
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Granted: 1975-07-29
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Expires: 1994-06-05
Abstract
Abstract Two synthetic-resin monofilaments are deposited from opposite sides on a continuously moving horizontal carrier strip provided with two rows of longitudinally spaced upstanding lugs disposed along opposite edges thereof. Each monofilament is entrained along an upwardly convex ridge of a respective guide element by a coacting transport element hugging that edge with a concave underside which has a bulge for deforming the filament to provide it with successive coupling heads, the transport elements being swingable in planes transverse to the carrier strip whereas the guide elements are vertically reciprocable to engage and disengage the respective monofilaments in timed relationship with the movement of the associated transport elements and the carrier strip between whose lugs these monofilaments are inserted in the form of narrow loops each carrying one coupling head.
Inventors
- 👤 Helmut Heimberger
- 👤 Karl Griessbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:12
CPC Classifications
B; B29; B29D; B29D5/00; B29D5/04; Y; Y10; Y10S; Y10S425/00; Y10S425/814
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
177 words
An apparatus for making slide-fastener members, comprising: a frame; a carrier element mounted on said frame for unidirectional movement, said carrier element being provided with at least one row of lugs rising from a surface thereof, said lugs being spaced apart in the direction of said movement; feed means on said frame alongside said carrier element for depositing a resinous monofilament on said surface thereof in a sUccession of narrow loops received between consecutive lugs, said feed means including a guide element with a ridge in a plane perpendicular to said direction of movement and a transport element in closely spaced relationship therewith for clamping said monofilament therebetween, said transport element being provided with a bulge facing said ridge for locally deforming an engaged loop-forming section of said monofilament to provide a coupling head at a free end of each loop; and drive means for reciprocating said transport element along said ridge in timed relationship with the movement of said carrier element for intermittently advancing successive loop-forming sections of said monofilament into the spaces between consecutive lugs.
Claim 2
Independent Claim
177 words
An apparatus for making slide-fastener members, comprising: a frame; a carrier element mounted on said frame for unidirectional movement, said carrier element being provided with at least one row of lugs rising from a surface thereof, said lugs being spaced apart in the direction of said movement; feed means on said frame alongside said carrier element for depositing a resinous monofilament on said surface thereof in a sUccession of narrow loops received between consecutive lugs, said feed means including a guide element with a ridge in a plane perpendicular to said direction of movement and a transport element in closely spaced relationship therewith for clamping said monofilament therebetween, said transport element being provided with a bulge facing said ridge for locally deforming an engaged loop-forming section of said monofilament to provide a coupling head at a free end of each loop; and drive means for reciprocating said transport element along said ridge in timed relationship with the movement of said carrier element for intermittently advancing successive loop-forming sections of said monofilament into the spaces between consecutive lugs.
Claim 3
Dependent Claim
42 words
An apparatus as defined in claim 1 wherein said guide element is coupled with said drive means for reciprocation toward and away from said transport element for releasing said monofilament immediately after the insertion of a loop-forming section thereof between consecutive lugs.
Claim 4
Dependent Claim
32 words
An apparatus as defined in claim 1 wherein said ridge is circularly convex toward said transport element, the latter having a circularly concave edge concentric with said ridge provided with said bulge.
Claim 5
Dependent Claim
48 words
An apparatus as defined in claim 1 wherein said lugs form two parallel rows extending along opposite longitudinal edges of said carrier element, said feed means being duplicated on opposite sides of said carrier element for depositing two monofilaments in overlapping relationship between the lugs of said rows.
Claim 6
Dependent Claim
46 words
An apparatus as defined in claim 4 wherein the lugs of said rows are relatively longitudinally staggered, the guide and transport elements on one side of said carrier element being longitudinally offset from the guide and transport elements on the other side of said carrier element.
Claim 7
Dependent Claim
15 words
An apparatus as defined in claim 1 wherein said carrier element is an endless band.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |