US3703026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing a slide fastener
Assignee: Individual
•
Filing: 1971-05-10
•
Granted: 1972-11-21
•
Expires: 1991-05-10
Abstract
Abstract A method of making a slide fastener unit comprising weaving a thermoplastic monofilament through the flank portions of each of two Y-tapes, the monofilament of each tape being looped back and forth through the flanks so that the vertical sections between the flanks of one tape are in staggered or alternating relation to those of the other tape, whereafter these vertical sections are folded, embossed in the middle sections, pre-curved on the side sections and molded to fix the shape with the two tapes in fastened position. A novel folding, embossing, pre-curving, molding and ironing apparatus is also disclosed for the continuous manufacture of the slide fastener separately or in conjunction with a conventional weaving loom.
Inventors
- 👤 Wilhelm Uhrig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:25
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/42; A44B19/52; A44B19/54; Y; Y10; Y10S; Y10S425/00; Y10S425/814; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/51; Y10T29/5101; Y10T29/5116; Y10T29/5117; Y10T29/53; Y10T29/53291
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
177 words
Apparatus for manufacturing a slide fastener unit from an assembly comprising two Y-support tapes having a thermoplastic monofilament woven through the flank portions of each of said tapes, the monofilament of each tape being looped back and forth through the flanks so that the vertical strand sections between the flanks of one tape are staggered in relation to those of the other tape, said apparatus comprising: flattening and folding means for flattening one flank of each of said support tapes while swinging back the other flank to thereby fold the vertical strand sections and form intermediate engagement surfaces on each section; heated embossing means to deform the intermediate engagement surfaces and side surfaces of each of the strands; aligning and fastening means which brings together the two embossed tapes into interengaging relationship so that the sides of the vertical strand sections are now brought together into a common plane to engage with each other; and, heated molding means which sets the pressed together interengaging portions of the vertical sections and thereby produces a fastened together fastener unit.
Claim 2
Dependent Claim
177 words
Apparatus for manufacturing a slide fastener unit from an assembly comprising two Y-support tapes having a thermoplastic monofilament woven through the flank portions of each of said tapes, the monofilament of each tape being looped back and forth through the flanks so that the vertical strand sections between the flanks of one tape are staggered in relation to those of the other tape, said apparatus comprising: flattening and folding means for flattening one flank of each of said support tapes while swinging back the other flank to thereby fold the vertical strand sections and form intermediate engagement surfaces on each section; heated embossing means to deform the intermediate engagement surfaces and side surfaces of each of the strands; aligning and fastening means which brings together the two embossed tapes into interengaging relationship so that the sides of the vertical strand sections are now brought together into a common plane to engage with each other; and, heated molding means which sets the pressed together interengaging portions of the vertical sections and thereby produces a fastened together fastener unit.
Claim 3
Dependent Claim
177 words
Apparatus for manufacturing a slide fastener unit from an assembly comprising two Y-support tapes having a thermoplastic monofilament woven through the flank portions of each of said tapes, the monofilament of each tape being looped back and forth through the flanks so that the vertical strand sections between the flanks of one tape are staggered in relation to those of the other tape, said apparatus comprising: flattening and folding means for flattening one flank of each of said support tapes while swinging back the other flank to thereby fold the vertical strand sections and form intermediate engagement surfaces on each section; heated embossing means to deform the intermediate engagement surfaces and side surfaces of each of the strands; aligning and fastening means which brings together the two embossed tapes into interengaging relationship so that the sides of the vertical strand sections are now brought together into a common plane to engage with each other; and, heated molding means which sets the pressed together interengaging portions of the vertical sections and thereby produces a fastened together fastener unit.
Claim 4
Dependent Claim
177 words
Apparatus for manufacturing a slide fastener unit from an assembly comprising two Y-support tapes having a thermoplastic monofilament woven through the flank portions of each of said tapes, the monofilament of each tape being looped back and forth through the flanks so that the vertical strand sections between the flanks of one tape are staggered in relation to those of the other tape, said apparatus comprising: flattening and folding means for flattening one flank of each of said support tapes while swinging back the other flank to thereby fold the vertical strand sections and form intermediate engagement surfaces on each section; heated embossing means to deform the intermediate engagement surfaces and side surfaces of each of the strands; aligning and fastening means which brings together the two embossed tapes into interengaging relationship so that the sides of the vertical strand sections are now brought together into a common plane to engage with each other; and, heated molding means which sets the pressed together interengaging portions of the vertical sections and thereby produces a fastened together fastener unit.
Claim 5
Dependent Claim
35 words
Apparatus as claimed in claim 1, wherein bending means are provided for pre-curving the side parts of the vertical strands after embossing and before the two tapes are fastened in the aligning and fastening means.
Claim 6
Dependent Claim
28 words
Apparatus as claimed in claim 2, wherein reversing rollers and reversing pins are provided to tension the two tapes prior to entering into the aligning and fastening means.
Claim 7
Dependent Claim
29 words
Apparatus as claimed in claim 3, wherein said reversing rollers or reversing pins are offset from the feeding zone which feeds the tapes into the aligning and fastening means.
Claim 8
Dependent Claim
24 words
Apparatus as claimed in claim 1, wherein said heated embossing means includes an embossing roller having a raised embossing bead and a mating roller.
Claim 9
Dependent Claim
23 words
Apparatus a claimed in claim 2, wherein said bending means comprises a molding roller having a molding bead and a mating roller therefor.
Claim 10
Dependent Claim
32 words
Apparatus as claimed in claim 6, wherein said bending means further includes a heated U-shaped duct, said heated duct serving to fix the curvature of the side portions of the vertical strands.
Claim 11
Dependent Claim
33 words
Apparatus as claimed in claim 2, wherein said bending means comprises a heated molding duct having a rectangular cross-section in the inlet portion thereof and an arcuate cross-section in the exit portion thereof.
Claim 12
Dependent Claim
48 words
Apparatus as claimed in claim 1, wherein said aligning means includes rollers and two reversing pins which are adjacent and parallel to each other so that the pre-curved side portions of the vertical strands are spread and each of the reversing pins guides each tape in parallel fashion.
Claim 13
Dependent Claim
56 words
Apparatus as claimed in claim 9, wherein said heated molding means comprises a heated slit-shaped duct having an expanded portion in the middle thereof to accommodate the two fastened support tapes therein, said duct further including laterally adjoining slits which accommodate the right-hand and left-hand side of the expanded zone where the two tapes come together.
Claim 14
Dependent Claim
23 words
Apparatus as claimed in claim 10, wherein the axes of the reversing pins are disposed perpendicularly to the plane of the molding duct.
Claim 15
Dependent Claim
64 words
Apparatus as claimed in claim 10, wherein the molding duct has an H-shaped exit cross-section and includes end ribs expanding in the longitudinal direction of the duct to reinforce the upper and lower walls of the duct, the space between the ribs accommodating folding side parts which form four grooves, the four grooves accommodating the four outer flank parts of the two Y-support tapes.
Claim 16
Dependent Claim
36 words
Apparatus as claimed in claim 1, wherein tubular ironing means are provided downstream of said heated molding means, said ironing means comprising a heated slit-shaped duct, a middle portion with expanded cross-section, and an exit portion.
References Cited (Backward Citations)
US3461486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |