US3775815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming slide fastener stops
Assignee: Talon Inc
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Filing: 1972-01-25
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Granted: 1973-12-04
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Expires: 1992-01-25
Abstract
Abstract An apparatus for forming a top stop for a slide fastener of the type providing a seam-like closure including a forming block for supporting the slide fastener with its edges folded and the undersides of the folded edges exposed, stock guides supplying fusible material to recesses on either side of the forming block, a forming anvil for shearing the fusible material and defining cavities with the recesses for the fusible material and a member for fusing the material to the undersides of the folded edges to form two separate stop members for the top stop.
Inventors
- 👤 J Johnston
- 👤 G Moertel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:51
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/36; A44B19/42; A44B19/60; B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/40; B29C66/47; B29L; B29L2005/00; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2598; Y10T29/00; Y10T29/51; Y10T29/5101
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
Apparatus for forming end stop means on a slide fastener presenting a seam-like appearance comprising a forming block having a forming area therein, a bore communicating with said forming area, slide fastener guide means extending through said forming areas, and stock guide means having recess means in said forming area, said stock guide means including channel means for delivering fusible material stock to said recess means; a forming anuil disposed in said bore and having an end with a normally withdrawn position on one side of said channel means and an extended position on the other side of said channel means to form cavity means in cooperation with said recess means; and means for placing said end of said forming anvil in said extended position to shear the fusible material and fusing the sheared fusible material to the slide fastener.
Claim 2
Dependent Claim
140 words
Apparatus for forming end stop means on a slide fastener presenting a seam-like appearance comprising a forming block having a forming area therein, a bore communicating with said forming area, slide fastener guide means extending through said forming areas, and stock guide means having recess means in said forming area, said stock guide means including channel means for delivering fusible material stock to said recess means; a forming anuil disposed in said bore and having an end with a normally withdrawn position on one side of said channel means and an extended position on the other side of said channel means to form cavity means in cooperation with said recess means; and means for placing said end of said forming anvil in said extended position to shear the fusible material and fusing the sheared fusible material to the slide fastener.
Claim 3
Dependent Claim
58 words
The apparatus as recited in claim 1 wherein said slide fastener guide means includes a slot having shoulder means for supporting a folded portion of the slide fastener to expose the underside of the folded portion adjacent said recess means whereby said end stop means is formed on the underside of the folded portion of the slide fastener.
Claim 4
Dependent Claim
126 words
The apparatus as recited in claim 1 wherein said slide fastener guide means includes first and second shoulders extending on either side of an elongated slot to support first and second folded portions of the slide fastener and to accommodate tapes of the slide fastener, respectively, to expose the undersides of the first end folded portions, said stock guide means includes a first contoured recess disposed adjacent said first shoulder and a second contoured recess disposed adjacent said second shoulder, said channel means includes a first channel communicating with said first recess and a second channel communicating with said second recess, and said end of said forming anvil is bifurcated to form first and second legs having contours mating with said first and second recesses, respectively.
Claim 5
Dependent Claim
29 words
The apparatus as recited in claim 3 wherein said first and second channels are aligned with each other and disposed in transverse relation to said slide fastener guide means.
Claim 6
Dependent Claim
84 words
The apparatus as recited in claim 4 wherein said forming block has an entrance side and an exit side, said first and second shoulders are on said entrance side of said forming block, said slide fastener guide means includes third and fourth shoulders adjacent said first and second recesses, respectively, on said exit side of said forming block, and said forming area has a top surface, said third and fourth shoulders being disposed closer to said top surface than said first and second shoulders.
Claim 7
Dependent Claim
27 words
The apparatus as recited in claim 5 wherein said third and fourth shoulders are wider than said first and second shoulders to accommodate said end stop means.
Claim 8
Dependent Claim
60 words
The apparatus as recited in claim 1 wherein said forming area has a top surface, and said placing and fusing means includes a fusing member having a flat bottom surface adapted to engage said top surface of said forming area, said fusing member being connected with a source of ultrasonic energy for fusing the fusible material to the slide fastener.
Claim 9
Dependent Claim
31 words
The apparatus as recited in claim 7 wherein said first and second legs of said forming anvil each have a flat face with a plurality of energy directing projections extending therefrom.
References Cited (Backward Citations)
US2961757A
Cited
US3698064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |