Patent US3770359A successfully refreshed from Google Patents.
US3770359A
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US
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Apparatus for the manufacture of hook fabric material for fasteners
Assignee: Velcro Industries BV
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Filing: 1972-09-25
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Granted: 1973-11-06
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Expires: 1992-09-25
Abstract
Abstract Methods are disclosed including the use of heat and chemicals for converting loops upstanding from a base fabric into hook members suitable for use in hook and loop fasteners.
Inventors
- 👤 H Hamano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:55
CPC Classifications
D; D06; D06C; D06C29/00; A; A44; A44B; A44B18/00; A44B18/0046; A44B18/0061; A44B18/0065; B; B29; B29C; B29C59/00; B29C59/02; B29C59/022; B29C59/025; B29C67/00; B29C67/0044; D04; D04B; D04B21/00; D04B21/02; D04B21/04; D04B21/20; D04B35/00; D06C13/00; D06C13/08; B29C2793/00; B29L; B29L2031/00; B29L2031/727; B29L2031/729; B29L2031/765; D10; D10B; D10B2501/00; D10B2501/06; D10B2501/063; D10B2501/0632; Y; Y10; Y10S; Y10S425/00; Y10S425/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
An apparatus for converting a series of loops upstanding from a base fabric into upright projections having knob-like ends comprising means for maintaining said loops in an upright position, heated platen means for deforming and separating the summits of said loops and pressure plate means for crushing cooling and molding said ends into knob-like projections.
Claim 2
Independent Claim
55 words
An apparatus for converting a series of loops upstanding from a base fabric into upright projections having knob-like ends comprising means for maintaining said loops in an upright position, heated platen means for deforming and separating the summits of said loops and pressure plate means for crushing cooling and molding said ends into knob-like projections.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |