US3665584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making flexible strips of material having a pile of hook-shaped elements
Assignee: American Velcro Inc
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Filing: 1970-11-18
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Granted: 1972-05-30
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Expires: 1990-11-18
Abstract
Abstract A method is disclosed for making the hook or loop part of a separable hook and loop type fastener by bending a flexible base strip having a plurality of unbroken hook-shaped rails protruding from one surface thereof into a generally tubular form with the rails extending radially inwardly thereof; and thereafter progressively subjecting spaced-apart cross-sectional segments of each rail alternately and periodically to a rotational cutting action to transform each rail into a row of individually spacedapart resilient hooks or loops.
Inventors
- 👤 George H Erb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:05
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0046; A44B18/0049; B; B26; B26D; B26D1/00; Y; Y10; Y10S; Y10S425/00; Y10S425/814; Y10T; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49785; Y10T29/49995; Y10T29/49996; Y10T29/53; Y10T29/53291; Y10T29/53309; Y10T408/00; Y10T408/29; Y10T408/39
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
71 words
A method for making the hook member of a separable hook and loop type fastener comprising: a. providing a base material with a plurality of upstanding spaced-apart, and unbroken rails extending lengthwise of said base material, each rail having a generally hook or loop shaped cross-sectional configuration; b. progressively cutting away spaced-apart cross-sectional segments of each rail to thereby transform each rail into a row of individual spaced-apart hooks or loops.
Claim 2
Independent Claim
71 words
A method for making the hook member of a separable hook and loop type fastener comprising: a. providing a base material with a plurality of upstanding spaced-apart, and unbroken rails extending lengthwise of said base material, each rail having a generally hook or loop shaped cross-sectional configuration; b. progressively cutting away spaced-apart cross-sectional segments of each rail to thereby transform each rail into a row of individual spaced-apart hooks or loops.
Claim 3
Dependent Claim
25 words
The method according to claim 1 wherein said base material is cooled in order to make said rails more rigid prior to cutting said segments.
Claim 4
Dependent Claim
28 words
The method according to claim 1 wherein said base material is bent transversely into tubular form with said rails extending radially inwardly thereof prior to cutting said rails.
Claim 5
Dependent Claim
58 words
The method according to claim 3 wherein the step of cutting away said segments is accomplished by subjecting each rail alternately and periodically while in said tubular form to the rotational cutting action of a rotary cutter disposed within said tubular form, said cutter being adapted to remove selected spaced-apart cross-sectional segments of each rail upon contact therewith.
Claim 6
Dependent Claim
50 words
The method according to claim 4 wherein said tubular form is fixed with respect to said rotating cutter, said rotating cutter being moved axially through said tubular form to alternately and periodically cut away spaced-apart cross-sectional segments of each rail to form said row of individual spaced-apart hooks or loops.
Claim 7
Dependent Claim
51 words
The method according to claim 4 wherein said rotating cutter is fixed in a translational sense with said tubular form being moved past said rotating cutter in at least a partially encircling relationship thereto, thereby cutting away spaced-apart cross-sectional segments of each rail to form said rows of hooks or loops.
Claim 8
Dependent Claim
30 words
The method according to claim 6 wherein the steps of bending the base material and cutting away spaced-apart cross-sectional segments of each rail are performed substantially simultaneously with each other.
References Cited (Backward Citations)
US3290747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |