Patent US3732604A successfully refreshed from Google Patents.
US3732604A
Expired / Lapsed
US
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Method of severing pile loops in the preparation of separable fasteners
Assignee: American Velcro Inc
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Filing: 1971-01-06
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Granted: 1973-05-15
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Expires: 1991-01-06
Abstract
Abstract A method for uniformly cutting loop-shaped elements upstanding from a foundation sheet by encasing a plurality of filamentary loops in a medium capable of retaining them in a relatively immovable state prior to subjecting portions thereof to a cutting action. In a particular embodiment the loops are cut or milled to form the hook member of a hook and loop type fastener.
Inventors
- 👤 G Erb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:02
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0023; A44B18/0026; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/041
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
71 words
An improved method for uniformly cutting loop-shaped elements secured to and upstanding from a foundation sheet, the improvement comprising encapsulating said elements in a material capable of retaining them in a relatively immovable state, cutting through said encapsulating material to expose said elements at a selected cross-section, cutting through said exposed section while said elements remain fixed in said encapsulating material, and removing said encapsulating material from the cut loop-shaped elements.
Claim 2
Dependent Claim
71 words
An improved method for uniformly cutting loop-shaped elements secured to and upstanding from a foundation sheet, the improvement comprising encapsulating said elements in a material capable of retaining them in a relatively immovable state, cutting through said encapsulating material to expose said elements at a selected cross-section, cutting through said exposed section while said elements remain fixed in said encapsulating material, and removing said encapsulating material from the cut loop-shaped elements.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the encapsulating material is water in the form of ice.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein the encapsulating material is a semi-solid comprising water and a thixotropic material added to the water.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein the encapsulating material is a viscous material in the form of a gel.
Claim 6
Dependent Claim
18 words
The method of claim 2 wherein the cut loop-shaped elements are exposed to heat to remove the water.
Claim 7
Dependent Claim
103 words
An improved method for uniformly cutting loop-shaped elements embedded in and upstanding from a foundation material, said improvement comprising encapsulating said elements in a material capable of retaining them in a relatively immovable state, subjecting the encapsulating material surrounding each pair of loop-shaped elements to the action of a fixed line of cutters thereby exposing one leg of each loop-shaped element at selected cross-sections, cutting through the exposed leg section of each loop-shaped element by means of the continuing action of said cutters while the loop-shaped elements remain fixed in said encapsulating material, and removing said encapsulating material from the cut loop-shaped elements.
Claim 8
Dependent Claim
103 words
An improved method for uniformly cutting loop-shaped elements embedded in and upstanding from a foundation material, said improvement comprising encapsulating said elements in a material capable of retaining them in a relatively immovable state, subjecting the encapsulating material surrounding each pair of loop-shaped elements to the action of a fixed line of cutters thereby exposing one leg of each loop-shaped element at selected cross-sections, cutting through the exposed leg section of each loop-shaped element by means of the continuing action of said cutters while the loop-shaped elements remain fixed in said encapsulating material, and removing said encapsulating material from the cut loop-shaped elements.
Claim 9
Dependent Claim
23 words
The method of claim 6 wherein each cutter is a rotary cutter which cuts through the exposed section of two loop-shaped elements simultaneously.
Claim 10
Dependent Claim
18 words
The method of claim 6 characterized by cutting away a segment of one leg of each loop-shaped element.
References Cited (Backward Citations)
US416151A
Cited
US2167215A
Cited
US3218896A
Cited
US3530687A
Cited
US3550223A
Cited
US3586060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |