US3594873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant fastening device and method of manufacture
Assignee: American Velcro Inc
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Filing: 1969-03-10
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Granted: 1971-07-27
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Expires: 1989-03-10
Abstract
Abstract A separable fastening device, resistant to flame and having a very large number of closely spaced hooking elements of the hook and loop type, such that pressing opposed surfaces of two fastening members together in face-to-face relation will engage a large number of hooks and loops, is disclosed; the loops are formed from a flame and elevated temperature resistant nylon fiber of very low denier, many filaments of which must first be twisted in an S direction and two each of the twisted strands then reverse plied together in the Z direction to produce a stabilized yarn having sufficient strength and body to form the loops.
Inventors
- 👤 Clive E Hockmeyer Jr
- 👤 Marcel C Ouellette
- 👤 Peter P Ferron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:58
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0069; A44B18/0092; A44B18/0023; A44B18/0034; Y; Y10; Y10T; Y10T24/00; Y10T24/27; Y10T24/2733
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A separable fastening device of the type having two fastening members each provided with a very large number of closely spaceD interengageable hooking elements, one of said fastening members comprising hooks and the other of said members comprising loops and characterized by the property that pressing opposed surfaces of the two fastening members together in face-to-face relation, a large number of hooks will engage a large number of loops, the improvement in combination therewith comprising a base material with said loop elements secured thereto in positions extending generally upright from one surface of the base, said loops being formed from a flame and elevated temperature resistant multifilament high-temperature nylon yarn, said multifilament high-temperature nylon yarn comprising two plied high-temperature nylon strands each of which comprises a number of hightemperature nylon filaments which are twisted in the S direction to form said strands and, subsequently, reverse plied with one another in the Z direction.
Claim 2
Dependent Claim
153 words
A separable fastening device of the type having two fastening members each provided with a very large number of closely spaceD interengageable hooking elements, one of said fastening members comprising hooks and the other of said members comprising loops and characterized by the property that pressing opposed surfaces of the two fastening members together in face-to-face relation, a large number of hooks will engage a large number of loops, the improvement in combination therewith comprising a base material with said loop elements secured thereto in positions extending generally upright from one surface of the base, said loops being formed from a flame and elevated temperature resistant multifilament high-temperature nylon yarn, said multifilament high-temperature nylon yarn comprising two plied high-temperature nylon strands each of which comprises a number of hightemperature nylon filaments which are twisted in the S direction to form said strands and, subsequently, reverse plied with one another in the Z direction.
Claim 3
Dependent Claim
67 words
A separable fastening device according to claim 1 wherein said multifilament high-temperature nylon yarn is comprised of two plied strands of 200-denier high-temperature nylon each of which comprises 100 filaments per strand of 2-denier high-temperature nylon twisted 2 1/2 turns per inch in the S direction and, subsequently, each of said 200-denier strands then being reverse plied together 2 1/2 turns per inch in the Z direction.
Claim 4
Dependent Claim
37 words
A separable fastening device according to claim 1 wherein the base material of the loop-fastening member is woven, with the loop elements interlaced within the base and extending generally upright from one surface of the base material.
Claim 5
Dependent Claim
30 words
A separable fastening device according to claim 1 wherein the base material is shrunk about the roots of the loop-fastening member to interlock the loop elements into the base material.
Claim 6
Dependent Claim
18 words
A separable fastening device according to claim 1 wherein the device is resistant to flame and elevated temperatures.
References Cited (Backward Citations)
US3154837A
Cited
US3461513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |