US3719545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced laminated material
Assignee: CA ACQUISITION Co CHICAGO ILL A CORP OF
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Filing: 1971-03-15
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Granted: 1973-03-06
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Expires: 1991-03-15
Abstract
Abstract A laminated material made up of densified layers of flexible material such as films or fabrics. The flexible layers are stitched together with reinforcing filaments and then densified under heat and pressure to form a compressed rigid laminate which is suitable as a backing for personnel armor.
Inventors
- 👤 H Lawler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:11
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B5/00; B32B5/02; B32B5/024; B32B5/06; B32B5/22; B32B5/24; B32B5/26; F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0471; F41H5/0485; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2309/00; B32B2309/02; B32B2309/022; B32B2323/00; B32B2323/10; B32B2571/00; B32B2571/02; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
42 words
Personnel armor comprising a high strength projectile resistant material and a flexible laminated material bonded to said projectile resistant material, said laminated material comprising a plurality of densified layers of flexible polymeric material and a heat shrunk filament stitching said layers together.
Claim 2
Dependent Claim
42 words
Personnel armor comprising a high strength projectile resistant material and a flexible laminated material bonded to said projectile resistant material, said laminated material comprising a plurality of densified layers of flexible polymeric material and a heat shrunk filament stitching said layers together.
Claim 3
Dependent Claim
15 words
Personnel armor according to claim 1 in which the said flexible polymeric material is polypropylene.
Claim 4
Independent Claim
73 words
A method for making personnel armor which comprises: a. forming a laminate from at least two layers of fabric woven from polypropylene filaments; b. stitching the fabric layers together with a heat shrinkable filament; c. densifying the laminate and shrinking the filament by applying heat and pressure; d. shaping the densified laminate to fit a contoured piece of armor facing; and e. bonding the shaped laminate to the back of the armor facing.
Claim 5
Independent Claim
73 words
A method for making personnel armor which comprises: a. forming a laminate from at least two layers of fabric woven from polypropylene filaments; b. stitching the fabric layers together with a heat shrinkable filament; c. densifying the laminate and shrinking the filament by applying heat and pressure; d. shaping the densified laminate to fit a contoured piece of armor facing; and e. bonding the shaped laminate to the back of the armor facing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |