US3718954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a nonwoven reinforcement structure
Assignee: Owens Corning
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Filing: 1970-12-24
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Granted: 1973-03-06
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Expires: 1990-12-24
Abstract
Abstract A nonwoven structure and method of making it where the structure includes short lengths of linear material such as glass strand united by nonadhesive means into a coherent body.
Inventors
- 👤 T Philipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:45
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/52; B32B5/02; B32B5/022; B32B5/06; B32B2262/00; B32B2262/10; B32B2262/101
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
The method of producing a mat for reinforcing resinous material to be combined therewith comprising: advancing glass strands to a cutting zone; cutting the glass strands to a desired length; accumulating the cut glass strands of desired length in promiscuous disposition as a layer on an advancing surface; and interengaging the layer with thread at spaced regions located sufficiently close to unite the glass strands together in interdependent relationship into a flexible coherent body having a porosity sufficient to permit flowable resinuous material to be combined therewith to flow throughout the body.
Claim 2
Independent Claim
92 words
The method of producing a mat for reinforcing resinous material to be combined therewith comprising: advancing glass strands to a cutting zone; cutting the glass strands to a desired length; accumulating the cut glass strands of desired length in promiscuous disposition as a layer on an advancing surface; and interengaging the layer with thread at spaced regions located sufficiently close to unite the glass strands together in interdependent relationship into a flexible coherent body having a porosity sufficient to permit flowable resinuous material to be combined therewith to flow throughout the body.
Claim 3
Dependent Claim
20 words
The method recited in claim 1 wherein the glass strands are cut into lengths of from 1 to 24 inches.
Claim 4
Dependent Claim
23 words
The method recited in claim 1 further including the step of forming holes in the layer for improving absorption of flowable resinous material.
Claim 5
Independent Claim
91 words
The method of producing a mat for reinforcing resinous material to be combined therewith comprising: depositing discontinuous glass strands in promiscuous disposition as a layer at a zone on an advancing surface; depositing at a second zone, spaced from the first, discontinuous glass strands in promiscuous disposition as a second layer on the advancing layer; and sewing the layers at spaced regions located sufficiently close to unite the discontinuous glass strands together into a flexible coherent body having a permeability sufficient to permit flowable resinous material to spread throughout the body.
Claim 6
Independent Claim
91 words
The method of producing a mat for reinforcing resinous material to be combined therewith comprising: depositing discontinuous glass strands in promiscuous disposition as a layer at a zone on an advancing surface; depositing at a second zone, spaced from the first, discontinuous glass strands in promiscuous disposition as a second layer on the advancing layer; and sewing the layers at spaced regions located sufficiently close to unite the discontinuous glass strands together into a flexible coherent body having a permeability sufficient to permit flowable resinous material to spread throughout the body.
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 |