US3657061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced carbon and graphite bodies
Assignee: Stemcor Corp
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Filing: 1966-12-13
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Granted: 1972-04-18
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Expires: 1986-12-13
Abstract
Abstract A high strength carbon or graphite body formed from a carbon or graphite fiber composite shape having fibers running in three dimensions and a carbon or graphite matrix. The fiber composite is formed by needling layers of carbon or graphite fibers to position some of the fibers of each layer into a running direction substantially perpendicular to the running direction of the layers.
Inventors
- 👤 Walter H Carlson
- 👤 Leo C Ehrenreich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:30
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/24; B29C70/08; B29C70/081; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; D; D04; D04H; D04H5/00; D04H5/02; B29K; B29K2707/00; B29K2707/04; Y; Y10; Y10T; Y10T428/00; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3528
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A laminated reinforced article compRising: a plurality of overlying layers of intralaminar reinforcing woven fabric formed from fibers selected from the group consisting of carbon and graphite fibers: b. a plurality of interlaminar reinforcing fibers selected from the group consisting of carbon and graphite fibers, having a running direction at an angle to the running direction of the overlying layers of intralaminar reinforcing fabric and disposed in adjacent layers of intralaminar reinforcing fabric whereby to provide interlaminar reinforcement; and c. a binder selected from the group consisting of carbon and graphite.
Claim 2
Dependent Claim
46 words
The laminated reinforced article of claim 2 wherein the interlaminar reinforcing fibers having a running direction at an angle to the running direction of the overlying layers of intralaminar reinforcing fabric are substantially perpendicular to the running direction of the overlying layers of intralaminar reinforcing fabric.
Claim 3
Dependent Claim
61 words
The laminated reinforced article of claim 3 wherein the interlaminar reinforcing fibers substantially perpendicular to the running direction of the overlying layers of intralaminar reinforcing fabric comprise a portion of the fibers of the overlying layers of intralaminar reinforcing fabric, the substantially perpendicular fibers being disposed in at least the adjacent underlying layer of intralaminar reinforcing fabric to provide interlaminar reinforcement.
Claim 4
Dependent Claim
65 words
The laminated reinforced article of claim 3 wherein the interlaminar reinforcing fibers substantially perpendicular to the running direction of the overlying layers of intralaminar reinforcing fabric comprise chopped fibers which are other than fibers of the overlying layers of intralaminar reinforcing fabric, the substantially perpendicular chopped fibers being deposited within said article and disposed within adjacent layers of intralaminar reinforcing fabric to provide interlaminar reinforcement.
Claim 5
Dependent Claim
157 words
A laminated reinforced article comprising a plurality of overlying layers of intralaminar reinforcing woven fabric formed from fibers selected from the group consisting of carbon and graphite fibers and a binder selected from the group consisting of carbon and graphite, wherein the improvement comprises a plurality of interlaminar reinforcing fibers selected from the group consisting of carbon and graphite fibers having a running direction substantially perpendicular to the running direction of the overlying layers of intralaminar reinforcing fabric, the substantially perpendicular interlaminar reinforcing fibers comprising either (a) a portion of the fibers of the overlying layers of intralaminar reinforcing fabric which portion of fibers is disposed in at least the adjacent underlying layer of intralaminar reinforcing fabric to provide interlaminar reinforcement, or (b) chopped fibers other than fibers of the overlying layers of intralaminar reinforcing fabric which chopped fibers are deposited within said article and disposed within adjacent layers of intralaminar reinforcing fabric to provide interlaminar reinforcement.
References Cited (Backward Citations)
US3462289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |