US5127783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon/carbon composite fasteners
Assignee: Goodrich Corp
•
Filing: 1989-05-25
•
Granted: 1992-07-07
•
Expires: 2009-05-25
Abstract
Abstract A carbon and/or ceramic fiber reinforced carbon and/or ceramic matrix composite threaded member including a core, a fiber containing thread-defining element bonded to the exterior of the core and a reinforcing fabric layer securing the thread-defining element to the core. The thread-defining element may be an integral part of a tubular braided reinforcing fabric or applied to the core prior to application of a reinforcing fabric layer. Externally and internally threaded members and methods for their manufacture are described.
Inventors
- 👤 Sharad R. Moghe
- 👤 Mark J. Purdy
- 👤 Wei-Teh Shih
- 👤 James A. Tallon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:53
CPC Classifications
D; D04; D04C; D04C1/00; D04C1/06; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; B29C70/222; B29D; B29D1/00; B29D1/005; B32; B32B; B32B18/00; C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/111; C04B35/117; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C04B35/622; C04B35/626; C04B35/628; C04B35/62844; C04B35/62857; C04B35/6286; C04B35/62863; C04B35/71; C04B35/78; C04B35/80; C04B35/83; D04B; D04B9/00; D04B9/42; D04B9/44; D04C3/00; D04C3/48; D07; D07B; D07B5/00; D07B5/005; F; F16; F16B; F16B33/00; F16B33/006; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/0827; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/522; C04B2235/5224; C04B2235/524; C04B2235/5244; C04B2235/5248; C04B2235/5252; C04B2235/60; C04B2235/614; C04B2235/70; C04B2235/94; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/36; C04B2237/365; C04B2237/38; C04B2237/385; C04B2237/50; C04B2237/76; C04B2237/765; C04B2237/84; D07B2201/00; D07B2201/20; D07B2201/2083; D07B2201/2084; D07B2201/2086; D07B2201/209; D10; D10B; D10B2403/00; D10B2403/02; D10B2505/00; D10B2505/02; F16B2200/00; F16B2200/85; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/904; Y10S411/908
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
97 words
An externally threaded composite member comprising an elongate core formed from at least one of carbon and ceramic material, a fiber containing thread-defining element formed from at least one of carbon and ceramic fibers bonded by one of carbonaceous and ceramic material to the exterior surface of the core, said thread-defining element helically extending around and along the lengthwise direction of the core and projecting radially outwardly of the core, and a reinforcing fabric layer formed from at least one of carbon and ceramic fibers bound together by pyrolytic material securing said thread-defining element to the core.
Claim 2
Dependent Claim
97 words
An externally threaded composite member comprising an elongate core formed from at least one of carbon and ceramic material, a fiber containing thread-defining element formed from at least one of carbon and ceramic fibers bonded by one of carbonaceous and ceramic material to the exterior surface of the core, said thread-defining element helically extending around and along the lengthwise direction of the core and projecting radially outwardly of the core, and a reinforcing fabric layer formed from at least one of carbon and ceramic fibers bound together by pyrolytic material securing said thread-defining element to the core.
Claim 3
Dependent Claim
21 words
The threaded member of claim 1, wherein the core is a carbon fiber reinforced carbon matrix rod of circular cross-sectional configuration.
Claim 4
Dependent Claim
35 words
The threaded member of claim 1, wherein the core comprises a plurality of substantially parallel continuous carbon fibers extending in the longitudinal direction of the core and bound to one another by a carbonaceous matrix.
Claim 5
Dependent Claim
52 words
The threaded member of claim 1, wherein the thread-defining element is an integral part of a tubular braided layer formed of at least one thread-defining element and a plurality of non-thread-defining elements, said thread-defining element having a greater radial projection relative to the core than the remainder of the non-thread-defining braiding elements.
Claim 6
Dependent Claim
25 words
The member of claim 4, wherein at least one of the core and tubular braid layer include continuous fibers selected from carbon and ceramic material.
Claim 7
Dependent Claim
26 words
The member of claim 5, wherein the pyrolytic material is selected from carbon, a metal carbide, boride and nitride, and a mixture of any of these.
Claim 8
Dependent Claim
20 words
The member of claim 4, wherein at least a portion of the non-thread-defining elements are flattened strips of fibrous material.
Claim 9
Dependent Claim
11 words
The threaded member of claim 1, wherein the core is hollow.
Claim 10
Dependent Claim
16 words
The threaded member of claim 1, wherein the thread-defining element comprises a D-shaped bundle of filaments.
Claim 11
Dependent Claim
20 words
The threaded member of claim 1, wherein the thread-defining element comprises one of a braided cord and a twisted cord.
Claim 12
Dependent Claim
25 words
The threaded member of claim 1, wherein the reinforcing fabric layer is stable against rotation under tension applied in the lengthwise direction of the core.
Claim 13
Dependent Claim
24 words
The threaded member of claim 1, wherein the thread-defining element is at a helix angle of between 50 and slightly less than 90 degrees.
Claim 14
Dependent Claim
16 words
The threaded member of claim 1, wherein the core includes one of carbon and ceramic fibers.
Claim 15
Dependent Claim
16 words
The threaded member of claim 1, wherein the core includes carbon fibers and a ceramic matrix.
Claim 16
Dependent Claim
17 words
The threaded member of claim 4, wherein the braided layer includes one of carbon and ceramic fibers.
Claim 17
Dependent Claim
22 words
The threaded member of claim 15, wherein the braided layer includes carbon fibers which are chemically treated to enhance resistance to oxidation.
Claim 18
Dependent Claim
12 words
The threaded member of claim 1, including fibers of differing chemical composition.
Claim 19
Dependent Claim
13 words
The threaded member of claim 1, wherein multiple helical thread-defining elements are present.
Claim 20
Dependent Claim
17 words
The threaded member of claim 1, wherein the thread-defining element is formed of twisted fibers of carbon.
Claim 21
Dependent Claim
20 words
The threaded member of claim 1, wherein the cross-sectional configuration of the core is polygonal having at least six sides.
Claim 22
Dependent Claim
15 words
The threaded member of claim 1, wherein the cross-sectional configuration of the core is oval.
Claim 23
Dependent Claim
18 words
The member of claim 1, wherein the thread is not machined or molded and has a rounded apex.
Claim 24
Dependent Claim
25 words
The member of claim 1, including carbon fibers and a carbon matrix at least one of which is chemically treated to enhance resistance to oxidation.
Claim 25
Dependent Claim
24 words
The member of claim 1, wherein the thread-defining element is formed of a tow of carbon fibers bonded by pyrolytic carbon to the core.
Claim 26
Dependent Claim
92 words
The externally threaded member of claim 1, comprising a thread-defining element helically extending around and along the lengthwise direction of the core and projecting radially outwardly of the core, and a reinforcing fabric layer enveloping conforming and secured to the outer surface of the combined core and threaded-defining element, the reinforcing fabric layer having the first portion of its fibers extending helically generally in the directional sense of the thread-defining element and the remaining portion of its fibers extending helically generally in a directional sense opposite to that of the thread-defining element.
Claim 27
Dependent Claim
25 words
The threaded member of claim 25, wherein the core includes carbon or ceramic fibers in a carbon or ceramic matrix rod of circular cross-sectional configuration.
Claim 28
Dependent Claim
36 words
The threaded member of claim 26, wherein the core comprises a plurality of substantially parallel continuous carbon or ceramic fibers extending in the longitudinal direction of the core bound to one another by a pyrolytic matrix.
Claim 29
Dependent Claim
18 words
The threaded member of claim 25, wherein the helical element contains one of fibrous carbon and ceramic reinforcement.
Claim 30
Dependent Claim
14 words
The threaded member of claim 28, wherein the helical element contains continuous fibrous reinforcement.
Claim 31
Dependent Claim
16 words
The threaded member of claim 25, wherein the helical element comprises a D-shaped bundle of fibers.
Claim 32
Dependent Claim
19 words
The threaded member of claim 25, wherein the helical element comprises one of a braided cord and twisted cord.
Claim 33
Dependent Claim
28 words
The threaded member of claim 25, wherein the helical element comprises short fibers extending in the direction of the helix embedded in one of carbon and ceramic matrices.
Claim 34
Dependent Claim
16 words
The threaded member of claim 25, wherein the reinforcing fabric layer comprises a tubular braided layer.
Claim 35
Dependent Claim
19 words
The threaded member of claim 25, wherein the reinforcing layer comprises one of a tubular knit and woven layer.
Claim 36
Dependent Claim
23 words
The threaded member of claim 25, wherein the core includes one of carbon and ceramic fibers chemically treated to enhance resistance to oxidation.
Claim 37
Dependent Claim
18 words
The threaded member of claim 25, wherein the reinforcing fabric layer includes one of carbon and ceramic fibers.
Claim 38
Dependent Claim
14 words
The threaded member of claim 25, wherein fibers of differing chemical composition are present.
References Cited (Backward Citations)
US2306516A
Cited
US2915110A
Cited
US3283050A
Cited
US3495494A
Cited
US3394527A
Cited
USRE28574E
Cited
US3579402A
Cited
US4265981A
Cited
US4326905A
Cited
US4389269A
Cited
US4478545A
Cited
US4522529A
Cited
US4478544A
Cited
US4623290A
Cited
US4717302A
Cited
US4581263A
Cited
US4620401A
Cited
US4687394A
Cited
US4687396A
Cited
US4687397A
Cited
US4687395A
Cited
US4687398A
Cited
US4659268A
Cited
US4863330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |