US3955856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-friction device
Assignee: QUAMCO Inc A DE CORP
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Filing: 1975-03-05
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Granted: 1976-05-11
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Expires: 1995-03-05
Abstract
Abstract An anti-friction device for use under hostile conditions such as high temperature or nuclear radiation environments or for use under sustained impact loading. The device comprises two components: first, a fibrous, non-metallic substrate which is capable of withstanding hostile conditions such as high temperatures, high nuclear radiation or sustained impact loading, and second, a lubricating medium carried by and substantially permeating the entire fibrous substrate. When the device is disposed between two members, the members will be capable of moving relative to one another due to the relatively low coefficient of sliding or rolling friction at a surface between the members.
Inventors
- 👤 Andrew J. Wayson
- 👤 James Moy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:24
CPC Classifications
G; G21; G21C; G21C13/00; G21C13/02; G21C13/024; E; E04; E04B; E04B1/00; E04B1/36; F; F16; F16C; F16C29/00; F16C29/02; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C33/28; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
65 words
An anti-friction device adapted to be disposed between two load bearing members comprising; a fibrous, non-metallic substrate, fabricated from a material capable of withstanding hostile conditions, a lubricating medium carried by and permeating substantially throughout said entire fibrous substrate whereby when said device is disposed between two members said members are adapted to move relative to one another thereby relieving stresses induced in said members.
Claim 2
Dependent Claim
65 words
An anti-friction device adapted to be disposed between two load bearing members comprising; a fibrous, non-metallic substrate, fabricated from a material capable of withstanding hostile conditions, a lubricating medium carried by and permeating substantially throughout said entire fibrous substrate whereby when said device is disposed between two members said members are adapted to move relative to one another thereby relieving stresses induced in said members.
Claim 3
Dependent Claim
27 words
The anti-friction device of claim 1 wherein said substrate is fabricated from a material which absorbs said lubricating medium, thereby entrapping said lubricating medium entrapping said substrate.
Claim 4
Dependent Claim
22 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from a material adapted to withstand temperatures greater than 425°F.
Claim 5
Dependent Claim
23 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from a material adapted to withstand high levels of nuclear radiation.
Claim 6
Dependent Claim
21 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from a material adapted to withstand sustained impact loads.
Claim 7
Dependent Claim
17 words
The anti-friction device of claim 1 wherein said fibrous substrate is a woven material forming a mat.
Claim 8
Dependent Claim
21 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from an organic polymeric material comprised of an aramid.
Claim 9
Dependent Claim
22 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from an organic polymeric material comprised of an aromatic polyamide.
Claim 10
Dependent Claim
20 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from an organic polymeric material comprised of "KEVLAR".
Claim 11
Dependent Claim
22 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from an organic polymeric material comprised of "KEVLAR" 29 DP-01.
Claim 12
Dependent Claim
14 words
The anti-friction device of claim 1 wherein said lubricating medium is a solid suspension.
Claim 13
Dependent Claim
13 words
The anti-friction device of claim 1 wherein said lubricating medium is a liquid.
Claim 14
Dependent Claim
28 words
The anti-friction device of claim 1 wherein said lubricating medium is comprised of a material selected from the group consisting of graphite, silicon, greases, "Teflon" and molybdenum disulfide.
Claim 15
Dependent Claim
44 words
The anti-friction device of claim 1 wherein said fibrous substrate is fabricated from an organic polymeric material comprised of "KEVLAR" 29 DP-01 and said lubricating medium is comprised of a material selected from the group consisting of graphite, silicon, greases, "Teflon" and molybdenum disulfide.
Claim 16
Dependent Claim
26 words
The device of claim 1 wherein one of said members is a plate and said fibrous substrate is adapted to be rigidly connected to said plate.
Claim 17
Dependent Claim
71 words
The device of claim 15 wherein said plate has raised portions provided with raised areas and lower portions provided with lower areas adjacent said raised areas whereby when a load is applied to said device by said second member, said substrate will be anchored against lateral movement on said plate by coaction of said raised portions and those parts of said substrate that are below the level of said raised areas.
Claim 18
Dependent Claim
15 words
The device of claim 15 wherein said rigid connection is by means of an adhesive.
Claim 19
Dependent Claim
12 words
The device of claim 17 wherein said adhesive is an epoxy resin.
Claim 20
Dependent Claim
18 words
The device of claim 15 wherein one of said members is cast around one surface of said substrate.
Claim 21
Dependent Claim
90 words
The device of claim 15 wherein said plate has a plurality of recesses for the receipt of a plurality of solid plugs of lubricating material, said plugs being dimensioned to protrude above the surface of said plate whereby when a load is applied to said device by said second member, said substrate will be anchored against lateral movement on said plate by coaction of said substrate and said plugs, and whereby said device is provided with a source of lubricant in addition to the lubricating medium carried by said substrate.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |