US3594049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing liner
Assignee: Sargent Industries Inc
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Filing: 1969-06-19
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Granted: 1971-07-20
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Expires: 1989-06-19
Abstract
Abstract A bearing liner which includes a backing member and a mixture of an adhesive and powdered low-friction material. The backing member has a roughened, irregular or porous surface. The adhesive and low-friction material are disposed in a thin layer only a few mils thick so that the particles of the low-friction material are mechanically supported in a fixed position within the pores of the backing member. This fixed positioning of the particles is facilitated by the chemical bonding provided by the adhesive. The bearing liner is disposed with the backing member supported by a bearing member.
Inventors
- 👤 Peter H Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:45
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49655; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631; Y10T403/32737; Y10T403/32778; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/26
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
177 words
A bearing liner for use between first and second relatively movable members comprising: a backing member, said backing member having first and second generally oppositely directed faces, said first face having an irregular surface defined by peaks; a low-friction layer including a plurality of particles providing a low friction and a binding agent with the particles being dispersed in the binding agent, said binding agent holding said particles in a cohesive layer to one face of the backing layer, said low-friction layer extending a particular distance above the peaks of the irregular surface of the backing member, said particles being present in sufficient quantity to give the low-friction layer a low coefficient of friction suitable for use as a bearing liner, said particles being of sufficiently small size to be mechanically bonded in the irregular surface of the backing member, the low-friction layer being at very small thickness, and an adhesive only on said second face for bonding the backing member and said low-friction layer to said second member with the low-friction layer confronting said first member.
Claim 2
Dependent Claim
177 words
A bearing liner for use between first and second relatively movable members comprising: a backing member, said backing member having first and second generally oppositely directed faces, said first face having an irregular surface defined by peaks; a low-friction layer including a plurality of particles providing a low friction and a binding agent with the particles being dispersed in the binding agent, said binding agent holding said particles in a cohesive layer to one face of the backing layer, said low-friction layer extending a particular distance above the peaks of the irregular surface of the backing member, said particles being present in sufficient quantity to give the low-friction layer a low coefficient of friction suitable for use as a bearing liner, said particles being of sufficiently small size to be mechanically bonded in the irregular surface of the backing member, the low-friction layer being at very small thickness, and an adhesive only on said second face for bonding the backing member and said low-friction layer to said second member with the low-friction layer confronting said first member.
Claim 3
Dependent Claim
29 words
A bearing liner as defined in claim 1 wherein the thickness of said low-friction layer above said backing layer is sufficiently small to minimize initial wear of said layer.
Claim 4
Dependent Claim
41 words
A bearing liner as defined in claim 1 wherein the relative amount of said low-friction particles in said low-friction layer is less than the relative amount of said binding agent in said low-friction layer to minimize subsequent wear of said layer.
Claim 5
Dependent Claim
39 words
A bearing liner as defined in claim 1 wherein the thickness of said low-friction layer above said irregular surface of said backing member as measured from the peaks of said irregular surface is no more than about 0.0035 inch.
Claim 6
Dependent Claim
44 words
A bearing liner as defined in claim 1 wherein the backing member includes a plurality of strands defining pores between said strands, the size of said particles being sufficiently small to be mechanically locked between adjacent fibers of at least some of said strands.
Claim 7
Dependent Claim
14 words
A bearing liner as defined in claim 1 wherein the particles are a polytetrafluoroethylene.
Claim 8
Dependent Claim
52 words
A bearing liner as defined in claim 1 wherein the thickness of said low-friction layer above said irregular surface of said backing member as measured from the peaks of said irregular surface is no more than about 0.0035 inches and wherein the particles have a size no greater than approximAtely 5 microns.
Claim 9
Dependent Claim
28 words
A bearing liner as defined in claim 7 wherein the particles are a polytetrafluoroethylene and constitute approximately 20 percent to 35 percent by weight of the low-friction layer.
Claim 10
Dependent Claim
162 words
A bearing liner for use between first and second relatively movable members comprising: a low-friction layer having a first surface with a low coefficient of friction and having a first surface for slidably engaging the first member; a backing member supporting the low-friction layer, said backing member having first and second generally oppositely directed faces, said first face having an irregular surface; said low-friction layer being formed from a mixture of particles of a low-friction material and an adhesive with the particles being chemically bonded to the adhesive and mechanically bonded in the irregular surface of the backing member; said low-friction layer having a thickness outwardly of the irregular surface of said first face of said backing member of no greater than about 0.0035 inch to thereby facilitate the minimizing of initial wear of the bearing liner upon a relative movement between the first and second members; and adhesive means supporting the second face of the backing member to the second member.
Claim 11
Dependent Claim
162 words
A bearing liner for use between first and second relatively movable members comprising: a low-friction layer having a first surface with a low coefficient of friction and having a first surface for slidably engaging the first member; a backing member supporting the low-friction layer, said backing member having first and second generally oppositely directed faces, said first face having an irregular surface; said low-friction layer being formed from a mixture of particles of a low-friction material and an adhesive with the particles being chemically bonded to the adhesive and mechanically bonded in the irregular surface of the backing member; said low-friction layer having a thickness outwardly of the irregular surface of said first face of said backing member of no greater than about 0.0035 inch to thereby facilitate the minimizing of initial wear of the bearing liner upon a relative movement between the first and second members; and adhesive means supporting the second face of the backing member to the second member.
Claim 12
Dependent Claim
35 words
A bearing liner as defined in claim 9 wherein said thickness of said low-friction layer outwardly of the irregular surface of said first face of said backing member is no less than about 0.0025 inch.
Claim 13
Dependent Claim
47 words
A bearing liner as defined in claim 9 wherein said thickness of said low-friction layer outwardly of the irregular surface of said first face of said backing member is approximately 0.003 inch and said particles are a polytetrafluoroethylene with a size no greater than about 5 microns.
Claim 14
Dependent Claim
52 words
A bearing liner as defined in claim 9 wherein said low-friction layer includes fluorocarbon powder mixed with an adhesive and chemically bound by the adhesive and wherein the backing member constitutes a fabric with an adhesive with strands defining pores of proper size to mechanically bond the fluorocarbon powder in the pores.
Claim 15
Dependent Claim
46 words
A bearing liner as defined in claim 12 wherein the fluorocarbon is polytetrafluoroethylene and makes up from about 20 percent to about 35 percent by weight of the low-friction layer and the particles of the powder are of a size no greater than about 5 microns.
Claim 16
Dependent Claim
165 words
A bearing liner bondable to a support and providing a bearing from a member movable past the support, comprising: a woven fabric backing member including a plurality of strands defining pores, said backing member having first and second faces; a low-friction layer including a low-friction powder intimately mixed with an adhesive, said adhesive chemically binding the particles of the powder in the mixture and bonding the low-friction layer to said first face, the powder being present in the layer in an amount less by weight than the adhesive and in an amount sufficient to give the low-friction layer a low coefficient of friction, the powder being of sufficiently small size to be mechanically locked in the pores of the fabric backing member, the layer being provided with a very thin dimension above the first face to minimize initial wear of the layer; and an adhesive on the second face of said backing member for bonding said backing member to the support for the bearing liner.
Claim 17
Dependent Claim
165 words
A bearing liner bondable to a support and providing a bearing from a member movable past the support, comprising: a woven fabric backing member including a plurality of strands defining pores, said backing member having first and second faces; a low-friction layer including a low-friction powder intimately mixed with an adhesive, said adhesive chemically binding the particles of the powder in the mixture and bonding the low-friction layer to said first face, the powder being present in the layer in an amount less by weight than the adhesive and in an amount sufficient to give the low-friction layer a low coefficient of friction, the powder being of sufficiently small size to be mechanically locked in the pores of the fabric backing member, the layer being provided with a very thin dimension above the first face to minimize initial wear of the layer; and an adhesive on the second face of said backing member for bonding said backing member to the support for the bearing liner.
Claim 18
Dependent Claim
42 words
a bearing liner as defined in claim 14 wherein the powder forms about 20 to 35 percent by weight of the low-friction layer to minimize initial and subsequent wear of the bearing liner upon repetitive movements of the member past the support.
Claim 19
Dependent Claim
27 words
A bearing liner as defined in claim 14 wherein the size of the particles of powder are no greater than about 5 microns and constitute a fluorocarbon.
Claim 20
Dependent Claim
29 words
A bearing liner as defined in claim 14 wherein the thickness of the low-friction layer above the first face of the strands is no greater than approximately 0.0035 inches.
Claim 21
Dependent Claim
31 words
A bearing liner as defined in claim 14 wherein said backing member includes a woven fabric of synthetic strands with pores of proper size to mechanically lock the particles of powder.
Claim 22
Dependent Claim
26 words
A bearing liner as defined in claim 14 wherein the powder is a polytetrafluoroethylene and makes up approximately 25 percent by weight of the low-friction layer.
Claim 23
Dependent Claim
44 words
A bearing liner as defined in claim 19 wherein the particle size of the powder does not substantially exceed 5 microns and the backing member includes a woven fabric of synthetic strands with pores of proper size to mechanically lock the particles of powder.
Claim 24
Dependent Claim
25 words
A bearing liner as defined in claim 20 wherein the thickness of the low-friction layer above the first surface does not exceed about 0.0035 inches.
Claim 25
Dependent Claim
167 words
A bearing liner bondable to a support and providing a bearing from a member movable past the support comprising: a backing member having first and second generally oppositely directed faces and having irregular surfaces on at least one of the faces with the irregular surfaces having peaks; a low-friction layer including a plurality of particles providing a low-friction and a binding agent with the particles being dispersed in the binding agent. Said binding holding said particles in a cohesive layer to the irregular surface of the backing member, said particles being present in sufficient quantity to give the low friction layer a low coefficient of friction suitable for use as a bearing liner, said layer having a thickness above the peaks of the irregular surfaces of the backing member not greater than approximately 0.0035 inches; and an adhesive on the other face of the backing member for bonding the backing member to the second relatively movable member with the low-friction layer confronting the first relatively movable member.
Claim 26
Dependent Claim
167 words
A bearing liner bondable to a support and providing a bearing from a member movable past the support comprising: a backing member having first and second generally oppositely directed faces and having irregular surfaces on at least one of the faces with the irregular surfaces having peaks; a low-friction layer including a plurality of particles providing a low-friction and a binding agent with the particles being dispersed in the binding agent. Said binding holding said particles in a cohesive layer to the irregular surface of the backing member, said particles being present in sufficient quantity to give the low friction layer a low coefficient of friction suitable for use as a bearing liner, said layer having a thickness above the peaks of the irregular surfaces of the backing member not greater than approximately 0.0035 inches; and an adhesive on the other face of the backing member for bonding the backing member to the second relatively movable member with the low-friction layer confronting the first relatively movable member.
Claim 27
Dependent Claim
27 words
A bearing liner as specified in claim 22 wherein the particles are a fluorocarbon and constitute approximately 25 percent to 35 percent by weight of the dispersion.
Claim 28
Dependent Claim
19 words
The bearing liner specified in claim 23 wherein the particles have a size not greater than approximately 5 microns.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |