Patent US4767677A successfully refreshed from Google Patents.
US4767677A
Expired / Lapsed
US
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Multi-layer cylindrical bearing
Assignee: NDC Co Ltd
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Filing: 1987-09-16
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Granted: 1988-08-30
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Expires: 2007-09-16
Abstract
Abstract A multi-layer cylindrical bearing comprises an outer, backing layer (1a) of stainless steel, an intermediate layer (1b) of porous copper alloy formed by sintering copper alloy, and an inner, bearing layer (1c) of synthetic resin formed by impregnating and curing the resin over said intermediate layer.
Inventors
- 👤 Yukio Kuwayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:20
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/32; B60S1/34; B22; B22F; B22F7/00; B22F7/002; B60S1/3425; B60S1/3445; B60S1/345; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C2326/00; F16C2326/01; F16C2326/09; Y; Y10; Y10S; Y10S384/00; Y10S384/90; Y10S384/912; Y10S384/913; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12993
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
53 words
A multi-layer cylindrical bearing comprising a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said bearing including a joint where two edges of said sheet abut.
Claim 2
Dependent Claim
53 words
A multi-layer cylindrical bearing comprising a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said bearing including a joint where two edges of said sheet abut.
Claim 3
Dependent Claim
16 words
The multi-layer bearing of claim 1 wherein one end of said cylinder has a circumferential flange.
Claim 4
Dependent Claim
75 words
A wiper comprising a wiper arm, a support arm, and a cylindrical bearing which rotatably connects said wiper arm to said support arm, said cylindrical bearing comprising a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said bearing including a joint where two edges of said sheet abut.
Claim 5
Dependent Claim
75 words
A wiper comprising a wiper arm, a support arm, and a cylindrical bearing which rotatably connects said wiper arm to said support arm, said cylindrical bearing comprising a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said bearing including a joint where two edges of said sheet abut.
Claim 6
Dependent Claim
165 words
A wiper comprising: a wiper arm, a support arm having a base which is U-shaped in cross-section, a cylindrical bearing which rotatably connects said base of said wiper arm to said support arm, said cylindrical bearing comprising a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said bearing including a joint where two edges of said sheet abut, said outer backing layer of said bearing being pressure-inserted into said support arm, said wiper arm being free to swing across the direction of swing of said support arm, a wiper blade being attached to said wiper arm, a spring extending to said support arm for biasing said wiper arm in one direction extending to said support arm and a shaft which is rotatably inserted in said bearing, said shaft being secured by bridging said base of said wiper arm.
Claim 7
Dependent Claim
165 words
A wiper comprising: a wiper arm, a support arm having a base which is U-shaped in cross-section, a cylindrical bearing which rotatably connects said base of said wiper arm to said support arm, said cylindrical bearing comprising a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said bearing including a joint where two edges of said sheet abut, said outer backing layer of said bearing being pressure-inserted into said support arm, said wiper arm being free to swing across the direction of swing of said support arm, a wiper blade being attached to said wiper arm, a spring extending to said support arm for biasing said wiper arm in one direction extending to said support arm and a shaft which is rotatably inserted in said bearing, said shaft being secured by bridging said base of said wiper arm.
Claim 8
Dependent Claim
187 words
A carburetor comprising: a carburetor body including an intake valve, an angle-shaped action link, a support pin fixed to said carburetor body, said support pin being inserted in a hole in one end of said action link, thereby rotatably supporting said action link, a connecting link, a first connecting pin attached to said connecting link, a first cylindrical bearing, said first cylindrical bearing being inserted through a hole in the other end of said action link so that said first cylindrical bearing rotatably engages said first connecting pin, a lever attached to said intake valve, a second connecting pin attached to said connecting link, a second cylindrical bearing, said second cylindrical bearing being inserted through a hole in said lever so that said second cylindrical bearing rotably engages said second connecting pin, said first cylindrical bearing comprising a cylindrical multi-layer sheet comprising: an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said first cylindrical bearing including a joint where two edges of said sheet abut.
Claim 9
Dependent Claim
187 words
A carburetor comprising: a carburetor body including an intake valve, an angle-shaped action link, a support pin fixed to said carburetor body, said support pin being inserted in a hole in one end of said action link, thereby rotatably supporting said action link, a connecting link, a first connecting pin attached to said connecting link, a first cylindrical bearing, said first cylindrical bearing being inserted through a hole in the other end of said action link so that said first cylindrical bearing rotatably engages said first connecting pin, a lever attached to said intake valve, a second connecting pin attached to said connecting link, a second cylindrical bearing, said second cylindrical bearing being inserted through a hole in said lever so that said second cylindrical bearing rotably engages said second connecting pin, said first cylindrical bearing comprising a cylindrical multi-layer sheet comprising: an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said first cylindrical bearing including a joint where two edges of said sheet abut.
Claim 10
Dependent Claim
186 words
A carburetor comprising: a carburetor body, an angle-shaped action link, a support pin fixed to said carburetor body, said support pin being inserted into a hole at one end of side action link, thereby rotatably supporting said action link, a connecting link, a first connecting pin attached to said connecting link, a first cylindrical bearing, said first cylindrical bearing being inserted through a hole in the other end of said action link so that said first cylindrical bearing rotatably engages said first connecting pin, a lever attached to the intake valve of said carburetor body, a second connecting pin attached to said connecting link, a second cylindrical bearing, said second cylindrical bearing being inserted through a hole in said lever so that said second cylindrical bearing rotatably engages said second connecting pin, said second cylindrical bearing comprising a cylindrical multi-layer sheet comprising: an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said second cylindrical bearing including a joint where two edges of said sheet abut.
Claim 11
Dependent Claim
186 words
A carburetor comprising: a carburetor body, an angle-shaped action link, a support pin fixed to said carburetor body, said support pin being inserted into a hole at one end of side action link, thereby rotatably supporting said action link, a connecting link, a first connecting pin attached to said connecting link, a first cylindrical bearing, said first cylindrical bearing being inserted through a hole in the other end of said action link so that said first cylindrical bearing rotatably engages said first connecting pin, a lever attached to the intake valve of said carburetor body, a second connecting pin attached to said connecting link, a second cylindrical bearing, said second cylindrical bearing being inserted through a hole in said lever so that said second cylindrical bearing rotatably engages said second connecting pin, said second cylindrical bearing comprising a cylindrical multi-layer sheet comprising: an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said second cylindrical bearing including a joint where two edges of said sheet abut.
Claim 12
Dependent Claim
61 words
The carburetor of claim 5, wherein said first cylindrical bearing comprises: a cylindrical multi-layer sheet comprising an outer backing layer of stainless steel, an intermediate layer of porous copper alloy, and an inner bearing layer of synthetic resin, said synthetic resin being impregnated into said intermediate layer, said first cylindrical bearing including a joint where two edges of said sheet abut.
References Cited (Backward Citations)
US4666787A
Cited
US4582368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |