Patent US4623595A successfully refreshed from Google Patents.
US4623595A
Expired / Lapsed
US
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Sliding member and process for producing the same
Assignee: Taiho Kogyo Co Ltd
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Filing: 1983-02-03
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Granted: 1986-11-18
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Expires: 2003-02-03
Abstract
Abstract The present invention aims to provide a sliding member: to be operated under a high load and high sliding speed; having high impact resistance and high break-in property; to be highly resistant and stable under boundary lubricating conditions, and; to be engaged with the swash plate made of iron or aluminum in a swash plate type compressor. The sliding member of the present invention comprises: a base comprising an iron-based alloy; and a bearing layer, consolidated with the base by fusion and formed by applying on said base a powder coating having a thickness of not more than 0.5 mm, and then baking said coating, said powder consisting of an iron family element and an additive component which includes from 3 to 30% by weight of boron.
Inventors
- 👤 Kenichiro Futamura
- 👤 Eiji Asada
- 👤 Tatsuhiko Fukuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:35
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; F05; F05C; F05C2253/00; F05C2253/12; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
A composite sliding member comprising: a base comprising an iron-based alloy; and a bearing layer having a nonporous structure, consolidated with said base by fusion and formed by applying on said base a powder coating having a thickness of not more than 0.5 mm and then baking said powder coating, comprising at least one iron family element comprised of at least one third iron by weight and an additive component including boron in an amount of from 3% to 30% by weight based on said powder coating, at least temporarily, during said baking to a temperature exceeding the solidus of said powder, thereby essentially converting the applied powder to a liquid phase, and fusion-bonding said applied mixture to said base.
Claim 2
Dependent Claim
120 words
A composite sliding member comprising: a base comprising an iron-based alloy; and a bearing layer having a nonporous structure, consolidated with said base by fusion and formed by applying on said base a powder coating having a thickness of not more than 0.5 mm and then baking said powder coating, comprising at least one iron family element comprised of at least one third iron by weight and an additive component including boron in an amount of from 3% to 30% by weight based on said powder coating, at least temporarily, during said baking to a temperature exceeding the solidus of said powder, thereby essentially converting the applied powder to a liquid phase, and fusion-bonding said applied mixture to said base.
Claim 3
Dependent Claim
17 words
A composite sliding member according to claim 1, wherein the boron content is from 15% to 25%.
Claim 4
Dependent Claim
21 words
A composite sliding member according to claim 1, wherein the thickness of the powder coating is from 0.1 to 0.5 mm.
Claim 5
Dependent Claim
30 words
A composite sliding member according to claim 1, wherein the balance of said iron family element is at least one element selected from the group consisting of nickel and cobalt.
Claim 6
Dependent Claim
30 words
A composite sliding member according to claim 1, wherein said additive component further includes molybdenum in an amount of from 0.1% to 10% by weight based on said powder coating.
Claim 7
Dependent Claim
141 words
A process for producing a composite sliding member comprised of a base comprising an iron-based alloy layer and a bearing layer, said process comprising the steps of: preparing a powder mixture comprising at least one iron family element comprised of at least one third iron by weight and an additive component including boron in an amount of from 3% to 30% by weight based on said powder; mixing said powder with a binder; applying said binder and said powder mixture as a coating on said base to a thickness of not more than 0.5 mm; and baking the applied mixture on said base, said coating being heated, at least temporarily, during said baking to a temperature exceeding the solidus of said powder mixture, thereby essentially converting the applied mixture to a liquid phase, and fusion-bonding said applied mixture to said base.
Claim 8
Dependent Claim
141 words
A process for producing a composite sliding member comprised of a base comprising an iron-based alloy layer and a bearing layer, said process comprising the steps of: preparing a powder mixture comprising at least one iron family element comprised of at least one third iron by weight and an additive component including boron in an amount of from 3% to 30% by weight based on said powder; mixing said powder with a binder; applying said binder and said powder mixture as a coating on said base to a thickness of not more than 0.5 mm; and baking the applied mixture on said base, said coating being heated, at least temporarily, during said baking to a temperature exceeding the solidus of said powder mixture, thereby essentially converting the applied mixture to a liquid phase, and fusion-bonding said applied mixture to said base.
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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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |