US4301213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel backing bearing blank with bonded ceramic layer, coating of polyarylene sulphide thereon and method of making
Assignee: Dana Inc
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Filing: 1979-11-06
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Granted: 1981-11-17
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Expires: 1999-11-06
Abstract
Abstract The present invention relates to bonding a coating of polyarylene sulphide, for example polyphenylene sulphide, to a steel backing by the use of a ceramic or other non-metallic inter-layer or bonding layer. In some cases the bonding layer comprises a layer of fine particles bonded to the backing followed by a layer of coarser particles to which the coating can be more effectively bonded. This results on a coated steel backing capable of being deformed without the coating becoming detached. Such a coated backing is suitable for use as a bearing material, a chemically resistant material or as cookware.
Inventors
- 👤 Glyndwr J. Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:09
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B05D5/00; B05D5/08; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; B05D2202/00; B05D2202/10; B05D2350/00; B05D2350/60; B05D2350/63; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/31504; Y10T428/31533
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
33 words
A steel backing having a coating of polyarylene sulphide wherein the coating is bonded to a ceramic bonding layer, comprising silicon oxide, boron oxide and sodium oxide, which is bonded to the backing.
Claim 2
Dependent Claim
33 words
A steel backing having a coating of polyarylene sulphide wherein the coating is bonded to a ceramic bonding layer, comprising silicon oxide, boron oxide and sodium oxide, which is bonded to the backing.
Claim 3
Dependent Claim
15 words
The coated steel backing according to claim 1, wherein the polyarylene sulphide is polyphenylene sulphide.
Claim 4
Dependent Claim
16 words
A bearing blank formed from a coated steel backing as claimed in claim 1 or 2.
Claim 5
Dependent Claim
19 words
The coated steel backing according to claim 1 or 2, wherein the bonding layer is sintered to the backing.
Claim 6
Dependent Claim
14 words
A bearing blank formed from a coated steel backing as claimed in claim 4.
Claim 7
Dependent Claim
44 words
The coated steel backing according to claim 4, wherein the bonding layer comprises fine particles of a diameter less than 10 -5 m bonded to the backing and coarse particles of a diameter of 5×10 -5 to 2×10 -4 m bonded to the coating.
Claim 8
Dependent Claim
14 words
A bearing blank formed from a coated steel backing as claimed in claim 6.
Claim 9
Independent Claim
35 words
A method of coating a steel backing comprising: bonding a ceramic bonding layer comprising silicon oxide, boron oxide and sodium oxide to the backing, and bonding a coating of polyarylene sulphide to the bonding layer.
Claim 10
Independent Claim
35 words
A method of coating a steel backing comprising: bonding a ceramic bonding layer comprising silicon oxide, boron oxide and sodium oxide to the backing, and bonding a coating of polyarylene sulphide to the bonding layer.
Claim 11
Dependent Claim
13 words
The method according to claim 8, wherein the polyarylene sulphide is polyphenylene sulphide.
Claim 12
Dependent Claim
49 words
The method according to claim 8, wherein the bonding layer is applied to the backing in two stages, a layer of fine particles of a diameter less than 10 -5 m being followed by a layer of coarse particles of a diameter of 5×10 -5 to 2×10 -5 m.
Claim 13
Dependent Claim
17 words
The method according to claim 8 or 10, wherein the bonding layer is sintered to the backing.
Claim 14
Dependent Claim
58 words
The method according to claim 10, wherein the fine particles used in the bonding layer comprise: 30 to 70% silicon oxide; 10 to 40% boron oxide; 5 to 15% sodium oxide; and up to 5% each of at least one member selected from the group consisting of cobalt oxide, nickel oxide, manganese oxide, aluminum oxide and calcium fluoride.
Claim 15
Dependent Claim
37 words
The method according to claim 10, wherein the coarse particles used in the bonding layer comprise: 20 to 70% silicon oxide; 5 to 15% boron oxide; 5 to 15% sodium oxide; and 5 to 15% zirconium oxide.
Claim 16
Dependent Claim
61 words
The method according to claim 13, wherein the coarse particles used in the bonding layer comprise: 20 to 70% silicon oxide; 5 to 15% boron oxide; 5 to 15% sodium oxide; 5 to 15% zirconium oxide; and 2 to 10% each of at least one member selected from the group consisting of nickel sulphide, chromium sulphide, selenium oxide and tellurium oxide.
Claim 17
Dependent Claim
22 words
A bearing blank formed from a coated steel backing prepared by the method of claim 8, 9, 10, 12, 13 or 14.
Claim 18
Dependent Claim
16 words
A bearing blank formed from a coated steel backing prepared by the method of claim 11.
References Cited (Backward Citations)
US3514319A
Cited
US3540896A
Cited
FR2103727A5
Cited
GB1356174A
Cited
AU427793B2
Cited
GB1475295A
Cited
US3975165A
Cited
US4086376A
Cited
US4036822A
Cited
US4212922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |