US5080056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally sprayed aluminum-bronze coatings on aluminum engine bores
Assignee: GM Global Technology Operations LLC
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Filing: 1991-05-17
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Granted: 1992-01-14
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Expires: 2011-05-17
Abstract
Abstract This specification describes the thermal spraying of an aluminum-bronze alloy coating onto aluminum alloy cylinder bores or piston skirts to provide a scuff- and wear-resistant surface.
Inventors
- 👤 Martin S. Kramer
- 👤 Chester J. Rivard
- 👤 Frank A. Koltuniak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:27
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/0002; F02F7/0007; C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/067; B; B05; B05B; B05B13/00; B05B13/06; B05B13/0627; B05B13/0636; B05B7/00; B05B7/16; B05B7/20; B05B7/22; F02B; F02B75/00; F02B75/16; F02B75/18; F02B2075/1804; F02B2075/1816; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021; F05C2201/04; F05C2201/0433; F05C2201/0436; F05C2201/0448; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/49263; Y10T29/4927; Y10T29/49272
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A method of making a cast hypoeutectic aluminum-silicon alloy engine block with a wear-resistant coating on the surface of the cylinder wall portions thereof comprising casting an aluminum engine block of such an aluminum composition with the cylinder wall portions slightly oversized, applying a coating of an aluminum-bronze alloy to the cylinder wall portions of such castings by melting the aluminum-bronze composition in a high velocity stream of an oxygen hydrocarbon fuel gas and propelling the molten aluminum-bronze alloy onto the surface of the cylinder walls in a uniform layer, the thickness of which is greater than the desired final coating, and machining the aluminum-bronze coating to a desired finished dimension.
Claim 2
Independent Claim
111 words
A method of making a cast hypoeutectic aluminum-silicon alloy engine block with a wear-resistant coating on the surface of the cylinder wall portions thereof comprising casting an aluminum engine block of such an aluminum composition with the cylinder wall portions slightly oversized, applying a coating of an aluminum-bronze alloy to the cylinder wall portions of such castings by melting the aluminum-bronze composition in a high velocity stream of an oxygen hydrocarbon fuel gas and propelling the molten aluminum-bronze alloy onto the surface of the cylinder walls in a uniform layer, the thickness of which is greater than the desired final coating, and machining the aluminum-bronze coating to a desired finished dimension.
Claim 3
Dependent Claim
31 words
An aluminum automotive engine block cast of a hypoeutectic aluminum-silicon alloy and containing a dense, thermally sprayed coating of aluminum-bronze alloy applied to the cylinder wall portions of the cast block.
Claim 4
Dependent Claim
31 words
An aluminum automotive engine block cast of a hypoeutectic aluminum-silicon alloy and containing a dense, thermally sprayed coating of aluminum-bronze alloy applied to the cylinder wall portions of the cast block.
Claim 5
Dependent Claim
31 words
An aluminum automotive engine block cast of a hypoeutectic aluminum-silicon 319 alloy and containing a thermally sprayed coating of aluminum-bronze alloy applied to the cylinder wall portions of the cast block.
Claim 6
Dependent Claim
31 words
An aluminum automotive engine block cast of a hypoeutectic aluminum-silicon 319 alloy and containing a thermally sprayed coating of aluminum-bronze alloy applied to the cylinder wall portions of the cast block.
Claim 7
Independent Claim
67 words
A method of applying a wear-resistant coating of aluminum-bronze alloy to an aluminum alloy automotive piston comprising melting the aluminum-bronze alloy in a high velocity stream of an oxygen-hydrocarbon fuel gas and propelling the molten alloy onto a surface of the piston in a dense, uniform layer, the thickness of which is greater than the desired final coating, and machining the coating to a desired finished dimension.
Claim 8
Independent Claim
67 words
A method of applying a wear-resistant coating of aluminum-bronze alloy to an aluminum alloy automotive piston comprising melting the aluminum-bronze alloy in a high velocity stream of an oxygen-hydrocarbon fuel gas and propelling the molten alloy onto a surface of the piston in a dense, uniform layer, the thickness of which is greater than the desired final coating, and machining the coating to a desired finished dimension.
Claim 9
Dependent Claim
23 words
An aluminum alloy automotive piston having a dense, thermally sprayed coating of aluminum-bronze alloy applied to cylinder wall engaging surfaces of the piston.
Claim 10
Dependent Claim
23 words
An aluminum alloy automotive piston having a dense, thermally sprayed coating of aluminum-bronze alloy applied to cylinder wall engaging surfaces of the piston.
References Cited (Backward Citations)
CA649027A
Cited
US3405610A
Cited
US3715790A
Cited
US3878880A
Cited
GB1583349A
Cited
US4798770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |