US4233490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reinforcing aluminium alloy piston ring groove
Assignee: Individual
•
Filing: 1979-06-20
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Granted: 1980-11-11
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Expires: 1999-06-20
Abstract
Abstract Disclosed is a method of reinforcing an aluminium alloy piston ring groove wherein the piston body is fused to a certain depth around the periphery thereof in the zone where the ring groove is to be cut, with simultaneous introduction of an alloying addition into the fused aluminium alloy of the piston body, thus forming an annular wear-resistant weld therein, whereupon the ring groove is cut in the periphery of said weld.
Inventors
- 👤 Alexandr N. Shalai
- 👤 Mikhail D. Nikitin
- 👤 Nikolai I. Zakharov
- 👤 Anatoly P. Bratchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:38
CPC Classifications
B; B23; B23K; B23K10/00; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; F; F16; F16J; F16J9/00; F16J9/12; F16J9/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49265
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
A method of reinforcing an aluminium alloy piston ring groove, wherein an annular wear-resistant weld is formed by fusing the piston body to a certain depth around the periphery thereof in the zone where a ring groove is to be cut, with simultaneous introduction of an alloying addition into the molten piston alloy, whereupon the ring groove is cut in the periphery of said weld.
Claim 2
Independent Claim
65 words
A method of reinforcing an aluminium alloy piston ring groove, wherein an annular wear-resistant weld is formed by fusing the piston body to a certain depth around the periphery thereof in the zone where a ring groove is to be cut, with simultaneous introduction of an alloying addition into the molten piston alloy, whereupon the ring groove is cut in the periphery of said weld.
Claim 3
Dependent Claim
32 words
A method as claimed in claim 1, wherein said fusion penetration is provided in said piston body to a depth of 0.3 to 1.3 times the final depth of said ring groove.
Claim 4
Dependent Claim
13 words
A method as claimed in claim 1, wherein said alloying addition is nickel.
Claim 5
Dependent Claim
15 words
A method as claimed in claim 1, wherein said alloying addition is a nickel-chromium alloy.
Claim 6
Dependent Claim
47 words
A method as claimed in claim 1, wherein, prior to fusion, said piston body is heated up to a temperature ranging from 100° to 300° C., said temperature being maintained constant within the stated range by cooling said piston body with compressed air throughout the fusion process.
Claim 7
Dependent Claim
13 words
A method as claimed in claim 3, wherein the alloy is nickel aluminide.
Claim 8
Dependent Claim
20 words
A method as claimed in claim 5 wherein said piston body is preheated up to a temperature of 200° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |