US4498219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing a fiber-reinforced piston for internal combustion engines
Assignee: Honda Motor Co Ltd
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Filing: 1982-06-15
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Granted: 1985-02-12
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Expires: 2002-06-15
Abstract
Abstract A fiber-reinforced piston for internal combustion engines, comprising a molded body of inorganic fiber forming a top land and a ring region of the piston. The molded body has a content of granulated fiber having larger particles of a particle diameter less than 100 mesh in an amount of not more than 10 weight percent with respect to the total amount of fiber used, and a light alloy matrix fills and is combined with the molded body of inorganic fiber.
Inventors
- 👤 Keisuke Ban
- 👤 Akimasa Daimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:56
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/10; F; F02; F02F; F02F3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/49259
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
In a method of producing a fiber reinforced piston of an internal combustion engine comprising forming a molded body of inorganic fiber to constitute a top land and ring region for the piston and filling the molded body with a lightweight alloy matrix to integrally join the molded body and alloy matrix, the improvement comprising forming said inorganic fiber with less than 10% by weight of fiber granules having a particle diameter less than 100 mesh from a blanket by subjecting said blanket to a coarse granulated-fiber elimination treatment consisting of a vibration method and a wet type method.
Claim 2
Dependent Claim
99 words
In a method of producing a fiber reinforced piston of an internal combustion engine comprising forming a molded body of inorganic fiber to constitute a top land and ring region for the piston and filling the molded body with a lightweight alloy matrix to integrally join the molded body and alloy matrix, the improvement comprising forming said inorganic fiber with less than 10% by weight of fiber granules having a particle diameter less than 100 mesh from a blanket by subjecting said blanket to a coarse granulated-fiber elimination treatment consisting of a vibration method and a wet type method.
Claim 3
Dependent Claim
15 words
A method as claimed in claim 1 comprising forming annular grooves in said molded body.
Claim 4
Dependent Claim
23 words
A method as claimed in claim 2 wherein said grooves are substantially smooth and straight and provide high fatigue strength for the piston.
References Cited (Backward Citations)
GB669967A
Cited
GB1344286A
Cited
US3959421A
Cited
JPS5341622A
Cited
GB2033805A
Cited
GB2058623A
Cited
EP0080562A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |