US4216682A
Expired / Lapsed
US
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Fiber-reinforced light alloy cast article
Assignee: Honda Motor Co Ltd
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Filing: 1979-03-26
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Granted: 1980-08-12
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Expires: 1999-03-26
Abstract
Abstract A fiber-reinforced light alloy cast article for use in various mechanical parts such as, for example, a connecting rod, a rocker arm, and so forth in an internal combustion engine. The composite light alloy cast article includes therein a portion filled with a shaped body made of an inorganic fiber material of high elasticity and high mechanical strength, and another portion filled with a shaped body of inorganic fibers having low elasticity and high hardness and having an appropriate bulk density suited for required purposes, the fiber-shaped bodies being filled in the required portions of the composite light alloy cast article by high pressure solidification casting.
Inventors
- 👤 Keisuke Ban
- 👤 Takeo Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:59
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/49259; Y10T29/49288; Y10T29/49295; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249924; Y10T428/249927; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A fiber-reinforced light alloy cast article having a light alloy matrix, including a portion filled with a shaped body of a mechanically strong inorganic fiber material of high elasticity having young's modulus of more than 15,000 kg/mm 2 and a bulk density ranging from 0.10 g/cc to 0.80 g/cc, and a sliding contact portion filled with a shaped body of a hard inorganic fiber material of low elasticity having young's modulus of less than 10,000 kg/mm 2 and a bulk density ranging from 0.30 g/cc to 1.0 g/cc, both of said shaped fiber bodies being filled into the light alloy matrix by means of high pressure solidification casting.
Claim 2
Dependent Claim
108 words
A fiber-reinforced light alloy cast article having a light alloy matrix, including a portion filled with a shaped body of a mechanically strong inorganic fiber material of high elasticity having young's modulus of more than 15,000 kg/mm 2 and a bulk density ranging from 0.10 g/cc to 0.80 g/cc, and a sliding contact portion filled with a shaped body of a hard inorganic fiber material of low elasticity having young's modulus of less than 10,000 kg/mm 2 and a bulk density ranging from 0.30 g/cc to 1.0 g/cc, both of said shaped fiber bodies being filled into the light alloy matrix by means of high pressure solidification casting.
Claim 3
Dependent Claim
98 words
The cast article of claim 1 in the form of a connecting rod for an internal combustion engine having a rod section, a big end and a small end, wherein the rod section is reinforced with a metal fiber of high elasticity having young's modulus of more than 15,000 kg/mm 2 and a bulk density ranging from 0.10 g/cc to 0.80 g/cc, and the ends of said rod are reinforced with a hard inorganic fiber of low elasticity having young's modulus of less than 10,000 kg/mm 2 and a bulk density ranging from 0.30 g/cc to 1.0 g/cc.
Claim 4
Dependent Claim
93 words
The cast article of claim 1 in the form of a rocker arm for an internal combustion engine having an arm portion and a slipper surface, wherein the arm portion is reinforced with a metal fiber of high elasticity having young's modulus of more than 15,000 kg/mm 2 and a bulk density ranging from 0.10 g/cc to 0.80 g/cc, and the slipper surface is reinforced with a hard inorganic fiber of low elasticity having young's modulus of less than 10,000 kg/mm 2 and a bulk density ranging from 0.30 g/cc to 1.0 g/cc.
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) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |