US4633931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing fiber-reinforced composite body
Assignee: Honda Motor Co Ltd
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Filing: 1984-03-14
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Granted: 1987-01-06
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Expires: 2004-03-14
Abstract
Abstract A method of producing a fiber-reinforced composite material comprising the steps of arranging a fiber shaped article in a cavity of a casting mold; pouring a molten metal acting as a matrix into the cavity and subjecting the molten metal to primary pressure; holding the molten metal under pressure for a predetermined period of time; and subjecting the molten metal, at least in proximity of one end of the fiber shaped article, to secondary pressure with a high hydrostatic pressure after the predetermined period of time has passed, to fill the molted metal into the fiber shaped article and integrate them.
Inventors
- 👤 Fumio Yamaguchi
- 👤 Yoshiaki Nakaniwa
- 👤 Yoshiaki Masuda
- 👤 Hisayuki Sakurai
- 👤 Waichiro Nakashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:17
CPC Classifications
F; F16; F16C; F16C7/00; F16C7/02; F16C7/026; B; B22; B22D; B22D19/00; B22D19/14; B22D27/00; B22D27/09; C; C22; C22C; C22C47/00; C22C47/08; B60; B60G; B60G2206/00; B60G2206/01; B60G2206/10; B60G2206/11; B60G2206/70; B60G2206/71; B60G2206/7102; B60G2206/80; B60G2206/81; B60G2206/8101
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
133 words
A method of producing a fiber-reinforced composite body comprising the steps of: arranging a fiber shaped article in a cavity of a casting mold; filling a molten metal acting as a matrix into said cavity and subjecting it to primary pressure; holding said molten metal under said primary pressure for a predetermined period of time to bring said molten metal into a semi-solidified state; and subjecting said molten metal now in said semi-solidified state, to a hydrostatic pressure of a magnitude greater than said primary pressure while a secondary pressure of higher magnitude than said primary pressure is additionally and simultaneously applied locally in proximity to at least one end of said fiber shaped article to completely fill said molten metal into said fiber shaped article to integrate said metal and said article.
Claim 2
Independent Claim
133 words
A method of producing a fiber-reinforced composite body comprising the steps of: arranging a fiber shaped article in a cavity of a casting mold; filling a molten metal acting as a matrix into said cavity and subjecting it to primary pressure; holding said molten metal under said primary pressure for a predetermined period of time to bring said molten metal into a semi-solidified state; and subjecting said molten metal now in said semi-solidified state, to a hydrostatic pressure of a magnitude greater than said primary pressure while a secondary pressure of higher magnitude than said primary pressure is additionally and simultaneously applied locally in proximity to at least one end of said fiber shaped article to completely fill said molten metal into said fiber shaped article to integrate said metal and said article.
Claim 3
Dependent Claim
22 words
The method of producing a fiber-reinforced composite body as defined in claim 1 wherein said fiber shaped article consists of metal fibers.
Claim 4
Dependent Claim
22 words
The method of producing a fiber-reinforced composite body as defined in claim 1 wherein said molten metal consists of an aluminum alloy.
Claim 5
Dependent Claim
25 words
The method of producing a fiber-reinforced composite body as defined in claim 1, wherein said primary pressure is between 360 to 600 kg/cm 2 .
Claim 6
Dependent Claim
29 words
The method of producing a fiber-reinforced composite body as defined in claim 1, wherein said molten metal is held under said primary pressure for between 1 to 10 seconds.
Claim 7
Dependent Claim
25 words
The method of producing a fiber-reinforced composite body as defined in claim 1, wherein said secondary pressure is between 1,000 to 2,500 kg/cm 2 .
Claim 8
Dependent Claim
29 words
The method of producing a fiber-reinforced composite body as defined in claim 1, wherein said casting mold is heated to between 250° to 350° C. before casting is effected.
Claim 9
Dependent Claim
30 words
The method of producing a fiber-reinforced composite body as defined in claim 1, wherein said fiber shaped article is heated to between 460° to 700° C. before casting is effected.
Claim 10
Dependent Claim
126 words
The method of producing a fiber-reinforced composite body as defined in claim 1, wherein said fiber-reinforced composite material is a connecting rod for an internal-combustion engine including a big-end portion, a small-end portion, and a fiber-reinforced rod portion connecting said big-end portion to said small-end portion; said cavity of said casting mold consists of a big-end forming portion, a small-end forming portion and a rod-forming portion positioned between said big-end and small-end forming portions; said fiber shaped article of a rod-like form is arranged at the center of said rod-forming portion; and after said molten metal is filled into said cavity and is held under said primary pressure for a predetermined period of time, said big-end and small-end forming portions are compressed with said secondary pressure.
Claim 11
Dependent Claim
33 words
The method of producing a fiber-reinforced composite body as defined in claim 9 wherein said casting mold has a runner box communicating with said small-end forming portion and becoming filled with molten metal.
Claim 12
Dependent Claim
37 words
The method of producing a fiber-reinforced composite body as defined in claim 10 wherein said molten metal filled into said runner box is subject to a high hydrostatic pressure simultaneously with the application of said secondary pressure.
Claim 13
Dependent Claim
45 words
The method of producing a fiber-reinforced composite body as defined in claim 1 wherein the secondary pressure is applied locally to the molten metal in semi-solidified state by displacing a press punch of relatively small diameter, under pressure, against said molten metal in semi-solidified state.
Claim 14
Dependent Claim
152 words
In a method of producing a fiber-reinforced composite member including the steps of arranging a fiber shaped article in a cavity of a casting mold, pouring a molten metal acting as a matrix into said cavity and applying a high hydrostatic pressure to the molten metal to cause the molten metal to be filled into and integrated with said fiber shaped article by high-pressure solidification casting, the improvement wherein said molten metal is held under primary pressure for a predetermined period of time so as to be brought into a semi-solidified state, and then the molten metal in said semi-solidified state is subjected to a hydrostatic pressure of a magnitude greater than said primary pressure while a secondary pressure of a magnitude greater than said primary pressure is additionally and simultaneously applied locally to said molten metal in semi-solidified state in proximity to at least one end of said fiber shaped article.
Claim 15
Dependent Claim
152 words
In a method of producing a fiber-reinforced composite member including the steps of arranging a fiber shaped article in a cavity of a casting mold, pouring a molten metal acting as a matrix into said cavity and applying a high hydrostatic pressure to the molten metal to cause the molten metal to be filled into and integrated with said fiber shaped article by high-pressure solidification casting, the improvement wherein said molten metal is held under primary pressure for a predetermined period of time so as to be brought into a semi-solidified state, and then the molten metal in said semi-solidified state is subjected to a hydrostatic pressure of a magnitude greater than said primary pressure while a secondary pressure of a magnitude greater than said primary pressure is additionally and simultaneously applied locally to said molten metal in semi-solidified state in proximity to at least one end of said fiber shaped article.
Claim 16
Dependent Claim
22 words
The method of producing a fiber-reinforced composite body as defined in claim 13, wherein said fiber shaped article consists of metal fibers.
Claim 17
Dependent Claim
22 words
The method of producing a fiber-reinforced composite body as defined in claim 13 wherein said molten metal consists of an aluminum alloy.
Claim 18
Dependent Claim
130 words
The method of producing a fiber-reinforced composite body as defined in claim 13, wherein said fiber-reinforced composite material is a connecting rod for an internal-combustion engine including a big-end portion, a small-end portion, and a fiber-reinforced rod portion connecting said big-end portion to said small-end portion; said cavity of said casting mold consists of a big-end forming portion, a small-end forming portion, and a rod-forming portion positioned between said big-end and small-end forming portions; said fiber shaped article is of rod-like form and arranged at the center of said rod-forming portion; and after said molten metal is filled into said cavity and is held under said primary pressure for a predetermined period of time, said big-end and small-end forming portions are subjected to hydrostatic pressure while being additionally pressurized locally.
Claim 19
Dependent Claim
30 words
The method as claimed in claim 13 wherein the primary pressure is between 360 to 600 Kg/cm 2 and the secondary pressure is between 1000 to 2500 Kg/cm 2 .
Claim 20
Dependent Claim
23 words
The method as claimed in claim 13 wherein the application of said primary and local secondary pressures are carried out by separate means.
Claim 21
Dependent Claim
48 words
The method as claimed in claim 13 wherein the molten metal is compressed hydrostatically at a pressure of between 1,000 to 1,200 kg/cm 2 while said parts of the molten metal are subjected to said local secondary pressure of a magnitude between 1,000 and 2,500 kg/cm 2 .
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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |