US4093693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making composite articles
Assignee: Individual
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Filing: 1971-02-22
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Granted: 1978-06-06
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Expires: 1991-02-22
Abstract
Abstract An apparatus and method for making composite articles of a plurality of materials including a matrix having predeterminately disposed therein a plurality of filament-like formations of one or more secondary materials which serve to substantially enhance and predetermine the strength of the matrix. In one form the matrix is composed of metal, while the reinforcing material is composed of filaments or whiskers defining crystals of metal or ceramic materials such as boron nitride, silicon carbide, titanium nitride, etc. One form of the apparatus is operative to feed said filaments or whiskers from a supply thereof while another form is operative to extrude filaments of said materials to shape and directly feed said extruded filaments into a molten metal matrix. In another form of the invention, a hot molten glass is formed into a plurality of filaments which are fed directly, as they are formed, into a matrix composed of a thermosetting or thermoplastic material and they serve to substantially reinforce said matrix material.
Inventors
- 👤 Jerome H. Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/16; B21; B21C; B21C23/00; B21C23/22; B21C23/24; B29C48/00; B29C48/03; B29C48/05; B29C48/06; B29C48/09; B29C48/25; B29C48/30; B29C48/304
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
183 words
A method for producing a composite article comprising: rendering a first material in a molten condition, passing said first material into a chamber in such molten condition, rendering a second material having a melting point above that of said first material also in a molten condition, continuously forcing said second material, while molten, through an orifice communicating with said chamber whereby said second material is formed to shape as it passes through said orifice and is passed continuously, as formed, into the molten first material in said chamber, and surrounding said second material with said first material in said chamber and causing said first and second materials to completely fill said chamber, transferring heat from said second material to said first material so as to solidify said second material within said first material, and thereafter forming said first and second materials into an article by forcing said materials from said chamber and setting and solidifying said first material into a defined shape about said second material to provide a composite material composed of a discrete structural formation of said first and second materials.
Claim 2
Independent Claim
183 words
A method for producing a composite article comprising: rendering a first material in a molten condition, passing said first material into a chamber in such molten condition, rendering a second material having a melting point above that of said first material also in a molten condition, continuously forcing said second material, while molten, through an orifice communicating with said chamber whereby said second material is formed to shape as it passes through said orifice and is passed continuously, as formed, into the molten first material in said chamber, and surrounding said second material with said first material in said chamber and causing said first and second materials to completely fill said chamber, transferring heat from said second material to said first material so as to solidify said second material within said first material, and thereafter forming said first and second materials into an article by forcing said materials from said chamber and setting and solidifying said first material into a defined shape about said second material to provide a composite material composed of a discrete structural formation of said first and second materials.
Claim 3
Dependent Claim
78 words
A method in accordance with claim 1 wherein said second material is in a molten condition when it enters said chamber and said first material is flowed at a rate such that it substantially fills the volume of said chamber which is unoccupied by said second material and completely surrounds the molten second material, and wherein said chamber has a wall which extends smoothly therefrom into a mold, said first material being molded to shape in said mold.
Claim 4
Dependent Claim
51 words
A method in accordance with claim 1 including forming said first material containing said second material disposed therein into a continuous elongated member of substantially constant cross-sectional shape in an extrusion die connected to said chamber and solidifying said elongated member as it passes from said die into a composite extrusion.
Claim 5
Dependent Claim
30 words
A method in accordance with claim 2 wherein predetermined quantities of said first and second materials are flowed into said chamber and combined and thereafter molded to a predetermined shape.
Claim 6
Dependent Claim
39 words
A method in accordance with claim 4 including flowing said first material containing said second material contained therein into a mold from said chamber and solidifying both said first and second materials to the shape of the mold cavity.
Claim 7
Dependent Claim
42 words
A method in accordance with claim 1 including flowing said second material as a plurality of separate filamentary formations into said chamber and wherein all of said filamentary formations are surrounded by said molten first material to which heat is transferred therefrom.
Claim 8
Dependent Claim
30 words
A method in accordance with claim 6 wherein said second material is passed through a plurality of orifices communicating with said chamber and is formed into a plurality of filaments.
Claim 9
Dependent Claim
36 words
A method in accordance with claim 1 wherein said first and second materials are different thermoplastic resins and said second material is solidified in situ within said first material by transferring heat to said first material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-05 | 1981-12-05 | 1982-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-05 | 1985-12-05 | 1986-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-05 | 1989-12-05 | 1990-06-06 | $7700.00 | Window Closed / Lapsed |