US3915781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin bonded composite articles and process for fabrication thereof
Assignee: RTX Corp
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Filing: 1974-02-28
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Granted: 1975-10-28
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Expires: 1994-02-28
Abstract
Abstract A preconsolidated tape of continuous, high strength filaments in a metal matrix is coated with a layer of adhesive polymer and cut into shaped plies. The coated plies are stacked in a mold and resin bonded together by the application of heat and pressure. Many of the desirable physical properties of a diffusion bonded metal matrix article are also found in the resin bonded metal matrix article of the subject invention. Also, the use of preconsolidated adhesive coated plies eliminates the need for high diffusion bonding pressures and temperatures, thereby cutting the time involved for the bonding and molding operation by a factor of 8 in some instances.
Inventors
- 👤 Richard Charles Novak
- 👤 Roscoe Adams Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:15
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B7/00; B32B7/04; B32B7/12; B32B15/14; B32B15/20; C; C22; C22C; C22C47/00; C22C47/02; C22C47/06; C22C47/062; C22C47/20; B32B2255/00; B32B2255/02; B32B2255/20; B32B2262/00; B32B2262/10; B32B2305/00; B32B2305/08; B32B2307/00; B32B2307/50; B32B2307/542; B32B2307/546; B32B2311/00; B32B2311/24; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T428/00; Y10T428/24; Y10T428/24132; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
152 words
A PROCESS FOR FABRICATING A COMPOSITE ARTICLE FROM A TAPE OF CONTINUOUS HIGH STRENGTH, HIGH MODULUS, PARALLEL FILAMENTS SAID FILAMENTS BEING COMPLETELY SURROUNDED BY A FULLY DENSIFIED METAL MATRIX MATERIAL COMPRISING THE STEPS OF: CUTTING A FULLY DENSIFIED, PRECONSOLIDATED TAPE INTO A PLUTALITY SHAPED PILES, CLEANING THE SURFACE OF THE PILES TO WHICH AN ADHESIVE POLYMER IS TO BE APPLIED AS REQUIRED TO ASSURE A HIGH QUALITY BOND, APPLYING A LAYER OF ADHESIVE POLYMER RESIN TO AT LEAST ONE SIDE OF EACH PLY PRIOR TO OR SEBSEQUENT TO SAID STEP OF CUTTING, STACKING SAID COATED PILES WITHIN A MOLD OF THE DESIRED FORM, AND RESIN BONDING SAID PILES TOGETHER AND FORMING THEM TO THE SHAPE OF THE MOLD SIMULTANEOUSLY HEATING SAID STACK OF PILES TO A TEMPERATURE NO GREATER THEN 800*F AND APPLYING A PRESSURE OF BETWEEN 14.7 AND 2,000 PSIG TO SAID STACK OF PILES FOR FROM 1.0 TO 120 MINUTES.
Claim 2
Dependent Claim
152 words
A PROCESS FOR FABRICATING A COMPOSITE ARTICLE FROM A TAPE OF CONTINUOUS HIGH STRENGTH, HIGH MODULUS, PARALLEL FILAMENTS SAID FILAMENTS BEING COMPLETELY SURROUNDED BY A FULLY DENSIFIED METAL MATRIX MATERIAL COMPRISING THE STEPS OF: CUTTING A FULLY DENSIFIED, PRECONSOLIDATED TAPE INTO A PLUTALITY SHAPED PILES, CLEANING THE SURFACE OF THE PILES TO WHICH AN ADHESIVE POLYMER IS TO BE APPLIED AS REQUIRED TO ASSURE A HIGH QUALITY BOND, APPLYING A LAYER OF ADHESIVE POLYMER RESIN TO AT LEAST ONE SIDE OF EACH PLY PRIOR TO OR SEBSEQUENT TO SAID STEP OF CUTTING, STACKING SAID COATED PILES WITHIN A MOLD OF THE DESIRED FORM, AND RESIN BONDING SAID PILES TOGETHER AND FORMING THEM TO THE SHAPE OF THE MOLD SIMULTANEOUSLY HEATING SAID STACK OF PILES TO A TEMPERATURE NO GREATER THEN 800*F AND APPLYING A PRESSURE OF BETWEEN 14.7 AND 2,000 PSIG TO SAID STACK OF PILES FOR FROM 1.0 TO 120 MINUTES.
Claim 3
Dependent Claim
44 words
The process according to claim 1 wherein the consolidated tape includes filaments selected from the group consisting of boron filaments and boron filaments coated with silicon carbide, and a metal matrix material is selected from the group consisting of aluminum and alloys of aluminum.
Claim 4
Dependent Claim
29 words
The process according to claim 1 wherein the step of applying a layer of adhesive polymer includes applying a layer of adhesive polymer to both sides of said tape.
Claim 5
Dependent Claim
30 words
The process according to claim 1 wherein the layer of adhesive polymer resin is selected from the group consisting of a liquid resin and an unsupported layer of thermoplastic resin.
Claim 6
Dependent Claim
32 words
The process according to claim 1 wherein the step of applying a layer of adhesive polymer resin includes applying a layer of a thermoplastic resin supported in a medium of fibrous material.
Claim 7
Dependent Claim
32 words
The process according to claim 1 wherein the step of applying a layer of adhesive polymer resin includes applying a layer of a thermosetting resin supported in a medium of fibrous material.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |