US4012267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing pultruded clad composites
Assignee: AT&T Inc
•
Filing: 1975-07-10
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Granted: 1977-03-15
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Expires: 1995-07-10
Abstract
Abstract A method of continuously producing clad composites is disclosed. The cladding is combined with a resin-wet reinforcement and pultruded through a forming and curing die in a single processing step.
Inventors
- 👤 Theodore Harold Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/14; B29; B29C; B29C70/00; B29C70/02; B29C70/028; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/52; B29C70/521; B32B15/20; B32B38/00; B32B38/0008; B32B38/08; B32B5/00; B32B5/02; B32B5/024; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0366; H05K3/00; H05K3/02; H05K3/022; B29K; B29K2067/00; B29K2067/06; B29K2705/00; B29K2705/08; B29K2705/10; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2305/00; B32B2305/08; B32B2310/00; B32B2310/08; B32B2310/0806; B32B2310/0831; B32B2311/00; B32B2311/12; B32B2457/00; B32B2457/08; H05K2201/00; H05K2201/02; H05K2201/0275; H05K2201/0287; H05K2201/029; H05K2203/00; H05K2203/06; H05K2203/068; H05K2203/07; H05K2203/0779; H05K2203/0783; H05K2203/15; H05K2203/1545
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
91 words
A continuous process for forming a composite of a fibrous first material clad with at least one second metal foil cladding material comprising: a. impregnating a continuous length of a fibrous first material with a contracting liquid resin, b. combining the impregnated fibrous first material in a continuous manner with a continuous length of a second metal foil cladding material, c. pultruding in a continuous manner the combination of the first and second materials through a forming and curing die, thereby continuously and simultaneously forming and fully curing a clad composite.
Claim 2
Dependent Claim
91 words
A continuous process for forming a composite of a fibrous first material clad with at least one second metal foil cladding material comprising: a. impregnating a continuous length of a fibrous first material with a contracting liquid resin, b. combining the impregnated fibrous first material in a continuous manner with a continuous length of a second metal foil cladding material, c. pultruding in a continuous manner the combination of the first and second materials through a forming and curing die, thereby continuously and simultaneously forming and fully curing a clad composite.
Claim 3
Dependent Claim
12 words
The process of claim 1 where the resin is a polyester resin.
Claim 4
Dependent Claim
16 words
The process of claim 1 where the cladding is on only one side of the composite.
Claim 5
Dependent Claim
23 words
The process of claim 3 where the unclad side of the composite is sprayed with a mold release prior to entering the die.
Claim 6
Dependent Claim
11 words
The process of claim 1 where the metal foil is copper.
Claim 7
Dependent Claim
15 words
The process of claim 1 where the cladding is on both sides of the composite.
Claim 8
Dependent Claim
15 words
The process of claim 6 where the upper and lower claddings are the same material.
Claim 9
Dependent Claim
16 words
The process of claim 6 where the upper and lower cladding are of copper metal foil.
Claim 10
Dependent Claim
15 words
The process of claim 6 where the upper and lower claddings are of different materials.
Claim 11
Dependent Claim
18 words
The process of claim 9 where one of the said different cladding materials is a copper metal foil.
Claim 12
Dependent Claim
15 words
The process of claim 1 where the resin is one which is cured by heating.
Claim 13
Dependent Claim
18 words
The process of claim 1 where the resin is one which is cured by exposure to ultraviolet radiation.
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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) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |