US4187271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making same
Assignee: Owens Corning Fiberglas Technology Inc
•
Filing: 1978-11-02
•
Granted: 1980-02-05
•
Expires: 1998-11-02
Abstract
Abstract Method of making a casing reinforced by a stretchable glass fiber preform is disclosed. The casing may be reinforced by metal or a glass fiber mat which is shaped to provide positive engagement with the stretchable fiber preform before its impregnation by a matrix-forming resin.
Inventors
- 👤 J. Albert Rolston
- 👤 Thomas E. Philipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:43
CPC Classifications
F; F42; F42B; F42B5/00; F42B5/26; F42B5/30; B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/443; B29C70/68; B29C70/86; B29D; B29D22/00; B29D23/00; B29D23/20; F42B5/307; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29K; B29K2105/00; B29K2105/06; B29L; B29L2023/00; B29L2023/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
A method for making a casing comprising: (a) inserting a fibrous preform into a first end of a fibrous sleeve, said preform being configured to interlock said sleeve with an encircling preformed ring and without said ring form a head for said casing; (b) expanding an expandible core within said fibrous preform and said sleeve to expand said preform and said sleeve into said ring within a mold; (c) introducing hardenable resin between said expandible core and inner walls of said mold to impregnate said fibrous sleeve and said fibrous preform; (d) hardening said resin to form said casing; and removing said casing from said mold.
Claim 2
Independent Claim
106 words
A method for making a casing comprising: (a) inserting a fibrous preform into a first end of a fibrous sleeve, said preform being configured to interlock said sleeve with an encircling preformed ring and without said ring form a head for said casing; (b) expanding an expandible core within said fibrous preform and said sleeve to expand said preform and said sleeve into said ring within a mold; (c) introducing hardenable resin between said expandible core and inner walls of said mold to impregnate said fibrous sleeve and said fibrous preform; (d) hardening said resin to form said casing; and removing said casing from said mold.
Claim 3
Dependent Claim
27 words
The method of claim 1 in which said fibrous preform is positioned within a ring and said sleeve is positioned between said fibrous preform and said ring.
Claim 4
Dependent Claim
28 words
The method of claim 2 in which said fibrous preform is adapted with a circumferential groove adapted to receive a projection on the inner surface of said ring.
Claim 5
Dependent Claim
65 words
In a method for making a tubular casing having a closed end, the steps comprising: (a) inserting a fibrous preform into a first end of a fibrous sleeve, said preform being configured to interlock said sleeve with an encircling preformed ring and with said ring form a head for said casing; (b) expanding said preform within said ring to interlock said sleeve with said ring.
Claim 6
Dependent Claim
65 words
In a method for making a tubular casing having a closed end, the steps comprising: (a) inserting a fibrous preform into a first end of a fibrous sleeve, said preform being configured to interlock said sleeve with an encircling preformed ring and with said ring form a head for said casing; (b) expanding said preform within said ring to interlock said sleeve with said ring.
Claim 7
Dependent Claim
20 words
The method of claim 4 including performing said expanding by inflating an expandible core within said sleeve and said preform.
Claim 8
Dependent Claim
28 words
The method of claim 4 including expanding a tubular member within an open end of said sleeve opposite said preform to reinforce said sleeve adjacent said open end.
Claim 9
Dependent Claim
19 words
The method of claim 4 including introducing a resin within said mold to impregnate said sleeve and said preform.
Claim 10
Dependent Claim
13 words
The method of claim 7 including hardening said resin to form said casing.
Claim 11
Dependent Claim
28 words
The method of claim 8 including expanding a tubular member within an open end of said sleeve opposite said preform to reinforce said sleeve adjacent said open end.
References Cited (Backward Citations)
US2564695A
Cited
US2837456A
Cited
US2838435A
Cited
US2937401A
Cited
US3258384A
Cited
US3842739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |