US2977268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making impregnated glass fiber articles
Assignee: Structural Fibers Inc
•
Filing: 1956-04-11
•
Granted: 1961-03-28
•
Expires: 1976-04-11
Abstract
No abstract record available.
Inventors
- 👤 Donald W Randolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:25
CPC Classifications
B; B65; B65D; B65D11/00; B65D11/02; B65D11/06; B29; B29D; B29D22/00; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10S; Y10S425/00; Y10S425/019; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1031
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN THE MANUFACTURE OF FIBER-REINFORCED MOLDED RESIN TANKS HAVING A LONG DIMENSION, THE STEPS OF COMPLETELY ENCASING A SUBSTANTIALLY CLOSED, POROUS, HOLLOW BODY OF LOOSELY MATTED FIBERS WITHIN A RIGID MOLDING CHAMBER PROVIDING AN INNER SURFACE WHICH CONSTITUTES THE MATRIX OF THE SHAPE OF THE FINAL PRODUCT AND THEREFORE HAS A CORRESPONDING LONG DIMENSION, FILLING A FLEXIBLE ENVELOPE WHICH IS POSITIONED WITHIN SAID CHAMBER WITH PRESSURIZING LIQUID TO CAUSE SAID ENVELOPE TO BE PRESSED BY THE PRESSURE OF SAID LIQUID AGAINST THE INSIDE OF THE HOLLOW FIBER BODY AND TO COMPRESS AND HOLD THE HOLLOW FIBER BODY AGAINST THE INNER SURFACE OF THE MOLDING CHAMBER, INJECTING A MEASURED AMOUNT OF LIQUID THERMOSETTING RESIN INTO SAID CHAMBER WHILE VENTING THE TOP OF SAID CHAMBER AND WHILE MAINTAIN-
Claim 2
Dependent Claim
126 words
IN THE MANUFACTURE OF FIBER-REINFORCED MOLDED RESIN TANKS HAVING A LONG DIMENSION, THE STEPS OF COMPLETELY ENCASING A SUBSTANTIALLY CLOSED, POROUS, HOLLOW BODY OF LOOSELY MATTED FIBERS WITHIN A RIGID MOLDING CHAMBER PROVIDING AN INNER SURFACE WHICH CONSTITUTES THE MATRIX OF THE SHAPE OF THE FINAL PRODUCT AND THEREFORE HAS A CORRESPONDING LONG DIMENSION, FILLING A FLEXIBLE ENVELOPE WHICH IS POSITIONED WITHIN SAID CHAMBER WITH PRESSURIZING LIQUID TO CAUSE SAID ENVELOPE TO BE PRESSED BY THE PRESSURE OF SAID LIQUID AGAINST THE INSIDE OF THE HOLLOW FIBER BODY AND TO COMPRESS AND HOLD THE HOLLOW FIBER BODY AGAINST THE INNER SURFACE OF THE MOLDING CHAMBER, INJECTING A MEASURED AMOUNT OF LIQUID THERMOSETTING RESIN INTO SAID CHAMBER WHILE VENTING THE TOP OF SAID CHAMBER AND WHILE MAINTAIN-
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |