US3137038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for molding thermosetting materials
Assignee: Standard Oil Co
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Filing: 1961-03-08
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Granted: 1964-06-16
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Expires: 1981-03-08
Abstract
No abstract record available.
Inventors
- 👤 Maynard Charles Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:19
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/17; B29C45/46; Y; Y10; Y10S; Y10S425/00; Y10S425/224; Y10S425/812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
APPARATUS FOR MOLDING ARTICLES FROM A THERMOSETTING PLASTIC MATERIAL WHICH COMPRISES RELATIVELY MOVABLE MOLD MEMBERS FORMING A MOLD CAVITY WHEN THE MEMBERS ARE IN CLOSED RELATION, ONE OF SAID MOLD MEMBERS BEING PROVIDED WITH AN ENTRANCE OPENING, A CHAMBER COMMUNICATING WITH SAID OPENING AND CONFORMING IN CROSS SECTION THERETO, A PLUNGER MOUNTED FOR RECIPROCATION IN SAID CHAMBER AND OPENING, A GATE TO CLOSE THE END OF SAID CHAMBER ADJACENT SAID MOLD OPENING, MEANS TO INTRODUCE A MEASURED CHANGE OF MOLDING MATERIAL INTO SAID CHAMBER IN ADVANCE OF THE PLUNGER, MEANS TO ADVANCE THE PLUNGER TO COMPRESS THE CHARGE BETWEEN THE PLUNGER AND SAID GATE
Claim 2
Dependent Claim
104 words
APPARATUS FOR MOLDING ARTICLES FROM A THERMOSETTING PLASTIC MATERIAL WHICH COMPRISES RELATIVELY MOVABLE MOLD MEMBERS FORMING A MOLD CAVITY WHEN THE MEMBERS ARE IN CLOSED RELATION, ONE OF SAID MOLD MEMBERS BEING PROVIDED WITH AN ENTRANCE OPENING, A CHAMBER COMMUNICATING WITH SAID OPENING AND CONFORMING IN CROSS SECTION THERETO, A PLUNGER MOUNTED FOR RECIPROCATION IN SAID CHAMBER AND OPENING, A GATE TO CLOSE THE END OF SAID CHAMBER ADJACENT SAID MOLD OPENING, MEANS TO INTRODUCE A MEASURED CHANGE OF MOLDING MATERIAL INTO SAID CHAMBER IN ADVANCE OF THE PLUNGER, MEANS TO ADVANCE THE PLUNGER TO COMPRESS THE CHARGE BETWEEN THE PLUNGER AND SAID GATE
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |