Patent US3349833A successfully refreshed from Google Patents.
US3349833A
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Pressure molding venting method
Assignee: Individual
•
Filing: 1964-11-13
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Granted: 1967-10-31
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Hodler Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:36
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/34; B22; B22D; B22D17/00; B22D17/14; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A METHOD OF OPERATING A PRESSURE MOLDING MACHINE HAVING A DIE FORMED WITH A CAVITY AND A VENT CONDUIT OF SUBSTANTIALLY SMALLER FLOW SECTION THAN THE FLOW SECTION OF THE CAVITY AND COMMUNICATING WITH THE SAME, THE MACHINE INCLUDING FLUID OPERATED INJECTING MEANS FOR FORCING A LIQUID MOLDING MATERIAL INTO THE CAVITY, THERE BEING IN INCREASE IN THE PRESSURE OF THE OPERATING FLUID IN SAID INJECTING MEANS WHEN SAID LIQUID MOLDING MATERIAL ENTERS SAID VENT CONDUIT FROM SAID CAVITY, THE STEP OF BLOCKING SAID VENT CONDUIT IN RESPONSE TO SAID INCREASE.
Claim 2
Dependent Claim
92 words
IN A METHOD OF OPERATING A PRESSURE MOLDING MACHINE HAVING A DIE FORMED WITH A CAVITY AND A VENT CONDUIT OF SUBSTANTIALLY SMALLER FLOW SECTION THAN THE FLOW SECTION OF THE CAVITY AND COMMUNICATING WITH THE SAME, THE MACHINE INCLUDING FLUID OPERATED INJECTING MEANS FOR FORCING A LIQUID MOLDING MATERIAL INTO THE CAVITY, THERE BEING IN INCREASE IN THE PRESSURE OF THE OPERATING FLUID IN SAID INJECTING MEANS WHEN SAID LIQUID MOLDING MATERIAL ENTERS SAID VENT CONDUIT FROM SAID CAVITY, THE STEP OF BLOCKING SAID VENT CONDUIT IN RESPONSE TO SAID INCREASE.
References Cited (Backward Citations)
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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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |