US3323531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick opening gate valve
Assignee: Individual
•
Filing: 1964-08-11
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Granted: 1967-06-06
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Expires: 1984-08-11
Abstract
No abstract record available.
Inventors
- 👤 Edsel A Spellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:22
CPC Classifications
F; F41; F41A; F41A33/00; F41A33/04; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A QUICK OPENING VALVE FOR USE IN A ROCKET BLAST SIMULATOR HAVING A BLAST LINE, COMPRISING A PISTON HOUSING SECURED OUTSIDE OF THE BLAST LINE, SAID HOUSING HAVING AN OPEN BOTTOM PORTION AND A TOP PORTION COMMUNICATING WITH THE BLAST LINE HAVING AN ELONGATED SLOT THEREIN, A PISTON SLIDABLY MOVABLE IN SAID HOUSING, A GATE VALVE SECURED TO SAID PISTON EXTENDING THROUGH SAID SLOT AND INTO THE BLAST LINE TO CLOSE SAME, SAID GATE VALVE BEING OF A SIZE AND CONFIGURATION TO ENABLE IT TO PASS FREELY THROUGH SAID ELONGATED SLOT AND SAID HOUSING, A RUPTURABLE DIAPHRAGM CLOSING THE BOTTOM PORTION OF SAID HOUSING, MEANS FOR RUPTURING SAID DIAPHRAGM, AND MEANS SUPPLYING PRESSURE WITHIN SAID PISTON HOUSING ON OPPOSITE SIDES OF THE PISTON TO EJECT SAID GATE VALVE AND PISTON FROM SAID HOUSING WHEN SAID DIAPHRAGM IS RUPTURED.
Claim 2
Dependent Claim
138 words
A QUICK OPENING VALVE FOR USE IN A ROCKET BLAST SIMULATOR HAVING A BLAST LINE, COMPRISING A PISTON HOUSING SECURED OUTSIDE OF THE BLAST LINE, SAID HOUSING HAVING AN OPEN BOTTOM PORTION AND A TOP PORTION COMMUNICATING WITH THE BLAST LINE HAVING AN ELONGATED SLOT THEREIN, A PISTON SLIDABLY MOVABLE IN SAID HOUSING, A GATE VALVE SECURED TO SAID PISTON EXTENDING THROUGH SAID SLOT AND INTO THE BLAST LINE TO CLOSE SAME, SAID GATE VALVE BEING OF A SIZE AND CONFIGURATION TO ENABLE IT TO PASS FREELY THROUGH SAID ELONGATED SLOT AND SAID HOUSING, A RUPTURABLE DIAPHRAGM CLOSING THE BOTTOM PORTION OF SAID HOUSING, MEANS FOR RUPTURING SAID DIAPHRAGM, AND MEANS SUPPLYING PRESSURE WITHIN SAID PISTON HOUSING ON OPPOSITE SIDES OF THE PISTON TO EJECT SAID GATE VALVE AND PISTON FROM SAID HOUSING WHEN SAID DIAPHRAGM IS RUPTURED.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |