Patent US3217534A successfully refreshed from Google Patents.
US3217534A
Expired / Lapsed
US
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Apparatus for stopping bullets
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1962-10-26
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Granted: 1965-11-16
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Expires: 1982-10-26
Abstract
No abstract record available.
Inventors
- 👤 Charles T Bingham
- 👤 David I Miller
- 👤 Kozlowski Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:57
CPC Classifications
F; F41; F41J; F41J13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
APPARATUS FOR TEST FIRING SMALL ARMS COMPRISING A TANK, A WATER HEADER SECURED TO SAID TANK, A TUBE COMMUNICATING SAID HEADER WITH SAID TANK, A BULLET ENTRANCE CHAMBER COAXIAL WITH SAID TUBE AND EXTENDING THEREFROM, NOZZLE MEANS DIRECTED INTO SAID TUBE TO FORM A SOLID COLUMN OF FLOWING WATER THEREIN, OVERFLOW MEANS ON SAID TANK, SUMP MEANS ASSOCIATED WITH SAID TANK AND RECEIVING WATER FROM SAID OVERFLOW MEANS, PUMP MEANS FOR DIRECTING WATER FROM SAID SUMP INTO SAID NOZZLE MEANS, ELECTRODE MEANS IN SAID TANK FOR DETECTING THE EXISTENCE OF A PREDETERMINED WATER LEVEL WHEREIN, AND A FLOW SWITCH ACTUATED BY THE OVERFLOW FROM SAID TANK, SAID ELECTRODE MEANS AND SAID FLOW SWITCH BEING CONNECTED IN SERIES AND OPERATIVELY TO PROVIDE A SIGNAL WHEN THE WATER IN SAID TANK IS BELOW A PREDETERMINED HEIGHT.
Claim 2
Dependent Claim
134 words
APPARATUS FOR TEST FIRING SMALL ARMS COMPRISING A TANK, A WATER HEADER SECURED TO SAID TANK, A TUBE COMMUNICATING SAID HEADER WITH SAID TANK, A BULLET ENTRANCE CHAMBER COAXIAL WITH SAID TUBE AND EXTENDING THEREFROM, NOZZLE MEANS DIRECTED INTO SAID TUBE TO FORM A SOLID COLUMN OF FLOWING WATER THEREIN, OVERFLOW MEANS ON SAID TANK, SUMP MEANS ASSOCIATED WITH SAID TANK AND RECEIVING WATER FROM SAID OVERFLOW MEANS, PUMP MEANS FOR DIRECTING WATER FROM SAID SUMP INTO SAID NOZZLE MEANS, ELECTRODE MEANS IN SAID TANK FOR DETECTING THE EXISTENCE OF A PREDETERMINED WATER LEVEL WHEREIN, AND A FLOW SWITCH ACTUATED BY THE OVERFLOW FROM SAID TANK, SAID ELECTRODE MEANS AND SAID FLOW SWITCH BEING CONNECTED IN SERIES AND OPERATIVELY TO PROVIDE A SIGNAL WHEN THE WATER IN SAID TANK IS BELOW A PREDETERMINED HEIGHT.
References Cited (Backward Citations)
US2202197A
Cited
US2356992A
Cited
US2422284A
Cited
US2525843A
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US2518445A
Cited
US2813422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |