Patent US4760298A successfully refreshed from Google Patents.
Patent US3320880A successfully refreshed from Google Patents.
US3320880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antipersonnel mine
Assignee: Individual
•
Filing: 1964-11-25
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Granted: 1967-05-23
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Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:19
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/58; F42B12/60; F42B23/00; F42B23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
245 words
IN AN ANTIPERSONNEL MINE HAVING A SUBSTANTIALLY CYLINDRICAL MAIN BODY, SAID BODY HAVING A PLURALITY OF EQUIANGULARLY SPACED RADIAL BORES AND AN AXIAL BORE THERETHROUGH, A HOUSING HAVING AN UPPER END AND A LOWER END IN SAID AXIAL BORE IN SLIDABLE RELATION WITH SAID MAIN BODY AND HAVING AN AXIAL BORE THEREIN, A PERIPHERAL CAM ON THE LOWER END OF SAID HOUSING, PRESSURE PRODUCING MEANS FIXED TO SAID MAIN BODY AND DISPOSED IN SAID HOUSING AXIAL BORE AT THE LOWER END THEREOF FOR PROVIDING A MOVING FORCE TO SAID HOUSING TO MOVE SAID HOUSING VERTICALLY UPWARDLY, A TRIGGERING MECHANISM DISPOSED IN SAID HOUSING AXIAL BORE ABOVE SAID PRESSURE PRODUCING MEANS AND AXIALLY ALIGNED THEREWITH, MEANS PROVIDING A DOWNWARDLY DIRECTED MOVING FORCE ON SAID TRIGGERING MECHANISM, MEANS HOLDING SAID TRIGGERING MECHANISM AT STATIONARY RELATION WITH SAID MAIN BODY, SAID HOLDING MEANS BEING ADAPTED TO RELEASE WHEN A PREDETERMINED FORCE IS APPLIED TO SAID TRIGGERING MECHANISM BOTH WHEN DIRECTED HORIZONTALLY THERETHROUGH AND WHEN DIRECTED VERTICALLY DOWNWARD THERETHROUGH, A PLURALITY OF SHOTGUN SHELLS INSERTED IN SAID MAIN BODY RADIAL BORES POSITIONED TO FIRE OUTWARDLY THEREFROM, PRIMER MEANS IN SAID MAIN BODY RADIAL BORES FOR FIRING SAID SHOTGUN SHELLS, AND A FIRING PIN ALIGNED WITH EACH OF SAID PRIMER MEANS AND HAVING A REARWARD PORTION POSITIONED IN THE UPWARD PATH OF SAID HOUSING CAM, SO CONSTRUCTED AND ARRANGED THAT SAID PRIMER MEANS ARE ACTUATED TO FIRE SAID SHOTGUN SHELLS SUBSTANTIALLY SIMULTANEOUSLY BY THE UPWARD MOVEMENT OF SAID HOUSING CAM.
Claim 2
Dependent Claim
245 words
IN AN ANTIPERSONNEL MINE HAVING A SUBSTANTIALLY CYLINDRICAL MAIN BODY, SAID BODY HAVING A PLURALITY OF EQUIANGULARLY SPACED RADIAL BORES AND AN AXIAL BORE THERETHROUGH, A HOUSING HAVING AN UPPER END AND A LOWER END IN SAID AXIAL BORE IN SLIDABLE RELATION WITH SAID MAIN BODY AND HAVING AN AXIAL BORE THEREIN, A PERIPHERAL CAM ON THE LOWER END OF SAID HOUSING, PRESSURE PRODUCING MEANS FIXED TO SAID MAIN BODY AND DISPOSED IN SAID HOUSING AXIAL BORE AT THE LOWER END THEREOF FOR PROVIDING A MOVING FORCE TO SAID HOUSING TO MOVE SAID HOUSING VERTICALLY UPWARDLY, A TRIGGERING MECHANISM DISPOSED IN SAID HOUSING AXIAL BORE ABOVE SAID PRESSURE PRODUCING MEANS AND AXIALLY ALIGNED THEREWITH, MEANS PROVIDING A DOWNWARDLY DIRECTED MOVING FORCE ON SAID TRIGGERING MECHANISM, MEANS HOLDING SAID TRIGGERING MECHANISM AT STATIONARY RELATION WITH SAID MAIN BODY, SAID HOLDING MEANS BEING ADAPTED TO RELEASE WHEN A PREDETERMINED FORCE IS APPLIED TO SAID TRIGGERING MECHANISM BOTH WHEN DIRECTED HORIZONTALLY THERETHROUGH AND WHEN DIRECTED VERTICALLY DOWNWARD THERETHROUGH, A PLURALITY OF SHOTGUN SHELLS INSERTED IN SAID MAIN BODY RADIAL BORES POSITIONED TO FIRE OUTWARDLY THEREFROM, PRIMER MEANS IN SAID MAIN BODY RADIAL BORES FOR FIRING SAID SHOTGUN SHELLS, AND A FIRING PIN ALIGNED WITH EACH OF SAID PRIMER MEANS AND HAVING A REARWARD PORTION POSITIONED IN THE UPWARD PATH OF SAID HOUSING CAM, SO CONSTRUCTED AND ARRANGED THAT SAID PRIMER MEANS ARE ACTUATED TO FIRE SAID SHOTGUN SHELLS SUBSTANTIALLY SIMULTANEOUSLY BY THE UPWARD MOVEMENT OF SAID HOUSING CAM.
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |