US3087427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power driven, mine clearing explosive snake
Assignee: Saab Bofors AB
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Filing: 1960-10-18
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Granted: 1963-04-30
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Expires: 1980-10-18
Abstract
No abstract record available.
Inventors
- 👤 Thorildsson Karl-John Thorild
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:00
CPC Classifications
F; F41; F41H; F41H11/00; F41H11/12; F41H11/14; B; B64; B64D; B64D17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
245 words
A POWER DRIVEN EXPLOSIVE SNAKE FOR CLEARING A PATH ACROSS A MINE FIELD BY FIRING THE SNAKE ACROSS THE MINE FIELD IN FREE FILGHT AND IN A SUBSTANTIALLY STRETCHED OUT CONDITION, SAID SNAKE COMPRISING A ROLLABLE AND PLIABLE TUBE FILLED WITH AN EXPLOSIVE MATERIAL AND A STABILIZING MEANS FOR STABILIZING THE TRAJECTORY OF THE SNAKE, SAID STABILIZING MEANS BEING ATTACHED TO THE REARWARD END OF THE TUBE AND INCLUDING A PARACHUTE HAVING A CANOPY ARRANGED TO BE OPENED BY THE WIND PRESSURE ACTING UPON THE CANOPY DUE TO THE FLIGHT VELOCITY OF THE SNAKE, SAID PARACHUTE EXERTING A STABILIZING BRAKING FORCE FOR HOLDING THE SNAKE ON ITS TRAJECTORY, THE STRENGTH OF SAID BRAKING FORCE BEING A FUNCTION OF THE EFFECTIVE AREA OF THE CANOPY AND SAID EFFECTIVE AREA BEING A FUNCTION OF THE WIND PRESSURE, AND YIELDABLE COMPENSATING MEANS ATTACHED TO THE PARACHUTE TO HOLD THE CANOPY THEREOF IN A PARTIALLY COLLAPSED SHAPE IN A RELAXED STATE OF THE COMPENSATING MEANS AND TO PERMIT FULL OPENING OF THE CANOPY IN A TENSIONED STATE OF THE COMPENSATING MEANS, SAID COMPENSATING MEANS BEING TENSIONED BY THE OPENING OF THE PARACHUTE AND MAINTAINED TENSIONED BY A WIND PRESSURE ABOVE A PREDETERMINED VALUE, A DECLINE OF THE WIND PRESSURE BELOW SAID VALUE RELEASING THE COMPENSATING MEANS FOR RETURN INTO THE RELAXED STATE THEREOF THEREBY EFFECTING AN AT LEAST PARTIAL COLLAPSE OF THE CANOPY CAUSING AN ABRUPT DECREASE OF THE BRAKING POWER OF THE PARACHUTE BELOW SAID PREDETERMINED WIND PRESSURE.
Claim 2
Dependent Claim
245 words
A POWER DRIVEN EXPLOSIVE SNAKE FOR CLEARING A PATH ACROSS A MINE FIELD BY FIRING THE SNAKE ACROSS THE MINE FIELD IN FREE FILGHT AND IN A SUBSTANTIALLY STRETCHED OUT CONDITION, SAID SNAKE COMPRISING A ROLLABLE AND PLIABLE TUBE FILLED WITH AN EXPLOSIVE MATERIAL AND A STABILIZING MEANS FOR STABILIZING THE TRAJECTORY OF THE SNAKE, SAID STABILIZING MEANS BEING ATTACHED TO THE REARWARD END OF THE TUBE AND INCLUDING A PARACHUTE HAVING A CANOPY ARRANGED TO BE OPENED BY THE WIND PRESSURE ACTING UPON THE CANOPY DUE TO THE FLIGHT VELOCITY OF THE SNAKE, SAID PARACHUTE EXERTING A STABILIZING BRAKING FORCE FOR HOLDING THE SNAKE ON ITS TRAJECTORY, THE STRENGTH OF SAID BRAKING FORCE BEING A FUNCTION OF THE EFFECTIVE AREA OF THE CANOPY AND SAID EFFECTIVE AREA BEING A FUNCTION OF THE WIND PRESSURE, AND YIELDABLE COMPENSATING MEANS ATTACHED TO THE PARACHUTE TO HOLD THE CANOPY THEREOF IN A PARTIALLY COLLAPSED SHAPE IN A RELAXED STATE OF THE COMPENSATING MEANS AND TO PERMIT FULL OPENING OF THE CANOPY IN A TENSIONED STATE OF THE COMPENSATING MEANS, SAID COMPENSATING MEANS BEING TENSIONED BY THE OPENING OF THE PARACHUTE AND MAINTAINED TENSIONED BY A WIND PRESSURE ABOVE A PREDETERMINED VALUE, A DECLINE OF THE WIND PRESSURE BELOW SAID VALUE RELEASING THE COMPENSATING MEANS FOR RETURN INTO THE RELAXED STATE THEREOF THEREBY EFFECTING AN AT LEAST PARTIAL COLLAPSE OF THE CANOPY CAUSING AN ABRUPT DECREASE OF THE BRAKING POWER OF THE PARACHUTE BELOW SAID PREDETERMINED WIND PRESSURE.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |