Patent US3587774A successfully refreshed from Google Patents.
US3587774A
Expired / Lapsed
US
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Seismic shear wave impulse generator
Assignee: Atlantic Richfield Co
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Filing: 1968-08-26
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Granted: 1971-06-28
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Expires: 1988-08-26
Abstract
Abstract A SEISMIC SHEAR WAVE GENERATOR COMPRISING A CLOSED CHAMBER HAVING TWO HORIZONTALLY DISPLACED MEMBERS RESILIENTLY FASTENED TOGETHER TO PERMIT HORIZONTAL MOVEMENT THEREBETWEEN. A COMBUSTIBLE GAS IS IGNITED WITHIN THE CHAMBER AND THE HORIZONTAL MOVEMENT OF ONE OF THE MEMBERS IS TRANSFERRED TO THE GROUND TO CAUSE A SEISMIC SHEAR WAVE. TO GENERATE A SEISMIC TORSIONAL SHEAR WAVE, THREE OF MORE GENERATORS ARE CONNECTED TOGETHER IN A RING AND IGNITED SIMULTANEOUSLY.
Inventors
- 👤 John Bemrose
- 👤 Lauren G Kilmer
- 👤 Elsie Hildegard Bemrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:56
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/04; G01V1/047; G01V1/053; G01V1/104; G01V1/108; G01V1/112; Y; Y10; Y10S; Y10S181/00; Y10S181/40; Y10S181/401
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |