Patent US3557900A successfully refreshed from Google Patents.
US3557900A
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Gas exploder with compressible resilient coupling structure
Assignee: Atlantic Richfield Co
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Filing: 1968-10-09
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Granted: 1971-01-26
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Expires: 1988-10-09
Abstract
Abstract An apparatus, which propogates a seismic pulse at a rigid unyielding surface by the explosion of a combustible mixture in a chamber having a rigid bottom and a rigid top resiliently fastened together to permit limited vertical movement therebetween, has a pulse-coupling means comprising a compressible, resilient pad, preferrably of molded polyurethane, on said bottom for coupling seismic pulse energy from the rigid bottom to the rigid unyielding surface. Such an apparatus transmits to the rigid unyielding surface a seismic pulse of lower frequency and higher duration than the same apparatus without the compressible, resilient coupling pad.
Inventors
- 👤 Lauren G Kilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:18
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104; G01V1/108; G01V1/112; G01V1/04; G01V1/047; Y; Y10; Y10S; Y10S181/00; Y10S181/40; Y10S181/401
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
68 words
In an apparatus for propagating a seismic pulse at a rigid unyielding surface by the explosion of a combustible mixture in a chamber having a rigid bottom and a rigid top resiliently fastened together to permit limited vertical movement therebetween, the improvement of a pulse coupling means comprising a compressible, resilient pad snugly attached beneath said rigid bottom and including a plurality of voids to provide increased compressibility.
Claim 2
Dependent Claim
68 words
In an apparatus for propagating a seismic pulse at a rigid unyielding surface by the explosion of a combustible mixture in a chamber having a rigid bottom and a rigid top resiliently fastened together to permit limited vertical movement therebetween, the improvement of a pulse coupling means comprising a compressible, resilient pad snugly attached beneath said rigid bottom and including a plurality of voids to provide increased compressibility.
Claim 3
Dependent Claim
18 words
The improvement of claim 1 in which said compressible, resilient pad includes at least one rigid transmission member.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |