US3828891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic pulse generator
Assignee: Texaco Inc
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Filing: 1972-12-27
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Granted: 1974-08-13
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Expires: 1992-12-27
Abstract
Abstract Disclosed is a system for minimizing distortion in the continuity of the input energy of a seismic energy generator. In a hydraulically operated oscillatory seismic generator, the continuity of the seismic energy input to the ground is affected by the valve operation. The present system employs a differential pumping system to control the pressure input to the hydraulic seismic generator without requiring valves thereby eliminating distortion due to valves.
Inventors
- 👤 E Eisner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:40
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/143; G01V1/145
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A hydraulic vibratory seismic energy source including a cylinder and piston where one of said cylinder and piston is coupled to a foot plate and the other of said cylinder and piston is coupled to a reaction mass; means for reciprocating said piston and cylinder relative to one another including a first fluid transfer path coupling one end of said cylinder to the other end for fluid flow in a first direction, a second fluid transfer path coupling the other end of said cylinder to said one end for fluid flow in said first direction; said fluid transfer paths including first and second pumping means for directing said fluid flow in said first direction whereby a differential in pumping rates can be used to reciprocate said piston and cylinder relative to one another.
Claim 2
Dependent Claim
133 words
A hydraulic vibratory seismic energy source including a cylinder and piston where one of said cylinder and piston is coupled to a foot plate and the other of said cylinder and piston is coupled to a reaction mass; means for reciprocating said piston and cylinder relative to one another including a first fluid transfer path coupling one end of said cylinder to the other end for fluid flow in a first direction, a second fluid transfer path coupling the other end of said cylinder to said one end for fluid flow in said first direction; said fluid transfer paths including first and second pumping means for directing said fluid flow in said first direction whereby a differential in pumping rates can be used to reciprocate said piston and cylinder relative to one another.
Claim 3
Dependent Claim
29 words
The source according to claim 1 and further including in the fluid transfer paths a one way check valve between the cylinder and the input to a pumping means.
Claim 4
Dependent Claim
27 words
The source according to claim 2 and further including in the fluid transfer paths, an accumulator between a check valve and the input to a pumping means.
Claim 5
Dependent Claim
32 words
The source according to claim 1 and further including means for operating said pumping means relative to one another to produce a relative harmonic motion of said piston relative to said cylinder.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |