US3741333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generators of fluid wave trains
Assignee: CGG SA
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Filing: 1969-01-23
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Granted: 1973-06-26
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Expires: 1989-01-23
Abstract
Abstract A generator produces vacuum or pressure surges in a sea or a lake so as to form seismic wave trains passing through the bottom of the water bed and back into the water for subsequent investigation. The generator includes a movable system, mainly a disc or a cylinder cover adapted to move between predetermined limits under the impact of a hammering means constituted as a piston urged forwardly in a cylinder so as to violently strike the rear end of the movable system and to produce thereby the desired surges to the rear and/or front of the movable system. The hammering means is subjected when released to the hydrostatic pressure which urges it forwardly into engagement with the rear end of the movable system constituted advantageously by a rod rigid with the disc or the like and extending coaxially in the cylinder for cooperation with the piston.
Inventors
- 👤 R Muniz
- 👤 R Argirakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:00
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/143; G01V1/145
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end which is closed and a rear end which is open, a piston slidingly carried in the cylinder, means for locking the piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a bellows interconnecting the outer edges of the front end of the cylinder and of the plate to form a closed chamber between said front end and said plate.
Claim 2
Dependent Claim
190 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end which is closed and a rear end which is open, a piston slidingly carried in the cylinder, means for locking the piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a bellows interconnecting the outer edges of the front end of the cylinder and of the plate to form a closed chamber between said front end and said plate.
Claim 3
Dependent Claim
185 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end whicH is closed and a rear end which is open, a piston slidingly carried in the cylinder, means for locking the piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a cylindrical section rigid with the outer edge of the plate directed rearwardly to sealingly and slidingly engage the outer periphery of the cylinder.
Claim 4
Dependent Claim
185 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end whicH is closed and a rear end which is open, a piston slidingly carried in the cylinder, means for locking the piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a cylindrical section rigid with the outer edge of the plate directed rearwardly to sealingly and slidingly engage the outer periphery of the cylinder.
Claim 5
Dependent Claim
184 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end which is closed and a rear end which is open, a piston slidingly carried in the cylinder, means for locking the piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a forwardly open cylindrical extension of the cylinder lying to the front thereof and in which the plate is slidingly and sealingly fitted.
Claim 6
Dependent Claim
184 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end which is closed and a rear end which is open, a piston slidingly carried in the cylinder, means for locking the piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a forwardly open cylindrical extension of the cylinder lying to the front thereof and in which the plate is slidingly and sealingly fitted.
Claim 7
Dependent Claim
190 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end which is closed and a rear end which is open, a piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a stationary auxiliary cylinder coaxially rigid with the first-mentioned cylinder closed at its outer end and a cylindrical section coaxially rigid with the plate, extending to the front thereof and adapted to slidingly and sealingly engage said auxiliary cylinder.
Claim 8
Dependent Claim
190 words
A generator of wave trains in water comprising a stationary cylinder adapted to be immersed in water and having a front end which is closed and a rear end which is open, a piston in position near the rear end of the cylinder, a movable system including a plate extending outside the front end of the cylinder perpendicularly to the axis of the latter and a rod rigid with said plate and slidingly extending through the closed front end of the cylinder, means urging the plate towards the outer surface of the closed front end of the cylinder and the rod to a projecting position within the cylinder, means adapted to release the piston locking means whereby the hydrostatic pressure forceably urges the piston forwardly to make it impinge on the rear end of said rod and cause the plate to move outwardly thereby to produce surges in the water, and a stationary auxiliary cylinder coaxially rigid with the first-mentioned cylinder closed at its outer end and a cylindrical section coaxially rigid with the plate, extending to the front thereof and adapted to slidingly and sealingly engage said auxiliary cylinder.
Claim 9
Dependent Claim
19 words
A generator of wave trains as claimed in claim 4, wherein the plate is constituted by a circular disc.
Claim 10
Dependent Claim
56 words
A generator of wave trains as claimed in claim 4 comprising means feeding a compressed gas into the cylinder to urge the piston back into its position near the rear end of the cylinder and means adapted to produce a partial vacuum to the front of the piston after return of the piston into said position.
Claim 11
Dependent Claim
33 words
A generator of wave trains as claimed in claim 4 comprising hydraulic means adapted to control the return of the piston after operation into its position near the rear end of the cylinder.
References Cited (Backward Citations)
US3277437A
Cited
US3369627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |