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US3611975A
Expired / Lapsed
US
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Paravane device
Assignee: Individual
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Filing: 1969-08-15
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Granted: 1971-10-12
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Expires: 1989-08-15
Abstract
Abstract A paravane for maintaining a seismic cable being towed through the water at a predetermined distance above the water floor. The paravane includes a cylindrical body characterized by diametrically opposed wing members actuated by an air pressurized piston which moves the wing members into an ascending or descending position. Predetermined operating depths of the paravane is accomplished by resisting spring means acting in opposition to movement of the pressurized piston. The diving depth of the device may be varied by adjustment of the resisting means and air pressure so as to accomplish uniform depth control of all the paravanes which are connected to the seismic cable.
Inventors
- 👤 Clifford Logan Ashbrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:59
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/38; G01V1/3817; G01V1/3826; B; B63; B63B; B63B21/00; B63B21/56; B63B21/66
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
217 words
A paravane device for use with a seismic cable being towed through a body of water and serving to maintain the cable at a predetermined depth in the water during seismic operations, the improvement comprising; a paravane body having a first compartment adapted to receive a fluid at predetermined pressure therein, the pressure being calculated to correspond to the pressure of the water in which the body is to operate at some designated depth, a second compartment, the interior of said second compartment being in communication with the water in which the body is to operate, a cylinder spaced from said body and coaxial therewith and extending between said compartments, a longitudinally and axially extending piston with said cylinder, said piston comprising a front head and a rear head, said front head communicating with said second compartment and said rear head communicating with said first compartment, said piston being responsive to the superior pressure in either of said compartments, wing means movably affixed to the paravane device for imparting a climbing or diving mode thereto and, coupling means operatively connecting said wing means to said front head of said piston so that superior pressure in either of said compartments causes a correlative movement of said wing means, thereby resulting in alternating climbing or diving of the paravane.
Claim 2
Dependent Claim
217 words
A paravane device for use with a seismic cable being towed through a body of water and serving to maintain the cable at a predetermined depth in the water during seismic operations, the improvement comprising; a paravane body having a first compartment adapted to receive a fluid at predetermined pressure therein, the pressure being calculated to correspond to the pressure of the water in which the body is to operate at some designated depth, a second compartment, the interior of said second compartment being in communication with the water in which the body is to operate, a cylinder spaced from said body and coaxial therewith and extending between said compartments, a longitudinally and axially extending piston with said cylinder, said piston comprising a front head and a rear head, said front head communicating with said second compartment and said rear head communicating with said first compartment, said piston being responsive to the superior pressure in either of said compartments, wing means movably affixed to the paravane device for imparting a climbing or diving mode thereto and, coupling means operatively connecting said wing means to said front head of said piston so that superior pressure in either of said compartments causes a correlative movement of said wing means, thereby resulting in alternating climbing or diving of the paravane.
Claim 3
Dependent Claim
57 words
The paravane device of claim 1 wherein said wing means consist of at least two wing members oppositely disposed on either side of the body of the paravane, said wing members having a dihedral characteristic so that forces imparted to the body during movement are more effectively resisted, thereby allowing for more linear movement of the paravane.
Claim 4
Dependent Claim
31 words
The paravane device of claim 1 in which the coupling means includes guide means for insuring effective movement of the piston and proper transmission of the movement to the wing members.
Claim 5
Dependent Claim
33 words
The paravane device of claim 1 in which adjustable limit means are disposed within the paravane body for substantially restricting pivotal movement of the wing members beyond predetermined angles of ascent or descent.
Claim 6
Dependent Claim
31 words
The paravane device of claim 2 in which the coupling means includes guide means for insuring effective movement of the piston and proper transmission of the movement to the wing members.
Claim 7
Dependent Claim
32 words
The paravane device of claim 5 wherein adjustable limit means are disposed within the paravane body for substantially restricting pIvotal movement of the wing members beyond predetermined angles of ascent and descent.
Claim 8
Dependent Claim
60 words
The paravane device of claim 1 wherein there is included means affixed to the paravane for connecting it to the seismic cable, said connection means being characterized by race means therein which provide for rotational but nonlinear movement of the paravane with respect to the cable, thereby precluding entanglement of the cable and paravane during their movement through the water.
Claim 9
Dependent Claim
59 words
The paravane device of claim 2 wherein the dihedral wing members have a sweptback configuration so that external forces applied to the body are more effectively resisted, thereby also enhancing linear movement of the paravane at a constant depth because of the cooperative action of the sweptback dihedral wings and the rotational connection means between the paravane and cable.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |