US3583159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control devices
Assignee: Bennes Marrel SA
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Filing: 1968-02-12
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Granted: 1971-06-08
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Expires: 1988-02-12
Abstract
Abstract A remote hydraulic control device with compact control box comprising a pair of cylinder and piston jacks mounted in the box, which is filled with oil. Each cylinder has two pipes, one at each end, the pipes leading to a remote double-acting receiver. There is a hand lever on the box, with a neutral position. Movement of the lever in one direction from the neutral position operates one piston and in the other direction operates the other position. Each piston has a valve so that each cylinder is constantly full of oil.
Inventors
- 👤 Jean Paulet
- 👤 Jean Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:44
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
148 words
In a remote hydraulic control device comprising at least two pair of emitter jacks; an oil-filled casing with each pair of emitter jacks mounted in a side by side relationship within said casing; a pushrod operatively connected to each jack in said casing; a cam means including cams keyed on rotatable shafts for exerting force on each pushrod; a control means operatively connected with sAid casing for actuating said emitter jacks including a reference plate for each cam and a rod engageable with each reference plate; guide means for controlling the actuation of said rod with one or more of said reference plates to permit the operation of one or more than one emitter jack at a single operation of said control means; and a hydraulic receiver means including hydraulic receiver units operatively connected with each emitter jack by fluid conduits to hydraulically control said hydraulic receiver means.
Claim 2
Dependent Claim
148 words
In a remote hydraulic control device comprising at least two pair of emitter jacks; an oil-filled casing with each pair of emitter jacks mounted in a side by side relationship within said casing; a pushrod operatively connected to each jack in said casing; a cam means including cams keyed on rotatable shafts for exerting force on each pushrod; a control means operatively connected with sAid casing for actuating said emitter jacks including a reference plate for each cam and a rod engageable with each reference plate; guide means for controlling the actuation of said rod with one or more of said reference plates to permit the operation of one or more than one emitter jack at a single operation of said control means; and a hydraulic receiver means including hydraulic receiver units operatively connected with each emitter jack by fluid conduits to hydraulically control said hydraulic receiver means.
Claim 3
Dependent Claim
28 words
In a hydraulic control device as recited in claim 1 where said oil-filled casing is pressure sealed and includes a deformable diaphragm means including a compressed gas cushion.
Claim 4
Dependent Claim
36 words
In a hydraulic control device as recited in claim 1 further including a hand lever where said reference plates include a square opening and said rod is square-shaped, the hand lever connected to said square rod.
Claim 5
Dependent Claim
82 words
In a remote hydraulic control as recited in claim 1, each emitter jack comprises a free piston defining an axial perforation, a fixed cylinder in which said piston slides oil-tight, a spring urging said piston against a thrust collar of said cylinder, an annular seal around one end of the perforation of said piston, a plunger piston connected to one of said push rods and a return spring for said piston which is located so as to cooperate with said annular seal.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |