Motors: expansible chamber type – With motive fluid valve – For double-acting motor
Patent
1976-02-09
1977-12-20
Cohen, Irwin C.
Motors: expansible chamber type
With motive fluid valve
For double-acting motor
91375A, 92163, 92166, 92167, F15B 1304
Patent
active
040634906
ABSTRACT:
A rack and pinion steering gear mechanism for use with the dirigible wheels of a road vehicle comprising a steering gear pinion adapted to be connected to a vehicle steering linkage, a power rack engageable with the pinion and adapted for reciprocating linear motion, said rack including a power piston mounted within a power cylinder which define a pair of opposed pressure chambers, a steering shaft connected yieldably to the pinion by a torsion shaft, fluid pressure control valve means including relatively displaceable parts forming in part fluid connections between a pressure source and each of said pressure chambers, one valve part being connected to the pinion and the other part being connected to the steering shaft whereby distribution of working pressure to the pressure chambers is dependent upon the direction of torque applied to the steering shaft, the magnitude of the pressure buildup in the pressure chambers being proportional to the degree of displacement of the steering shaft relative to the pinion, the pressure chamber being defined by a cylinder and a piston carried by the rack within the cylinder and the pressure passages communicating with the pressure chamber being defined by an outer sleeve surrounding the cylinder and an inner sleeve within the cylinder, the bearing for the rack at the outboard end of the cylinder and the inboard end of the inner sleeve permitting articulation and misalignment with respect to the cylinder.
REFERENCES:
patent: 380488 (1888-04-01), Jarvis
patent: 1747968 (1930-02-01), Braren
patent: 2858802 (1958-11-01), Parsons et al.
patent: 3005669 (1961-10-01), Nunnemacher
patent: 3037485 (1962-06-01), Adams
patent: 3145626 (1964-08-01), Vickers et al.
patent: 3624802 (1971-11-01), Ripert
patent: 3680443 (1972-08-01), Jenvey
patent: 3746045 (1973-07-01), Bunker et al.
patent: 3817155 (1974-06-01), Walter
Cohen Irwin C.
Ford Motor Company
Harrington Donald J.
Zerschling Keith L.
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