Fluid handling – Systems – Multi-way valve unit
Patent
1982-11-17
1984-12-11
Cohan, Alan
Fluid handling
Systems
Multi-way valve unit
91375A, 91375R, F15B 900
Patent
active
044872259
ABSTRACT:
A power assisted steering gear has an internal valve member 10 capable of restricted rotation (in response to a steering input) relative to a valve sleeve 11 integral with a pinion 4 driving a rack bar 3. Control ports 13, 14 between the valve members 10 and 11 are adjusted in response to relative rotation between those members to control fluid flow to power assistance means. The valve members are rotationally biased relative to each other and to a neutral condition of the control ports by a C-shaped spring 21. The valve sleeve 11 and pinion 4 are axially restrained by a bearing 5. The valve member 10 is axially restrained by a compact arrangement of a rod 27 located in a co-axial bore 27a of the valve member 10 and secured by pin 21 for rotation with that valve member and carried by bearings 28 for rotation in the pinion 4. Bearing 28 restrains the rod 27 from axial displacement relative to the pinion. An end 30 of the rod 27 is slotted and in axial alignment with passage 32 in the pinion through which the rod can be rotated to facilitate its rotational orientation for alignment with the pin 21 during assembly of the gear.
REFERENCES:
patent: 3145626 (1964-08-01), Vickers
patent: 3296939 (1967-01-01), Eddy
patent: 4378030 (1983-03-01), Duffy
patent: 4428399 (1984-01-01), Masuda
Cam Gears Limited
Cohan Alan
LandOfFree
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