F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
F15B 9/08 (2006.01) B62D 5/083 (2006.01)
Patent
CA 2046924
2046924 9011452 PCTABS00002 A four-way open-center rotary control valve (210, 260) is provided which features internally generated hydraulic reaction torque. The hydraulic reaction torque is generated between inner (212, 262) and outer valve members (214, 264) having multiple inlet (220, 222) and return control orifices (232, 234) formed at differing radii. The return control orifices are formed at larger radii than the inlet control orifices - thereby resulting in expanded values of radially disposed area on either side of ridges which partially form the return control orifices. Thus, differential output pressure present in first and second output zones, which are alternately disposed between pairs of the inlet control orifices and pairs of the return control orifices, generates the hydraulic reaction torque via the product of the differential pressure, the expanded values of the radially disposed area and effective radius of the radially disposed area. Generally, the first and second output zones are coupled to either side of a double acting utilization device via controlled orifice flow restrictors (488), also of the present invention. The controlled orifice flow restrictors comprise an oversize orifice (494) which is selectively filled by a spring-loaded contoured valve member (496).
Macrae & Co.
Phillips Edward H.
Techco Corporation
LandOfFree
Four-way valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Four-way valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Four-way valve will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1353536