Shuttle valve with spike-apply damping

Details Shuttle valve with spike-apply damping Shuttle valve with spike-apply damping

B - Operations, Transporting

60

T

303/73

B60T 8/34 (2006.01) B60T 8/42 (2006.01) B60T 8/50 (2006.01) B60T 11/34 (2006.01)

Patent

CA 2016268

ABSTRACT OF THE DISCLOSURE The shuttle valve (10) has a valve member (30) which includes first (32) and second (36) diameter sections disposed within small diameter (22), reduced diameter (24), and enlarged diameter (26) bore sections of a stepped bore (14) located in a valve body (12). The small diameter bore section (22) communicates with a brake feedback line con- nection (20), the reduced diameter bore section (24) com- municates with an outlet opening (40), and the enlarged diameter bore section (26) communicates with an inlet open- ing (50). The second diameter section (36) of the valve member (30) includes a transverse opening (44) which com- municates with a longitudinal orifice opening (46) that leads to a chamber (48) located at an end of the valve mem- ber (30). Seals (60, 70) are disposed about the first and second diameter sections (32, 36), and the valve member (30) biased by a Spring (80) toward an at-rest position. Located about the first diameter section (32) of the valve member (30) is a freely movable orifice member (90) which includes a radial orifice opening (94) at one surface thereof. The sudden communication of high fluid pressure through the inlet opening (50) results in a slightly de- layed displacement of the valve member (30) and movable orifice member (90), and the displacement of the valve member (30) and movable orifice member (90) then causing fluid to be communicated through the movable orifice open- ing (94) so that fluid communication with the outlet opening (40) is restricted.

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