Shuttle valve with spike-apply damping

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

1989-06-21

1990-11-27

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137 87, 303 841, G05D 1610

Patent

active

049728733

ABSTRACT:
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 connection (20), the reduced diameter bore section (24) communicates with an outlet opening (40), and the enlarged diameter bore section (26) communicates with an inlet opening (50). The second diameter section (36) of the valve member (30) includes a transverse opening (44) which communicates with a longitudinal orifice opening (46) that leads to a chamber (48) located at an end of the valve member (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 delayed 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 opening (94) so that fluid communication with the outlet opening (40) is restricted.

REFERENCES:
patent: 2970607 (1961-02-01), Peck et al.
patent: 3184211 (1965-05-01), Chapman et al.
patent: 4191210 (1980-03-01), Belart et al.
patent: 4220376 (1980-09-01), Spero
patent: 4694649 (1987-09-01), Howeth

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