Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1991-03-15
1991-08-13
Cohan, Alan
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137117, G05D 701
Patent
active
050388223
ABSTRACT:
A flow rate control valving apparatus includes a housing, a plug connector, and a tubular member. The housing has a valve bore in which a spool is movably housed. The plug connector is provided opposite to one end portion of the spool to form a high-pressure chamber for receiving a pressurized fluid from a pump between the spool and the plug connector. A small-diameter opening is formed in a portion of the plug connector opposite to the high-pressure chamber, and a supply passage connected to the small-diameter opening is formed in the plug connector to supply the pressurized fluid to a fluid system. The tubular member is fixed at a position in the supply passage in the plug connector, at which the tubular member engages with the distal end of an adjusting rod portion of the spool to regulate the movement of the spool toward the high-pressure chamber, and serves as a stopper for regulating the movement of the spool. A small hole portion communicating with the supply passage is formed in the tubular member, and an internal passage of the tubular member communicates with the small hole portion and the pressure guide passage extending to the other end portion of the spool.
REFERENCES:
patent: 2703631 (1955-03-01), Hupp
patent: 3314495 (1967-04-01), Clark et al.
patent: 3726302 (1973-04-01), Lawsing
patent: 4546786 (1985-10-01), Hoike
Cohan Alan
Jidosha Kiki Co. Ltd.
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