Motors: expansible chamber type – With motive fluid valve – Independent control of bypass between opposed working chambers
Patent
1996-02-20
1998-03-17
Lopez, F. Daniel
Motors: expansible chamber type
With motive fluid valve
Independent control of bypass between opposed working chambers
F15B 11024
Patent
active
057274444
ABSTRACT:
This power steering cylinder assembly, may replace the cylinder assembly in some present power steering systems, or may be used in a new system. When the oil pressure drops or disappears, in some of the power steering systems in use today, manual steering must be used. The piston is then pushed back and forth in a fluid filled cylinder. The oil in the chamber in front of the piston, must then be pushed through a small opening back to reservoir, and the oil in the chamber in back of the piston must be drawn from the pump. This results in an additional resistance load on the piston. By using the new cylinder assembly when the pressure drops or disappears, the oil will readily circulate from the chamber in front of the piston to the chamber in back of the piston, thereby relieving much of the resistance of the piston as it is being pushed back and forth by manual steering.
REFERENCES:
patent: 963091 (1910-07-01), Sundh
patent: 1009664 (1911-11-01), Hefty et al.
patent: 2069214 (1937-02-01), Carlson
patent: 2199681 (1940-05-01), Timm
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