B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
138/57
B62D 5/10 (2006.01) B62D 6/02 (2006.01)
Patent
CA 1036899
In re application of Walter E. Marietta For MOBILE POWER STEERING SYSTEM ABSTRACT OF THE DISCLOSURE A mobile power steering system for a log skidder, a fork lift truck or like vehicle including a steering cylinder, a steering control valve defining a variable area orifice, a pressure compensated variable displacement pump having a modulator which senses the pressure drop across such variable area orifice to operate the fluid pressure actuated pump displacement varying piston, and a remote source of fluid pressure such as a ground driven fixed displacement pump which varies the spring load on the modulator to provide for maximum steering response or ratio at zero or slow ground speed of the vehicle and a progressively decreasing steering ratio at progressively increasing ground speed of the vehicle.
234110
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