Steering control unit with flow amplification for unequal area c

Details Steering control unit with flow amplification for unequal area c Steering control unit with flow amplification for unequal area c

1995-11-22

1997-06-17

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

60384, 91467, F15B 1304

Patent

active

056388640

ABSTRACT:
A fluid controller (15) for use with an unequal area cylinder (25) having a rod end area A and a head end area B. The controller valving (27) includes, in one embodiment, a flow amplification path (101) for only one direction of steering. In another embodiment, the controller valving (27) includes flow amplification in both directions of steering, but with the ratios being different. In either case, the ratio of flow to the head end to flow to the rod end equals the ratio B/A, whereby the fluid controller requires the same number of turns, lock-to-lock, for either direction of steering.

REFERENCES:
patent: 4558720 (1985-12-01), Larson et al.
patent: 4759182 (1988-07-01), Haarstad
patent: 4958493 (1990-09-01), Schutten

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