Creeper drive system

Details Creeper drive system Creeper drive system

1995-11-17

1997-10-21

Lopez, F. Daniel

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Condition responsive means for modifying working member...

91446, 74720, 747321, F15B 11042, F15B 1116

Patent

active

056784694

ABSTRACT:
A new creeper drive system has a hydraulic motor with first and second flow lines connected thereto. A directional valve apparatus is connected in the flow lines and the system has a flow control valve operable independently of the directional valve apparatus. The creeper drive system is particularly useful on a mobile construction machine. The machine hydraulic circuit needs but a single pump for powering the creeper drive motor and an auxiliary attachment motor and creeper direction and speed functions are independently adjustable.

REFERENCES:
patent: 4051868 (1977-10-01), Anderson
patent: 4132132 (1979-01-01), Shaffer
patent: 4250794 (1981-02-01), Haak et al.
patent: 4271723 (1981-06-01), Shaffer
patent: 4704777 (1987-11-01), Schaefer et al.
patent: 4706519 (1987-11-01), Beim
patent: 4862765 (1989-09-01), Schaefer et al.
patent: 5105675 (1992-04-01), Langford et al.

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