Motors: expansible chamber type – Working member position responsive motive fluid control – Exhaust control
Patent
1975-03-06
1976-07-13
Maslousky, Paul E.
Motors: expansible chamber type
Working member position responsive motive fluid control
Exhaust control
91 31, 92 79, 92125, F15B 2104, F15B 1522, F01C 900
Patent
active
039687317
ABSTRACT:
A fluid motor for a backhoe or the like. A hollow motor cylinder is provided with upper and lower end plates to define a motor chamber through which a generally vertical shaft extends. The shaft is journalled for relative rotation and a first vane is located within the motor chamber and is secured to the shaft and sealingly engages the cylinder and the end plates. A second vane is located within the motor chamber and is secured to the cylinder and sealingly engages the shaft. Ports of a first set are interconnected for continual fluid flow between each other and open into the chamber adjacent one side of the second vane and include at least one port in each of the end plates. Ports of a second set are interconnected to each other and open into the chamber adjacent the other side of the second vane and include at least one port in each of the end plates. As a consequence, sediment in a hydraulic system may be discharged from the motor through the lower ports, while air or other gases in the system may be purged from the motor through the upper ports.
REFERENCES:
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patent: 2798462 (1957-07-01), Ludwig et al.
patent: 2902009 (1959-09-01), Ludwig et al.
patent: 3120897 (1964-02-01), Auwelaer et al.
patent: 3174635 (1965-03-01), Auwelaer et al.
patent: 3207048 (1965-09-01), Rumsey
patent: 3267815 (1966-08-01), Ortman et al.
Caterpillar Tractor Co.
Maslousky Paul E.
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