Equal area displacement hydraulic cylinder

Details Equal area displacement hydraulic cylinder Equal area displacement hydraulic cylinder

1975-01-16

1976-04-13

Maslousky, Paul E.

Expansible chamber devices

Annular working member or annular linearly extending chamber...

Axially extending hollow stem on working member

92168, F01B 3104

Patent

active

039496503

ABSTRACT:
An equal area displacement hydraulic cylinder includes a hollow reciprocal piston rod and piston, and between said cylinder and rod, a first chamber communicating with a first port for retracting the piston rod. A rod end closes said piston rod and includes an attachment device. A hollow tube extends within the piston rod and is anchored at one end to the cylinder and terminates in a second port. A stationary piston is mounted on the other end of said tube. Said tube defines a second chamber communicating with the rod end and second piston for advancing the piston rod when said second port is pressurized. The working area of the reciprocal piston is the same as the working area of the rod end, whereby equal rod force is applied to the reciprocal piston rod in either direction.

REFERENCES:
patent: 2664859 (1954-01-01), Green
patent: 3200596 (1965-08-01), Olson et al.
patent: 3710689 (1973-01-01), Henderson

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