Hydraulic torque wrench

Details Hydraulic torque wrench Hydraulic torque wrench

1987-07-29

1988-11-22

Smith, James G.

Tools

Including tool driving by impact delivering component or...

Structurally constrained to arcuate movement

464 25, 173 935, B25B 1900

Patent

active

047856939

ABSTRACT:
A communication passageway is formed to extend from the end surface of a cover member opposed to the axial end surface of the shoulder portion of a main shaft and through the main shaft so that in only one of the two particular phase conditions obtained per revolution of an oil cylinder, it establishes the communication between high and low pressure chambers to thereby equalize their pressures.
The communication passageway establishes the communication between high and low pressure chambers in only one of the two particular phase conditions obtained per revolution of the oil cylinder and makes it possible to produce percussion torque in the other particular phase condition.

REFERENCES:
patent: 4553948 (1985-11-01), Tatsuno

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