Torque responsive motor shutoff mechanism for fluid operated too

Details Torque responsive motor shutoff mechanism for fluid operated too Torque responsive motor shutoff mechanism for fluid operated too

1978-09-15

1980-09-23

Mackey, Robert

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

91 59, 192150, B23Q 506, B25B 23145

Patent

active

042237459

ABSTRACT:
A pneumatic torque tool includes a torque responsive mechanism which actuates a valve closure member by release of an elongated actuating rod. A movable valve seat is biased in a first position by pressure fluid supplied to the tool and upon release of the actuating rod the valve closure member engages the seat to shut off air flow to the tool motor. Upon closure of an operator actuated valve the seat is biased to a second position for resetting the actuating rod and closure member.

REFERENCES:
patent: 3498389 (1970-03-01), Tibbott
patent: 3616864 (1971-11-01), Sorensen et al.
patent: 4078618 (1978-03-01), Depagter et al.

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