Portable pneumatic nut running tool having air shut-off controls

Details Portable pneumatic nut running tool having air shut-off controls Portable pneumatic nut running tool having air shut-off controls

1977-04-29

1978-10-17

Husar, C. J.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Centrifugally initiated valve controlling fluid flow in...

81 524R, 173 12, 192 54, F01B 2500, B23B 4504

Patent

active

041206045

ABSTRACT:
A hand held pneumatic nut running tool including an air vane rotary motor, manipulative valving for initially starting air flow to the motor and then terminating such flow, and an air flow shut-off control valve responsive to acceleration of the motor after start-up and before said termination of air flow to continue air flow to the motor, the control valve being further responsive to a predetermined level of deceleration of the motor to discontinue air flow to the motor.

REFERENCES:
patent: 2246910 (1941-06-01), Amtsberg
patent: 3608647 (1971-09-01), Borries
patent: 3785442 (1974-01-01), Amtsberg
patent: 3791458 (1974-02-01), Wallace
patent: 3821991 (1974-07-01), Alexander
patent: 3904305 (1975-09-01), Boyd
patent: 3970151 (1976-07-01), Workman, Jr.
patent: 3987692 (1976-10-01), Lesner et al.

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