Pneumatic tool having a reverse air control valve with an integr

Details Pneumatic tool having a reverse air control valve with an integr Pneumatic tool having a reverse air control valve with an integr

1975-08-25

1976-11-02

Purser, Ernest R.

Tool driving or impacting

Means to drive tool about an axis

Means to hold and relatively rotate sections of tool shaft

173169, 13762569, 251285, F01D 130

Patent

active

039891135

ABSTRACT:
A nut running air tool improved with a back and forth manually slidable control valve located between a throttle valve and an air motor, the control valve having a forward position allowing full volume air flow to the motor and maximum forward torque output, a reverse position allowing full volume air flow to the motor and maximum reverse torque output, and the control valve having integral manipulative means for adjusting its effective length so as to permit it to be moved to a third position allowing a restricted volume air flow to the motor and restricted forward torque output.

REFERENCES:
patent: 2586906 (1952-02-01), Beckett et al.
patent: 3347270 (1967-10-01), Cranage
patent: 3515225 (1970-06-01), States
patent: 3572447 (1971-03-01), Pauley
patent: 3624820 (1971-11-01), Brown
patent: 3718313 (1973-02-01), Miller
patent: 3721266 (1973-03-01), Ikebe et al.
patent: 3734459 (1973-05-01), Sauerwein et al.
patent: 3833068 (1974-08-01), Hall

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