Two-speed offset nutrunner

Details Two-speed offset nutrunner Two-speed offset nutrunner

1977-11-21

1979-04-03

Hafer, Robert A.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

173163, B23Q 5027

Patent

active

041472195

ABSTRACT:
A two-speed pneumatically powered rotary nut runner having an auxiliary motor, and a main motor axially offset from the auxiliary motor and being drivingly connected thereto by a reduction gear cage. An output spindle is provided for engagement with a drive shank for setting of a threaded fastener, and an intermediate spindle, drivingly connected to the auxiliary motor, is coupled to the output spindle by planetary gears. A torque signal assembly is operatively associated with the main motor and is operative upon reverse rotation of the main motor to generate a pneumatic signal indicative of such reverse rotation. Reverse rotation of the main motor is caused by the auxiliary motor when it has exerted predetermined final torque upon the threaded fastener. The fact that the main motor is axially offset from the auxiliary motor, allows the rotor of the main motor to be of smaller diameter. This, coupled with reduced speed of rotation of the reduction gear cage by reason of a spur gear coupling with the main motor output shaft, provides a reduction in kinetic energy at lower torque values without errors in torque readings because of stored energy in the rotating parts.

REFERENCES:
patent: 3507173 (1970-04-01), Wallace
patent: 3517574 (1970-06-01), Glatfelter
patent: 3529513 (1970-09-01), Amtsberg
patent: 3584694 (1971-06-01), Wallace
patent: 3827510 (1974-08-01), Mazepa
patent: 3915034 (1975-10-01), Ward

Affiliated with

Also associated with

Rating

Two-speed offset nutrunner does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-speed offset nutrunner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-speed offset nutrunner will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1743172