Pneumatic screwdriver with torque responsive shut-off

Details Pneumatic screwdriver with torque responsive shut-off Pneumatic screwdriver with torque responsive shut-off

B - Operations, Transporting

25

B

81/23

B25B 23/145 (2006.01) B25B 21/00 (2006.01)

Patent

CA 1084312

ABSTRACT OF THE DISCLOSURE A pneumatically powered tool for setting of threaded fasteners, having an axially movable clutch assembly and a fast- ener drive spindle both of which are coupled for rotary motion to effect fastener run-up. Upon attainment of a predetermined torque load on the drive spindle, the clutch assembly and drive spindle are intermittently uncoupled by action of a ball being forced up a cam ramp, whereupon a latch pin is activated to initiate seating of an air inlet valve, thus terminating tool operation.

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