Clutch mechanism for screw tightening machine

Details Clutch mechanism for screw tightening machine Clutch mechanism for screw tightening machine

1997-07-14

1999-02-02

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

192 56, B25B 23157

Patent

active

058650768

ABSTRACT:
A clutch mechanism for a screw tightening machine having a clutchment and a main shaft, the clutchment interlocking with a screw tightening machine driving mechanism, the main shaft holding a screw tightening driver bit, the clutchment and the main shaft opposing each other along the center of the driver bit with the main shaft being urged with a spring to move away from the clutchment, so that the main shaft is engaged with or released from the clutchment, the clutch mechanism includes: a plurality of first clutch claws around the circumference subtending the center of the shaft, the first clutch claws being projecting on an end of the main shaft; second clutch claws meshable with the first clutch claws, the second clutch claws being arranged on the clutchment to make a predetermined amount of pivotting about an axis from such a position as to squarely oppose the first clutch claws, the axis being perpendicular to the center of the shaft, the second clutch claws being always urged in the squarely opposed position, wherein the clutchment is engaged with the main shaft by having the first clutch claws meshed with the second clutch claws, and the clutchment is released from the main shaft by causing the first clutch claws to move away from the second clutch claws.

REFERENCES:
patent: 2167749 (1939-08-01), Grohn

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