Ratchet nutrunner with audible torque signal

Details Ratchet nutrunner with audible torque signal Ratchet nutrunner with audible torque signal

1981-09-24

1983-09-13

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

81 5711, B25B 23142

Patent

active

044035322

ABSTRACT:
A pneumatically powered hand-held torque wrench having a handle portion which can be forced out of axial alignment with a work engaging end of the tool by manual force applied to the handle portion of the tool, whereby an enclosed torque tube will operate through a cam arrangement to cause the inner surface of the handle portion to move with a snap action into contact with one of the cams in the cam arrangement to cause an audible signal which will indicate to the operator that a predetermined torque has been applied to the set fastener. The snap action is accompanied by a slight slipping action which is sensed by the tool operator.

REFERENCES:
patent: 2663209 (1953-12-01), Gummere et al.
patent: 2740507 (1956-04-01), Shaff
patent: 3939924 (1976-02-01), Grabovae
patent: 4265108 (1981-05-01), Wallace et al.

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