Torque wrench with alarm indicator

Details Torque wrench with alarm indicator Torque wrench with alarm indicator

1980-06-30

1982-02-09

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

81477, 7386223, B25B 23142

Patent

active

043144900

ABSTRACT:
A torque wrench is provided in which a removably attached alarm indicator produces an audible buzzing or visual indication when a pre-selected torque is applied by the torque wrench. In a preferred embodiment, an audible buzzer has a magnet in its base to facilitate removable attachment to a faceplate on the wrench, and also to make possible the use of the same audible buzzer on other torque wrenches. The audible buzzer may include an electrical circuit having a switch, battery, and buzzer all connected in series.

REFERENCES:
patent: 2682796 (1954-07-01), Larson
patent: 2771597 (1956-11-01), Freedman
patent: 2792734 (1957-05-01), Larson et al.
patent: 2867698 (1959-01-01), Gondolfo
patent: 3142177 (1964-07-01), Hanscom et al.
patent: 3304771 (1967-02-01), Ochs
patent: 4195589 (1980-04-01), Blattner

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