Lock-on/lock-off switch for power tool

Details Lock-on/lock-off switch for power tool Lock-on/lock-off switch for power tool

1988-08-01

1989-11-07

Pellinen, A. D.

Electricity: circuit makers and breakers

Special application

Actuated concurrently with operation or use of art device

200505, 310 50, H01H 906

Patent

active

048794384

ABSTRACT:
A powered tool controlled by an actuating lever is provided with a simplified structure combining lock-off and lock-on functions. A trigger is mounted on the actuating lever and is pivoted about an axis parallel to a pivot axis for the actuating lever. The trigger is displaceable in a direction substantially parallel to the direction of displacement of the actuating lever, reducing the dexterity required of an operator to permit operation of the actuating lever. A hooked lever element extends from the trigger and a blocking device, which may be a post or a ribbed structure, projects from the tool housing. The hooked lever and blocking device cooperate to (1) abut, to prevent actuation of the motor unless the trigger is first operated, and (2) lock the actuating lever in an operated state upon subsequent release of the trigger.

REFERENCES:
patent: 4192982 (1980-03-01), Schnizler, Jr. et al.
patent: 4376240 (1983-03-01), Stuart

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