Lock-on/lock-off tool switch

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

2005-10-25

2005-10-25

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator blocking device

C200S522000, C200S321000, C200S332200

Reexamination Certificate

active

06958455

ABSTRACT:
A trigger mechanism for a power tool includes a chassis; a trigger mounted to the chassis for movement between ON and OFF positions; an electrical switch mounted to the chassis for activation by movement of the trigger between the ON and OFF positions to close and open an electrical circuit; and a locking mechanism comprising a lock button and a latch, user-depression of the lock button causing deflection of the latch to enable depression of the trigger in the OFF position, the pushbutton retaining the latch deflected in the OFF position of the trigger until further depression of the trigger beyond the ON position releases the pushbutton from the latch to enable release of the trigger for return to the OFF position.

REFERENCES:
patent: 3953696 (1976-04-01), Reimann et al.
patent: 4097705 (1978-06-01), Harvell
patent: 4180716 (1979-12-01), Suzuki
patent: 4271342 (1981-06-01), Sistare
patent: 4934494 (1990-06-01), Fushiya et al.
patent: 5012057 (1991-04-01), Inuyama
patent: 6555773 (2003-04-01), Broghammer et al.
patent: 6812425 (2004-11-01), Wong

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