Trigger operated tool handle switch

Details Trigger operated tool handle switch Trigger operated tool handle switch

1981-12-28

1983-04-05

Shepperd, John W.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200241, 200260, H01H 1308

Patent

active

043792146

ABSTRACT:
An electric switch mechanism for portable electric motor drive type tools having a reciprocable contact carrier and a movable electrically conductive bridging contact carried by the contact carrier for making and breaking electrical contact with coacting stationary contacts in the switch mechanism. The bridging contact has a protuberance at each point of contact with the contact carrier to ensure that such contact therebetween at each such point is always at the same spot(s) on the bridging contact when the bridging contact is reciprocated by the contact carrier in either direction.

REFERENCES:
patent: 3415966 (1968-12-01), Matthews
patent: 3594523 (1971-07-01), Frenzel
patent: 3603757 (1971-09-01), Sahrbacker
patent: 4137438 (1979-01-01), Sato et al.
patent: 4210791 (1980-07-01), Sorenson
patent: 4256942 (1981-03-01), Wied
patent: 4329555 (1982-05-01), Wied

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