Push button switch

Details Push button switch Push button switch

2005-04-19

2005-04-19

Gray, David M. (Department: 2851)

Photography

Camera detail

Shutter

C396S543000, C200S345000

Reexamination Certificate

active

06880989

ABSTRACT:
A push button switch includes a push button positioned on a switch base; a biasing member positioned between the push button and the switch base; a switching element having a press portion, the switching element being provided at a position offset from an axis of the push button; a press projection and a rocking projection which are formed on the push button on opposite sides of the center thereof; and a fulcrum formed on the switch base to be associated with the rocking projection. The rocking projection and the fulcrum are disengaged from each other when the push button is in a non-depressed position. The rocking projection comes into contact with the fulcrum when the push button is half depressed. The push button turns about the fulcrum when the push button is further depressed following the half depression of the push button.

REFERENCES:
patent: 3186319 (1965-06-01), Hochstein
patent: 5339124 (1994-08-01), Harms
patent: 6102585 (2000-08-01), Kataoka et al.
patent: 6504115 (2003-01-01), Nakai
patent: 2001-290200 (2001-10-01), None

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