Compact magnetic induction switch

Details Compact magnetic induction switch Compact magnetic induction switch

2006-06-27

2006-06-27

Barrera, Ramon M. (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

Reexamination Certificate

active

07068132

ABSTRACT:
An extremely compact low cost magnetic induction switch which may be activated by an extremely small operation force (approximately 1 g) has a movable member (2) and a coil spring (3) arranged inside a switch case (1), the spring coil (3) supporting the movable member (2), and the movable member protruding from an opening (1D) of an upper surface portion of the switch case (1). A Hall IC (4) is arranged in a switch case (1). When the upper portion is pushed, a magnet (6) fixed to the movable member (2) moves downward so that an output signal of the Hall IC (4) is changed from OFF to ON.

REFERENCES:
patent: 3673526 (1972-06-01), Brevick
patent: 3838316 (1974-09-01), Brown et al.
patent: 3873957 (1975-03-01), Wurscher et al.
patent: 4346360 (1982-08-01), Del Tufo
patent: 5057807 (1991-10-01), Longly et al.
patent: 5656982 (1997-08-01), Kurahara
patent: 07-105809 (1995-04-01), None
patent: 2003-016893 (2003-01-01), None

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