Cord switch having alternate insulating members

Details Cord switch having alternate insulating members Cord switch having alternate insulating members

1997-03-05

1998-09-01

Gellner, Michael L.

Electricity: circuit makers and breakers

Special application

Feeler moves into detecting contact with object

200 6141, H01H 316

Patent

active

058013474

ABSTRACT:
A cord switch includes an insulating tube, three conductive members respectively having a circular shape in cross-section and insulating members forming an insulating space therebetween. The three conductive members are disposed within the insulating tube in a triangular shape. The insulating members are formed slidably relative to the conductive members, and are disposed alternately in a longitudinal direction of the insulating tube. Thus, the three conductive members are bent by an approximately equal curvature, so that a compressive stress applied in a direction to reduce the insulating spaces formed between the conductive members becomes small, and therefore, the contact of the conductive members by bending can be prevented when the cord switch is attached at a bent portion of a window frame.

REFERENCES:
patent: 2843694 (1958-07-01), Bertaux
patent: 4532388 (1985-07-01), Sackmann et al.
patent: 4742196 (1988-05-01), Kelly
patent: 4762970 (1988-08-01), Brinsley
patent: 5296658 (1994-03-01), Kramer et al.
patent: 5459962 (1995-10-01), Bonne et al.

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