Switch for detecting shift positions of automatic transmission

Details Switch for detecting shift positions of automatic transmission Switch for detecting shift positions of automatic transmission

1988-11-09

1990-04-10

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 11G, H01H 1954

Patent

active

049162632

ABSTRACT:
In a switch for detecting shift positions of an automatic transmission in which a movable contact piece is moved in a linked relationship with the shifting over of shift positions of the transmission so as to effect switching with each of stationary contact pieces corresponding to the shift positions, stationary contact pieces for monitoring are disposed in combination with the stationary contact pieces corresponding to the shift positions, thereby enabling predetermined combination signasl to be output. In the detection error checking of this invention, auxiliary contact points for monitoring are used together with a plurality of stationary contact points so that combinations of contact pieces are determined with a certain regularity which is monitored by a control unit so as to check detection results.

REFERENCES:
patent: 2908777 (1959-10-01), Brown
patent: 3939313 (1976-02-01), Hayashi et al.
patent: 4390757 (1988-06-01), Wiessner
patent: 4393467 (1983-07-01), Miki et al.

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