Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1994-11-15
1997-04-08
Gellner, Michael L.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
H01H 2504
Patent
active
056190212
ABSTRACT:
A pressing operation while an operation lever is tilted is inhibited by causing an enlarged portion of the operation lever to butt against a stopper. A tilting operation while an operation lever is pressed is inhibited by causing the enlarged portion to butt against the stopper. Therefore, the two operations can not be concurrently performed so that a set switch and a select switch are inhibited from being simultaneously turned on. Furthermore, the operation lever is supported in a tiltable manner by forming support shafts and rotation shafts whose axes perpendicularly intersect each other. Even when foreign substances are trapped in rotation portions of the support shafts and the rotation shafts, therefore, there is little fear that the foreign substances will remain trapped between the mating or contacting portions, thereby ensuring that the operation lever can be tilted smoothly and returned to the neutral position. In addition, a switch matrix ensures that signals from adjacent switches are accurately processed. A switch element also ensures simultaneous activation of circuits to avoid transient signaling errors.
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Barratt et al., "Joystick Controller for Pager Applications", Motorola Technical Developments, Feb. 1994, pp. 118-119.
Taniguchi Yoshikazu
Yamamoto Tetsuo
Friedhofer Michael A.
Gellner Michael L.
Sumitomo Wiring Systems Ltd.
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