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Convertible normally closed/normally open switch with cam actuator

  • US 4,540,859 A
  • Filed: 08/27/1984
  • Issued: 09/10/1985
  • Est. Priority Date: 07/16/1982
  • Status: Expired due to Fees
First Claim
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1. An electric switching device having a contact system including a movable contact bridge and two stationary contact bars cooperating with the bridge to close or open an electric circuit, comprising means for converting the device into a circuit breaker or a circuit maker, said converting means including a swingable arm which at one side thereof engages said contact bridge and at the other side is provided with a cam follower, a shiftable cam track member engaging the cam follower, means for guiding said cam track member along a straight path between a rest position and an activated position to displace via said swingable arm the contact bridge relative to said stationary contact bars, and means for adjusting the engagement between said cam follower and said cam track member so as to establish in the rest position of the latter, an open or closed switching condition of the device.

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