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Switch for sensing a preset position of a throttle valve

  • US 4,411,154 A
  • Filed: 01/18/1982
  • Issued: 10/25/1983
  • Est. Priority Date: 02/20/1981
  • Status: Expired due to Fees
First Claim
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1. A switch for sensing a preset position of a throttle valve in an internal combustion engine, comprising:

  • (a) a lever secured to said throttle valve for movement through a predetermined path corresponding to movement of said throttle valve;

    (a) a stationary casing disposed in said path such that said lever encounters said casing when said lever moves toward the casing, whereby the throttle lever is stopped by encountering the casing;

    (c) a plunger movably disposed in said casing;

    (d) first means for resiliently holding said plunger normally in a position in which part of the plunger projects from the casing in said path whereby when the lever moves toward the casing and the plunger, the lever encounters the plunger first and the casing second and moves the plunger until the lever encounters the casing and is stopped by said casing;

    (e) a first contact supported on the casing;

    (f) a second contact and second means for movably supporting said second contact on the plunger in opposed relation to said first contact for movement with said plunger toward said first contact, such that when said lever moves toward the casing and the plunger, the second contact engages the first contact before the lever encounters the casing; and

    wherein(g) said second means includes means for resiliently holding the second contact normally in a position fixed with respect to the plunger in which the second contact is separated from the first contact when said plunger is held in its normal position and permitting said plunger to move slightly relative to said second contact after said first and second contacts have engaged.

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