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Precision sensor for a hydraulic cylinder

  • US 7,290,476 B1
  • Filed: 11/26/2003
  • Issued: 11/06/2007
  • Est. Priority Date: 10/20/1998
  • Status: Expired due to Fees
First Claim
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1. A sensor for providing a position-related signal for a piston in relation to a cylinder, the sensor comprising:

  • a flexible connector having a first end attachable to the piston;

    a rotating element attachable to the cylinder and coupled to a second end of the flexible connector;

    a translating member cooperating with the rotating element to move along a linear path;

    a transducer disposed to sense a linear position of the translating member, wherein the transducer provides the position-related signal; and

    an electrical connector affixed in a housing wall of the cylinder, the electrical connector further comprising a body having an internal end located within the cylinder and an external end located outside the cylinder at atmospheric pressure, the body having a plurality of holes extending between the internal and the external ends, a plurality of electrical conductors sealingly affixed within the plurality of holes, and the plurality of electrical conductors having oppositely disposed external connections.

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