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Onboard trailer weighing system above a kingpin

  • US 10,094,703 B2
  • Filed: 04/29/2016
  • Issued: 10/09/2018
  • Est. Priority Date: 04/29/2016
  • Status: Active Grant
First Claim
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1. A trailer comprising:

  • a chassis defining a pair of cross members, each of the pair of cross members positioned substantially orthogonal to the longitudinal direction of the trailer and fixed in position with respect to the chassis;

    a floating coupling apparatus coupled to the chassis between a first cross member and a second cross member of the pair of cross members, the floating coupling apparatus comprising;

    a fixed rail suspended between and attached to each of the first cross member and the second cross member of the chassis;

    a floating rail extending from a position proximate to the first cross member to a position proximate to the second cross member, the floating rail configured to move in a vertical direction relative to the fixed rail, the floating rail positioned adjacent to the fixed rail in a horizontal direction; and

    a fifth wheel plate coupled to the floating rail;

    a kingpin attached to the fifth wheel plate of the floating coupling apparatus, a portion of the fifth wheel plate proximate to the kingpin fixed in position with respect to the floating rail;

    a displacement-sensing device positioned between an attachment portion on the chassis and an attachment portion on the floating coupling apparatus, the displacement-sensing device configured to sense a load acting on the displacement-sensing device; and

    a fluid system in fluid communication with the displacement-sensing device.

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