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Articulating cage

  • US 8,561,239 B2
  • Filed: 08/17/2011
  • Issued: 10/22/2013
  • Est. Priority Date: 08/17/2010
  • Status: Active Grant
First Claim
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1. An apparatus configured to raise and lower an articulating cage with respect to a fixed structure, the apparatus comprising:

  • a pair of support structures configured to be affixed to the fixed structure, wherein at least one of the pair of support structures comprises a spring;

    first and second lifting arm arrangements, each of said lifting arm arrangements comprising upper and lower lifting arms having;

    a first end pivotally connected to a respective one of the pair of support structures such that said upper and lower lifting arms of said first lifting arm arrangement are pivotally connected to a first support structure of said pair of support structures and said upper and lower lifting arms of said second lifting arm arrangement are pivotally connected to a second support structure of said pair of support structures; and

    a second end pivotally connected to the articulating cage so as to allow the second end of the upper and lower lifting arms to pivot relative to a floor of the articulating cage;

    a load device connected to the spring at one end and proximate to the second end of the first lifting arm arrangement at the other end; and

    a hoist operatively connected to the load device to cause movement of the load device in order to raise and lower said articulating cage.

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