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Heavy lift chair

  • US 20060076813A1
  • Filed: 10/13/2004
  • Published: 04/13/2006
  • Est. Priority Date: 10/13/2004
  • Status: Active Grant
First Claim
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1. A power-assisted heavy lift chair comprising:

  • a base assembly;

    a chair frame supported on the base assembly;

    a lift mechanism that communicates with the base assembly and the chair frame, and that is operable to actuate the chair frame between first and second positions;

    a transformer that receives a first voltage from a power supply and is operable to output a second voltage; and

    an electric motor that draws current from the transformer according to a load on the chair frame, receives the second voltage, and provides rotational power to the lift mechanism at a first rate according to the second voltage, wherein the motor operates at the first rate independently of the current and the transformer provides the second voltage at a constant value independently of the current.

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