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Multiple degree of freedom damped hand controls

  • US 5,107,080 A
  • Filed: 12/01/1989
  • Issued: 04/21/1992
  • Est. Priority Date: 12/01/1989
  • Status: Expired due to Fees
First Claim
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1. A hand control device capable of damping motions during operation by a user, the device comprising:

  • a chamber filled with a viscous fluid;

    a transmission assembly comprising a first inner shaft coupled to a second outer shaft and concentric with each other, said first shaft having a handle to be held by the user and said second shaft being at least partially disposed within said fluid of said chamber;

    drag means coupled to said second shaft of said transmission assembly and disposed within said fluid for damping motion of said transmission assembly; and

    position-sensing means disposed about the transmission assembly for sensing the position of said transmission assembly relative to a defined reference frame and for generating electrical signals indicative of said position, said position-sensing means being activated by said first shaft during operation to generate electrical signals when said shaft is displaced from said reference frame.

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