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Multi-directional controller having resiliently biased cam and cam follower for tactile feedback

  • US 4,733,214 A
  • Filed: 11/18/1986
  • Issued: 03/22/1988
  • Est. Priority Date: 05/23/1983
  • Status: Expired due to Fees
First Claim
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1. A multi-directional controller comprising a reference frame and a carrier, means for guiding the carrier with respect to the reference frame in first and second generally orthogoal directios while restraining motion of the carrier with respect to the reference frame in a third direction generally orthogonal to said first and second diectios, manipulator means connected to the carrier for manually positioning the carrier with respect to the reference frame in the first and second directions, and means for sensing the displacement of the carrier with respect to the reference frame along said first and second directions,wherein said multi-directional controller further comprises cam and cam follower means disposed between said carrier and said reference frame for providing forces between said carrier and said reference frame which are a predetermined function of the displacement of said carrier with respect to said frame in each of said first and second orthogonal directions, and wherein said cam and cam follower means includs a cam follower and a cam, said cam follower engaging said cam and travelling in two orthogonal directions over a two-dimensional regin of said cam as said carrier is manually positioned with respect to said reference frame over a two-dimensional region of trave defined by said first and second orthogonal directions, and said two-dimensional region of said cam is programmed to provide a desired reaction force as a predetermined function of position of said carrier with respect to said frame.

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