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X-Y position controller having axially-inclined transducer members

  • US 4,628,755 A
  • Filed: 03/25/1985
  • Issued: 12/16/1986
  • Est. Priority Date: 03/25/1985
  • Status: Expired due to Term
First Claim
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1. In an X-Y position controller--i.e., a "mouse" (10)--having orthogonal transducer assemblies (13X, 13Y), each assembly sensing a component of mouse motion over a substantially planar surface (16), the assemblies being suitably supported on the mouse and each comprising a shaft (12) rotatable within a journal bearing (28), the shaft having affixed thereon a drive element (26) and a transducer element (14) with transducing indicia (18) located at a particular radial distance (r) from the shaft, the drive element being adapted to contact (36) the planar surface (16) and through an effective radius (R) to rotate the shaft upon a motion of the mouse having a component sensed by that assembly;

  • the improvement comprising combination therewith of an inclined support (29) for at least one said bearing in said mouse, said support holding said bearing at a predetermined angle less than 90°

    yet non-parallel relative to said planar surface, resultant inclination of the transducer shaft thereby permitting said particular radial distance (r) of the transducing indicia to be at least as great as said effective radius (R) of the drive element.

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