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Cursor control device construction

  • US 5,661,504 A
  • Filed: 12/06/1995
  • Issued: 08/26/1997
  • Est. Priority Date: 12/06/1995
  • Status: Expired due to Fees
First Claim
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1. A cursor control device construction comprising:

  • a body having a cap with a plurality of push buttons locked to an upper side thereof, said body accommodating therein a circuit board and having a circular hole in a bottom side thereof for accommodating a ball, said body further having a pair of encoders, each of said encoders including a wheel with a spindle having one end thereof fixedly provided with a roller, a securing seat being disposed below said wheel, said securing seat having a plurality of plate-like mountings for supporting said spindle of said wheel, said mountings further supporting an idle wheel at a position lower than that of said roller, said idle wheel being disposed intermediate said roller and said ball and being in contact with both of said roller and said ball for transmitting rolling actions of said ball to said roller, a light source and a sensor being respectively disposed on both sides of said wheel and being secured in a couple of positioning slots formed in said securing seat, which has a plurality of hook-like lugs and a positioning pin projecting from a bottom side thereof, said lugs and said positioning pin being inserted into a plurality of insert holes and a positioning hole correspondingly formed in said circuit board after said wheel, said light source and said sensor are positioned on said securing seat.

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