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Programmable speed selector for a Reeves drive

  • US 5,352,960 A
  • Filed: 02/11/1993
  • Issued: 10/04/1994
  • Est. Priority Date: 02/11/1993
  • Status: Expired due to Fees
First Claim
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1. A programmable speed selector for a Reeves type variable speed transmission unit having a worm screw which is rotatable in clockwise and counterclockwise directions for adjusting a speed setting thereof, said programmable speed selector comprising:

  • reversible motor means having a drive shaft which is operable for clockwise and counterclockwise rotation, said drive shaft being coupled to said worm screw for rotation thereof;

    power means for energizing said motor means;

    means for selectively energizing said motor means for clockwise or counterclockwise rotation of said drive shaft to a plurality of preselected rotational positions, said preselected rotational positions corresponding to a plurality of preselected speed settings of said reeves type transmission unit;

    means for sensing said rotational positions of said drive shaft, said sensing means sensing a direction of rotation of said drive shaft and a number of full or partial revolutions of said drive shaft with respect to a datum rotational position;

    memory means for storing said plurality of rotational positions;

    input means for inputting said rotational positions to said memory means and for selecting one of said stored rotational positions from said memory means; and

    controller means for controlling said motor means to automatically rotate said drive shaft to said selected rotational position in response to said input means, thereby selecting a speed of said reeves type transmission unit.

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