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Bench top dust collector

  • US 5,655,253 A
  • Filed: 05/13/1996
  • Issued: 08/12/1997
  • Est. Priority Date: 05/13/1996
  • Status: Expired due to Term
First Claim
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1. A self-contained portable device for collecting dust particulate from dental appliances or the like comprising:

  • a housing having a front, a rear, a top, a bottom, and at least partially open sides, the open sides having openings of sufficient size to receive an operator'"'"'s hands therethrough;

    a hollow work chamber disposed at the front of the housing;

    a base plate at the bottom of the hollow work chamber;

    a vacuum duct in the base plate;

    vacuum means fluidly connected to the vacuum duct to draw a vacuum at the vacuum duct in the base plate;

    a filter bag disposed within the housing for collecting and containing particulate drawn from the vacuum duct;

    light means to illuminate the work chamber;

    sensor means for detecting the presence of the operator'"'"'s hands within the hollow work chamber, the sensor means sending an electrical signal responsive to the presence of the operator'"'"'s hands in the work chamber;

    means responsive to the electrical signal to energize the light and the vacuum means;

    whereby when the operators hands are inserted into the chamber, the sensor means detects their presence, energizing the light and vacuum means, thus drawing a vacuum at the vacuum duct to remove dust particulate from the work chamber.

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