×

Brush with pneumatically discharged treatment material

  • US 4,319,852 A
  • Filed: 06/16/1980
  • Issued: 03/16/1982
  • Est. Priority Date: 06/16/1980
  • Status: Expired due to Term
First Claim
Patent Images

1. A material dispensing brush including a handle and a bristle-retaining plate associated therewith, said bristle-retaining plate having a plurality of bristles fixedly positioned thereon, said dispensing brush further including:

  • a rigid shell having its edges fixedly attached to the bristle-retaining plate and having an interior defining a material holding chamber means for holding treatment material to be dispensed;

    a deformable hollow resilient member separately communicating with the holding chamber means through an elongated tube means connecting to a wall of the rigid shell and to a wall of the holding chamber means, the deformable resilient member having a pressure relief hole in a surface of the deformable resilient member and defining therewith a pressure relief means and being positioned substantially adjacent the handle whereby placing one'"'"'s thumb over the pressure relief hole closes the hole and whereby applying continuing pressure by the thumb onto the handle and compressing the resilient member directs air from the deformable resilient member through the tube means into the holding chamber means to effect an increase in air pressure in the holding chamber means;

    a plurality of orifices constructed in the bristle-retaining plate and having their longitudinal axes lying substantially in the same plane to provide a controlled dispensing of the treatment material with little or no wastage and providing the advantage of being able to carefully direct the flow of treatment material to a desired location, the orifices releasing the increase in air pressure in the holding chamber means and serving to direct a flow of material from said holding chamber means onto a work surface engaged by bristles of the bristle-retaining plate, the orifices including a narrow, longitudinal cylindrically-shaped bore section adjacent the work surface thereof and further including a concentrically aligned truncated bore section communicating therewith and with the holding chamber means, a first end of the truncated bore section being of substantially the same diameter as the cylindrically-shaped bore section and a second end of the truncated bore section being of a greater diameter than said cylindrically-shaped bore section; and

    a removable filler plug inserted in an opening in an uppermost portion of the holding chamber means and being removable to permit the filling of the holding chamber means with the treatment material.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×