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

• Current Assignee: Dorothy L. Bell, James L. Bell
• Original Assignee: Dorothy L. Bell, James L. Bell
• Inventors: Bell, James L., Bell, Dorothy L.
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US06/160,012
• Time in Patent Office: 638 Days
• Field of Search: 15/191 A, 15/344, 15/405, 401/184, 401/185, 401/188 R, 401/283, 401/200, 401/278
• US Class Current: 401/185
• CPC Class Codes: A45D 24/22 Combs with dispensing devices for liquids, pastes or powders
• CPC Class Codes: A46B 11/0041 Flexible or deformable reservoirs, e.g. resilient bulbs, compressible tubes

Abstract

A material dispensing brush having a substantially rigid holding chamber and a resiliently, deformable bulb attached to the chamber for the purpose of pressurizing the same. The bulb is positioned proximate to the handle of the brush so that an operator may use his thumb to depress the bulb and thus increase the air pressure within the holding chamber so as to effect an ejectment of treatment material outwardly from the chamber through a plurality of dispensing orifices extending through the bristle retaining portion of the brush. The dispensing orifices have a truncated shaped portion proximate to the holding chamber so as to facilitate the delivery of the treatment material into the orifices during a pressurization of the chamber. A pressure relief hole is provided on the deformable bulb so that it may be quickly reinflated by the operator, simply by removing his thumb from the bulb, and the dispensing orifices are substantially aligned in a straight line within the same plane to permit an accurate and controlled dispensing of the treatment material.

Claims

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.

2. The invention of claim 1 wherein the elongated tube means is connected to the wall of the rigid shell by use of first and second lip means, the first lip means providing frictional engagement with an interior portion of the holding chamber means while the second lip means provides for a sealing, frictional engagement with an outer portion of the holding chamber means.

3. The invention of claim 1 wherein the elongated tube means includes means positioning the deformable resilient member in contact relation with the handle so that closing the pressure relief hole with the thumb and further application of the thumb forcibly collapses the deformable resilient member and air trapped in the cavity of the deformable resilient member is forced down the elongated tube means into the holding chamber means for maximizing the transfer of pressurized air from the cavity to the holding chamber means.