Coating implements with material supply – Material flows through porous tool – Hollow roller
Reexamination Certificate
2000-06-26
2001-03-27
Walczak, David J. (Department: 3751)
Coating implements with material supply
Material flows through porous tool
Hollow roller
C401S219000
Reexamination Certificate
active
06206599
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the field of paint applicators having a self contained supply of paint in general, and in particular to a paint applicator having a split air flow pressurization to both force and disperse a supply of paint delivered to an applicator surface.
2. Description of Related Art
As can be seen by reference to the following U.S. Pat. Nos. 3,539,268; 4,175,300; 4,842,432; 4,997,302; 5,769,769, the prior art is replete with myriad and diverse paint rollers having a supply of paint delivered under pressure directly to the roller surface.
While all of the aforementioned prior art constructions are more than adequate for the basic purpose and function for which they have been specifically designed, they are uniformly deficient with respect to their failure to provide a simple, efficient, and practical hand held paint roller applicator handle construction having an air pump arrangement that both pressurizes a paint containing reservoir for delivery of paint to a roller, but which also assists in the pressurization and distribution of the paint along a porous paint roller axle.
As most people who employ paint rollers are all too well aware, the major drawback with this type of device is the repeated need to replenish the supply of paint on the exterior surface of the paint roller.
As a result, several prior art attempts as mentioned above have been developed to address this system by supplying paint under pressure into the interior of the hollow paint roller. Unfortunately, these prior art constructions were either two unwieldily in that they required a stationary paint reservoir that delivered paint under pressure through a long flexible hose to the roller applicator. Or, as in the case of the Simonette patent (U.S. Pat. No. 4,997,302) required an extremely long handled reservoir that would serve as a pumping station to deliver paint to the roller surface.
As a consequence of the foregoing situation, there has existed a longstanding need for a new and improved and practical paint roller handle construction that would closely resemble the non-powered manual paint roller handles that are in common usage today, but which would also be intended to deliver a pressurized supply of paint to the porous roller surface, and the provision of such a construction is a stated objective of the present invention.
BRIEF SUMMARY OF THE INVENTION
Briefly stated, the handle construction that forms the basis of the present invention comprises in general, a roller support unit, and a pressurized paint delivery unit that cooperates with the roller support unit to deliver separate streams of pressurized air and pressurized paint into the interior of a porous paint roller.
As will be explained in greater detail further on in the specification, the roller support unit includes an elongated contoured hollow handle member having a generally straight inboard end provided with a pressurization chamber and a generally U-shaped outboard end which terminates in an elongated apertures axle element that is adapted to rotatably support a porous paint roller.
In addition, the paint delivery unit includes a paint reservoir member attached to the inboard end of the handle member and provided with an air inlet conduit and a paint outlet conduit, and a pump member disposed within the inboard end of the handle member for providing pressurized air through the hollow handle member, as well as the air inlet conduit so that pressurized paint from the reservoir member and pressurized air from the handle member will be mixed together in the elongated apertured axle element on the outboard end of the handle member for delivering paint on demand to the porous paint roller.
REFERENCES:
patent: 3231151 (1966-01-01), Clark et al.
patent: 3337899 (1967-08-01), Rentfrow
patent: 3539268 (1970-11-01), Stebbins
patent: 3554659 (1971-01-01), Stokes
patent: 4175300 (1979-11-01), McGlew et al.
patent: 4659243 (1987-04-01), Winson
patent: 4842432 (1989-06-01), Snetting
patent: 4997302 (1991-03-01), Simonette
patent: 5769769 (1998-06-01), Torntore
Buchanan Franklyn
Buchanan Hyacinth V.
Henderson & Sturm LLP
Walczak David J.
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