Coating implements with material supply – Reservoir separably mounted on elongated handle
Reexamination Certificate
2000-05-01
2001-12-04
Walczak, David J. (Department: 3751)
Coating implements with material supply
Reservoir separably mounted on elongated handle
C401S261000, C401S138000, C401S048000, C015S228000, C015S244100
Reexamination Certificate
active
06325563
ABSTRACT:
FIELD OF THE INVENTION
This invention is concerned with improvements in or relating to manually operable spreading apparatus for flowable materials, more specifically with improvements in or relating to apparatus for spreading a flowable adhesive and/or sealing material on a surface, such as a floor, to which flooring material, such as carpet, vinyl tile, and rugs are to be fastened.
BACKGROUND OF THE INVENTION
A number of service industries in which a decorative or protective finish is applied to a surface employ an adhesive and/or sealing material for that purpose and require that a thin coating of the material be spread uniformly on the receiving surface. A particular industry with such a requirement is the installation of coverings on floors and/or walls, such as carpet, sheet plastics material, plastic or ceramic tiles, and layers of thin hardwood strips. The sealants and adhesives are supplied in a variety of containers of the type also generally used for paints. Thus, small quantities of a litre or part liter are supplied in metal cans with press-on lids, while larger quantities, e.g. 20 or 40 liters, are supplied in small plastic drums with snap-on lids. Irrespective of the size of the surface that is to be coated, the usual method of application is for a quantity of the material to be poured onto the surface, if it is sufficiently easily flowable, or if too viscous to be poured easily, for small quantities to be scooped from the container and dumped on the surface. It is then spread uniformly by the operator, kneeling when the surface is a floor, employing for the purpose a metal or plastics hand tool of approximately rectangular shape, usually about 20 cm (8 ins) in width, the longer straight edge which engages the floor being toothed or serrated in a regular pattern so as to provide a row of uniform-size, uniformly-spaced gaps whereby corresponding uniform-size, uniformly parallel spaced lines of the adhesive are formed on the surface as the tool is dragged over it, the surplus material being pressed ahead of the tool and escaping around the edges. Such operations are labour-intensive and also tend to be somewhat messy unless the operator is particularly careful, especially as the container is emptied, when it becomes more difficult to extract the remaining material therefrom. There is therefore a need for apparatus which facilitates delivery of the material to the surface and also facilitates its subsequent spreading over the surface.
SUMMARY OF THE INVENTION
It is therefore the principal object of the invention to provide new manually operable spreading apparatus for flowable materials providing for the ready supply and even application of the flowable material onto the surface on which it is to be spread under the control of the operator.
It is another object to provide in such apparatus a container for the flowable material that facilitates its supply to the surface under the control of the operator and renewal of the supply of the material to the apparatus.
It is a further object to provide such spreading apparatus having a spreader pad that facilitates control of the spread of the flowable material over the receiving surface.
In accordance with the present invention there is provided manually operable spreading apparatus for the uniform spreading on a surface of a flowable material comprising:
a rod for grasping by an operator of the apparatus;
a spreader pad at one end of the rod extending transversely therefrom and having a transversely extending surface engaging portion;
a reservoir chamber for flowable material on the rod intermediate its ends, the resevoir chamber having an upper end and a lower end; and
valve means at the lower end of the reservoir chamber operable by the operator to permit discharge of flowable material from the reservoir on to the surface for engagement and spreading thereon by the spreader pad.
Also in accordance with the invention there is provided spreading apparatus for the uniform spreading on a surface of a flowable material comprising:
a rod for grasping by an operator of the apparatus;
a spreader pad mounted in a spreader pad retainer at one end of the rod extending transversely therefrom at a right angle thereto and having a transversely extending surface engaging portion;
a pair of side pads in side pad retainers pivotally mounted at respective ends of the spreader pad, each having a surface engaging portion extending at a respective right angle to the spreader pad surface engaging portion, the side pads forming with the spreader pad a rectangular retaining structure into which flowable material to be spread is discharged and which confines the flowable material to the area of the surface over which the spreader pad is moved by the operator; and
spring means operative between each side pad retainer and the spreader pad retainer and urging the respective side pad to rotate in the direction required to maintain contact of its entire surface engaging portion with the surface as the inclination of the rod to the surface is changed.
Also in accordance with the invention there is provided spreading apparatus for the uniform spreading on a surface of a flowable material comprising:
a rod for grasping by the operator of the apparatus;
a spreader pad mounted in a spreader pad retainer at one end of the rod extending transversely therefrom at a right angle thereto and having a transversely extending surface engaging portion;
a pair of side pads in side pad retainers pivotally mounted at respective ends of the spreader pad, each having a surface engaging portion extending at a respective right angle to the spreader pad surface engaging portion, the side pads forming with the spreader pad a rectangular retaining structure into which flowable material to be spread is discharged and which confines the flowable material to the area of the surface over which the spreader pad is moved by the operator; and
spring means operative between each side pad retainer and the spreader pad retainer and urging the respective side pads to rotate in the direction required to maintain contact of its entire surface engaging portion with the surface as the inclination of the rod to the surface is changed;
a handle attached to said rod intermediate its ends for grasping by an operator for controlling the pressure applied to said spreader pad.
REFERENCES:
patent: 1049797 (1913-01-01), Arntt
patent: 1122079 (1914-01-01), Cunneen
patent: 3134129 (1964-05-01), Allen
patent: 4468830 (1984-09-01), Batchelor
McConnell and Fox
Walczak David J.
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