Wallpaper scarifying device

Details Wallpaper scarifying device Wallpaper scarifying device

1999-09-13

2001-09-04

Watts, Douglas D. (Department: 3724)

Cutlery

Cutting tools

Scrapers

C015S236060, C015S236080, C029S081170

Reexamination Certificate

active

06282795

ABSTRACT:

FIELD OF THE INVENTION
The present invention pertains to wallpapering tools. More specifically, the present invention concerns devices for scarifying wallpaper in a wallpaper removal process.
BACKGROUND OF THE INVENTION
One of the most difficult and time consuming tasks in interior decorating is changing or simply eliminating wallpaper. The process is so tedious many people often paper or paint over existing wallpaper. This however, is typically unacceptable as the results are less than ideal.
When removing wallpaper, if the adhesive can be softened, the paper can usually be easily peeled from the wall surface. Devices for weakening the adhesive include solutions, steam machines, spray bottles etc. Which attempt to penetrate the paper and reach the adhesive. Sometimes large quantities of solution can be used to soak the wallpaper, thus reaching the adhesive. Using large quantities of solution can, however, damage the wall and can be very messy. Furthermore, many types of wallpaper use materials which are water impermeable and cannot be soaked in this manner. These papers also present problems for steam machines.
The problem of penetrating wallpaper has been overcome by the development of perforators. Perforators are devices which tear or perforate the wallpaper permitting solutions to be applied to the adhesive through the perforations in the wallpaper. While effective, perforators can damage wall surfaces if not carefully handled, and their effectiveness is often reduced due to the small size of the perforations created.
It would be highly advantageous, therefore, to remedy the foregoing and other deficiencies inherent in the prior art.
Accordingly, it is an object of the present invention to provide a new and improved wallpaper scarifying device for perforating wallpaper.
Another object of the invention is to provide a new and improved wallpaper scarifying device which will not damage a wall surface.
And another object of the invention is to provide a new and improved wallpaper scarifying device which will provide relatively large perforations in wallpaper.
Still another object of the present invention is to provide a new and improved wallpaper scarifying device which is quick, efficient and easy to operate.
SUMMARY OF THE INVENTION
Briefly, to achieve the desired objects of the instant invention in accordance with a preferred embodiment thereof, provided is a wallpaper scarifying device for scarifying wallpaper on a surface including a plate, and at least one scarifying assembly. The scarifying assembly includes a swivel fixture rotatably coupled to the plate and rotatably carrying a cutting disk offset from an axis of rotation of the swivel fixture. The cutting disk has a plurality of teeth extending from a periphery thereof.
In a more specific embodiment, the swivel fixture carries the cutting disk at an angle of less than 45 degrees relative a plane perpendicular to the axis of rotation.
In a further embodiment, the swivel fixture includes a shaft having a first end rotatably coupled to the plate about the axis of rotation and a second end, and a base having a first surface coupled to the second end of the shaft and a second surface. The second surface is canted at an angle with respect to a plane perpendicular to the axis of rotation and substantially parallel to the surface to be scarified. The cutting wheel is coupled to and substantially parallel with the second surface.
In yet another embodiment, the base is coupled to the shaft at an angle with respect to the plane perpendicular to the axis of rotation. The angle is preferably approximately 5 degrees.


REFERENCES:
patent: 4592108 (1986-06-01), Svendsen

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