Cutlery – Perforating or indenting implements – Pointed
Reexamination Certificate
1999-09-01
2001-05-29
Watts, Douglas D. (Department: 3724)
Cutlery
Perforating or indenting implements
Pointed
C030S445000, C083S030000
Reexamination Certificate
active
06237227
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a device for punching holes in sheet metal. More specifically, the invention relates to a support having integral punches for piercing the annular channel of a metal container.
BACKGROUND OF THE INVENTION
Varnishes, paints, stains and other fluids often come in metal cans. This well-known type of can is a simple cylinder of metal with an attached circular metal bottom at its closed end. At the open end of each can is an annular lip and an annular channel for receiving a can lid. The lid has an annular ridge that frictionally engages the annular channel to seal the can after the can is filled with fluid.
While using paint from a can, the painter frequently scrapes his or her brush against the annular lip at the top of the can to remove excess paint from the brush. In this way, paint accumulates in the annular channel of the can. Because a painter will often use less than an entire can of paint, to preserve the freshness of the paint (or varnish or stain), the painter would replace the lid on the can. However, the paint that has accumulated in the annular lip would run over the side of the can as the painter replaces the lid. This not only complicates cleanup, but prevents tight closure of the lid on the top of the can. Air seeps into the can and dries or ruins the paint. For these reasons, the painter must first clean the annular lip of excess paint using his or her brush, rags, etc. before replacing the lid on top of the can. This further complicates cleanup, as paint spills over the can sides, and the brush is saturated with paint from the annular lip.
Thus, a need exists for a means to keep the annular lip of a can free from accumulating paint, varnish, stain, or other fluids, to reduce cleanup efforts and maintain paint freshness, which is accomplished by this invention.
SUMMARY OF THE INVENTION
In another embodiment, the apparatus comprises a support having a first face defining a plane and a second face connecting to the first face such that the first face is at least generally parallel to the second face. The apparatus further comprises a plurality of metal punches, each punch having a corresponding base and point. The base of each punch is integrally connected to the first face such that each punch projects perpendicular to the plane in a common direction, wherein each point is simultaneously alignable with the annular channel of a fluid container. The second face further comprises an engageable means for driving the punches through the annular channel and creating fluid drain passages.
REFERENCES:
patent: 1080636 (1913-12-01), Johnson
Pojunas, Jr. Leonard W.
Watts Douglas D.
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