Coating implements with material supply – Including means to regulate coating thickness
Reexamination Certificate
1999-09-23
2001-03-06
Recla, Henry J. (Department: 3751)
Coating implements with material supply
Including means to regulate coating thickness
C401S137000, C401S171000, C222S389000, C425S087000
Reexamination Certificate
active
06196742
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a mud applicator. More particularly, the invention relates to improvements in mud applicators and the delivery mechanism associated therewith, namely a mud applicator and pneumatic accessory tool for use therewith wherein the pneumatic accessory tool is particularly useful with a flat runner squeeze box.
2. Related Art
There exist a number of mastic-applying and finishing tools. For example, there exists a mud applicator which includes a hollow housing for receiving wall board mud under pressure and being movable over a surface, wherein the housing has an opening to deliver the mud therethrough to the wall board surface. Some of the mud applicator's include a mud pump which pumps the mud to the housing and forces the mud out the opening. Other applicator's include a manually squeezable housing which permits the mud to be manually forced out of the opening by applying a manual force on a movable plate disposed within the housing.
While the pumping of mud to the housing has some appeal in the industry, there remains a great need for manually operated applicators. This is partly due to the fact that the large equipment needed to operate the mud pumping equipment and partly due to added handling weight to the operator.
Accordingly, there remains a need to improve manual mud applicators. The present invention fulfills the stated need.
BRIEF SUMMARY OF THE INVENTION
It is an object to improve mud applicators.
It is another object to improve existing manually operated mud applicators.
Still another object of the invention is to provide a retrofit accessory tool for use with existing manually operated mud applicators.
Yet another object is to provide a mud applicator and pneumatic accessory tool for use therewith.
Accordingly, the present invention is directed to a mud applicator for aiding in the application of mud to a surface of a wall board or the like. The device includes a housing having a front open surface through which mud can pass, a plate movably connected within the housing such that the plate moves toward and away from the front open surface. A pneumatic piston is operably connected to the plate to cause the plate to move toward the open surface in a manner such that when mud is disposed in the housing, the plate forces the mud out of the front open surface.
Other objects and advantages will be readily apparent to those skilled in the art upon viewing the drawings and reading the detailed description hereafter.
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deVore Peter
Graham R. William
Recla Henry J.
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