Fluid sprinkling – spraying – and diffusing – Body or animal carried
Reexamination Certificate
2011-08-16
2011-08-16
Nguyen, Dinh Q (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Body or animal carried
C239S153000, C239S601000, C239S590000, C239S290000, C239S321000, C224S148100, C224S148200, C224S148500, C224S148600
Reexamination Certificate
active
07997511
ABSTRACT:
This invention is related to a portable texture-spraying apparatus for uniformly dispersing a viscous material. This apparatus broadly includes a tank assembly having a body with an inner wall that defines a sealed cavity, and a piston assembly slidably disposed within the sealed cavity. The piston assembly divides the sealed cavity into an air-side chamber and a material-side chamber by providing an airtight seal therebetween. Additionally an air-control assembly is provided that broadly includes a pressure-control mechanism configured for receiving compressed air and routing a controlled pneumatic pressure to a directional valve configured for adjusting between a dispensing mode and a loading mode. In dispensing mode, the directional valve routes the controlled pneumatic pressure to the air-side chamber biasing the piston assembly toward the material-side chamber. In loading mode, the directional valve releases the air-side chamber to the atmosphere allowing for filling the material-side chamber with viscous material.
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Reynolds John
Thurber Troy
Keisling & Pieper PLC
Lowry Meredith K.
Marshalltown Company
McGraw Trevor E
Nguyen Dinh Q
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