US PATENT SUBCLASS 401 / 175
.~.~.~.~ Screw means through piston

Current as of: June, 1999
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401 /   HD   COATING IMPLEMENTS WITH MATERIAL SUPPLY

143  DF  INCLUDING MEANS TO APPLY MATERIAL-MOVING FORCE {10}
171  DF  .~ Piston-provided reservoir {2}
172  DF  .~.~ Movable by screw means {2}
174  DF  .~.~.~ On piston and manual actuator {1}
175.~.~.~.~ Screw means through piston

DEFINITION

Classification: 401/175

(under subclass 174) Implement wherein one of the cooperating elements is formed in a wall which defines a central aperture through the piston and the other on a rod passing through said aperture, whereby rotation of the rod relative to the piston causes translatory movement of the piston.