US PATENT SUBCLASS 401 / 77
.~.~.~.~ By pin and slot coupling

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

49  DF  SOLID MATERIAL FOR RUBBING CONTACT OR SUPPORT THEREFOR {6}
55  DF  .~ Including means to advance material {15}
68  DF  .~.~ Screw feed {8}
75  DF  .~.~.~ Including means to positively transmit rotation to sliding screw-feed member {2}
77.~.~.~.~ By pin and slot coupling {1}
78  DF  .~.~.~.~.~> Including carrier for piece of material

DEFINITION

Classification: 401/77

(under subclass 75) Implement wherein the element is tubular, is disposed coaxially about said members which are in camming engagement, and is provided with a longitudinal groove or aperture within which a slender, radially extending portion of the cam element is slidably received.

(1) Note. The drawing below illustrates an example of the subject matter of this subclass. The members A and B are rotatably and axially movable relative to each other; the element C and member A are axially but not rotatably movable relative to one another; and the element C and member B are rotatably but not axially movable relative to one another. [figure] [figure]

SEE OR SEARCH THIS CLASS, SUBCLASS:

71, for a screw-feed means comprising concentric tubular members with oppositely oriented helical slots in which a cam follower is received.

75, for an implement in which one of the screw-feed members is provided with a longitudinal slot and the torque-transmitting element with a cooperating projection received in the slot.