US PATENT SUBCLASS 401 / 75
.~.~.~ Including means to positively transmit rotation to sliding screw-feed member

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.~.~.~ Including means to positively transmit rotation to sliding screw-feed member {2}
76  DF  .~.~.~.~> Keyed blade-like or eye-headed screw member
77  DF  .~.~.~.~> By pin and slot coupling {1}

DEFINITION

Classification: 401/75

(under subclass 68) Implement having an element coaxially coupled to one of said members by means which permits relative movement between said member in an axial direction only, during the operation of the screw-feed mechanism, so that said element may transmit torque to said member at any point along the path of travel of the latter.

(1) Note. The drawing below illustrates one example of the subject matter of this subclass. The square bore in element C provides a coupling with the square shaft of member A to allow relative non-rotatable axial movement between A and C. The member A may be rotated relative to member B, by the element C, to move A axially with respect to B. [figure]

SEE OR SEARCH CLASS

464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts,

162+, for a coupling, per se, effective to transmit rotary motion, and wherein coupled members are relatively axially movable.