US PATENT SUBCLASS 198 / 717
.~ Pusher conveyor and separate load support surface

Current as of: June, 1999
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198 /   HD   CONVEYORS: POWER-DRIVEN

618  DF  CONVEYOR SECTION {26}
717.~ Pusher conveyor and separate load support surface {7}
718  DF  .~.~> Condition responsive control
719  DF  .~.~> Having means to prevent damage to conveyor
720  DF  .~.~> Having means to recycle conveyed load
721  DF  .~.~> With antifriction or movable supporting surface
722  DF  .~.~> Rotating pusher {1}
725  DF  .~.~> Endless-orbiting pusher or its load support {5}
736  DF  .~.~> Reciprocating pusher {4}

DEFINITION

Classification: 198/717

(under subclass 618) Apparatus wherein the conveyor section includes surface means which is the sole support for a load or loads against gravity and which does not move to convey the load, said conveyors also including load-propelling means which moves substantially parallel to said surface means and exerts only a force against the load or a portion thereof to move said load said surface means.

(1) Note. Patents solely disclosing pusher-type conveyors, but claiming only flight structure, flight and transmission connection means, flight or flight transmission guide means, or any subcombination of a pusher-type conveyor, not classified elsewhere, which is directly in contact with the load, or deals with load movement, will be found in this or indented subclasses.

(2) Note. See the Notes to subclass 570 for the distinction between plural and single pusher conveyors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

597, for conveying systems having a plurality of conveying

sections and a pusher-type shifter associated with one of the sections.

644, for conveyors for moving structures, some of which are the pusher-type. 657+, for screw conveyors wherein a helix pushes a load over a load-supporting surface.

660, for screw conveyors wherein the helix may be shifted axially.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

93, and 236.01, for scraping machines and scraping implements.

56, Harvesters, the subclasses including "endless" in their titles, for pushers in that art.

99, Foods and Beverages: Apparatus,

360+, for a conveyor to transport a fluid filled receptacle to and from a heat treatment.

144, Woodworking,

242.1+, for a work feed mechanism on a woodworking machine.

210, Liquid Purification or Separation,

154+, for flume stream-type strainers which may include like devices for cleaning the strainers. 415, Rotary Kinetic Fluid Motors or Pumps,

5, for like structures utilized in a pump or turbine.

416, Fluid Reaction Surfaces (i.e., Impellers),

7+, for like structure reacting with an unconfined or undirected medium fluid.

452, Butchering,

177+, for pushers to push hooks along a track in the butchering art.