US PATENT SUBCLASS 452 / 41
.~.~.~ Rotary piston

Current as of: June, 1999
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452 /   HD   BUTCHERING

30  DF  SAUSAGE MAKING {7}
35  DF  .~ Stuffing {4}
40  DF  .~.~ Pump type {3}
41.~.~.~ Rotary piston

DEFINITION

Classification: 452/41

Rotary piston:

(under subclass 40) Subject matter wherein the stuffing is forced into the casing by a device which makes complete revolutions.

SEE OR SEARCH CLASS

415, Rotary Kinetic Fluid Motors or Pumps, appropriate subclasses for a unidirectional rotating member caused to move by an external force to increase the energy in a fluid by transfer of kinetic energy from the member to the fluid.

417, Pumps, appropriate subclasses for rotary expansible chamber pumps including (1) a motor to drive the pump, (2) operated by an art device, (3) claimed in combination with another type pump or (4) provided with valving other than in-line valving or valving operating merely to perfect the operation of the pump.

418, Rotary Expansible Chamber Devices, appropriate

subclasses for rotary expansible chamber pumps excluded from Class 417.