US PATENT SUBCLASS 60 / 679
.~.~ Having motive fluid reheater between serially connected motors

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


60 /   HD   POWER PLANTS

643  DF  MOTIVE FLUID ENERGIZED BY EXTERNALLY APPLIED HEAT {11}
670  DF  .~ Power system involving change of state {6}
679.~.~ Having motive fluid reheater between serially connected motors {1}
680  DF  .~.~.~> Motive fluid bypassing upstream motor heats reheater

DEFINITION

Classification: 60/679

(under subclass 670) Apparatus, comprising a first motor exhausting fluid from a working chamber with means to heat the exhausted fluid indirectly the heated exhaust fluid being then supplied as motive fluid to actuate a second motor or motor stage.

(1) Note. Exhaust fluid is fluid which is discharged from a motor working chamber after having done some work therein.

(2) Note. Mere re-expansion between motors as between turbine stages does not preclude classification in the proper motor class. This subclass requires the combination of a specific energizer (reheater) for the exhausted fluid wherein the energizer is defined in detail or where the energizer bears a significant relationship to the motor or generator. An energizer (reheater) recited by name only as being connected between stages of a turbine would not preclude classification in Class 415 (or Class 91, in the case of an expansible chamber motor).

SEE OR SEARCH THIS CLASS, SUBCLASS:

614, for plants wherein the exhaust from an ICE is heated prior to its being used as motive fluid for a fluid motor.

698+, for diverse motors wherein the exhaust from a motor operated by one principal is the motive fluid for a second motor which is operated by another principal.

SEE OR SEARCH CLASS 91, Motors: Expansible Chamber Type,

152, for multiple expansible chambers where the kinetic energy of the exhaust fluid of one motor chamber is not materially affected (increased) before entry into another of the working chambers.

415, Rotary Kinetic Fluid Motors or Pumps, for turbine comprising: plural rotors where the expanded fluid (exhaust) of one rotor supplies the motive fluid for a subsequent rotor where (1) the rotors may each have a separate output shaft or (2) the rotors may be connected in series all attached to a single output shaft.