US PATENT SUBCLASS 318 / 45
.~ Mechanically coupled in fixed ratio of movement

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

Internet Version by PATENTEC © 1999      Terms of Use


318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

34  DF  PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS {22}
45.~ Mechanically coupled in fixed ratio of movement {2}
46  DF  .~.~> Motors having unlike operating characteristics {1}
48  DF  .~.~> Mechanically coupled in torque opposition

DEFINITION

Classification: 318/45

(under subclass 34) Subject matter in which means are provided for coupling, mechanically, the driving or output members of two or more motors in a fixed or predetermined ratio of movement.

(1) Note. Where one motor is connected to actuate an element of a second motor which element is not the working or output member of the second motor, classification is not in this subclass or subclasses indented hereunder but in some other appropriate subclass.

(2) Note. The following coupled motors are included in this subclass: (1) two motors rigidly and directly connected to a common load shaft whether in a common or separate housing so long as each of the motor units is a distinct unit capable of operating by itself; (2) two or more motors coupled together through a variable speed gearing which is adjustable to effect different coupling or speed ratios between the motors but when adjusted to any particular ratio, does not permit the motors to operate at any other ratio of speeds; (3) two or more motors positively but resiliently, connected to a common load shaft so that each motor is capable of slight movement relative to its shaft but further movement in the same direction is inhibited; (4) Two or more motors geared to a common load.

(3) Note. The following motors are not included in this subclass: (1) Two or more motors connected to a common load by any means where slippage or racing of one motor may occur relative to another; such, for example, as two motors driving separate wheels of a vehicle which wheels are not positively geared or linked together by a means other than the common smooth rail or roadbed. See subclass 52 for this subject matter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

52, see Note 3 above.

137, for motor systems which include an auxiliary motor for producing mechanical torque on the principal during starting or acceleration periods only. SEE OR SEARCH CLASS

105, Railway Rolling Stock,

49+, for multiple motored electric locomotives the several wheels or axles of which may be mechanically interconnected by means of parallel or side rods.

192, Clutches and Power-Stop Control,

.02, for two motors coupled through a clutch.