(under the class definition) Apparatus combined with means, which means if claimed, per se, would be classified in another class and which is not merely a part or subcombination of the motor.
(1) Note. In view of Class 92 and the intimate relationship thereof with this class many subject matters which ordinarily would be considered to be combined when claimed in combination with the basic subject matter of this Class 91 are not considered to be combined herein and are excluded under this definition. The following basis has been used to determine whether certain subject matter is to be considered as combined under this definition. If Class 92 specifically provides a basis of classification for the subject matter under consideration combined with the subject matter of Class 92 then said subject matter combined with basic subject matter of this Class 91 will be excluded from this definition. The miscellaneous combined subclass of Class 92 (92-145) is not considered to specifically provide a basis of classification for any combined device. For example, subject matter of this class combined with a fluid purifying means as provided for in 92-78 or with a nonsealing cleaning means as provided for in 92-87 would be excluded from this definition.
(2) Note. Inasmuch as a motor must transmit its power to the load to be driven thereby there is ordinarily some power transmitting mechanism between the motor working member and load. This power transmitting mechanism is ordinarily termed the "transmission" and may include a single rigid element such as a piston rod or may include a number of relatively movable elements such as a lever or linkage system. Any element of the transmission which necessarily partakes of a given motion or pattern of motion dependent upon the motion of the motor working member is considered to be basic subject matter of the motor and is excluded from this definition. However, when the transmission includes some part which does not necessarily partake of a given motion in accordance with the motion of the motor working member, such as a selectively engageable clutch, this no longer constitutes basic subject matter for this class and causes classification under this definition. The mere inclusion in the transmission of a lost motion or resilient connection will not cause classification under this definition.
(3) Note. Apparatus found in this subclass includes for example, motors having a selectively engageable clutch or gear in a transmission from the motor to a load and motors having means to prevent formation of ice or to break up ice in the exhaust passage from the motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
53, for expansible chamber motors for starting or rotating an engine and having a disengageable clutch or gearing connection therewith. 391, for expansible chamber motors with a manual actuator which may be clutched to the working member to move the load in the absence of operation of the motor.
