(under the class definition) Apparatus provided with two or more dissimilar rotary expansible chamber devices.
(1) Note. Plural rotary expansible chamber devices of like types differing only in size and shape are excluded from classification here.
(2) Note. A rotary expansible chamber device differing from another but which merely supplies a coolant, lubricant, etc., to the other is excluded from classification here, and is classified in subclasses 83+.
(3) Note. Ordinarily, a rotary expansible chamber device of the stationary cylinder type and a rotary expansible chamber device of the moving cylinder type are considered to be diverse and classifiable here. However, a rotary expansible chamber device in which there is provided a rotating member common to both types having surface portions forming part of the working chamber surface of each type is not considered
proper for classification here. See subclass 160 for such devices.
(4) Note. The following are considered to be dissimilar rotary expansible chamber devices: (1) Sliding vane or abutment type; (2) Swinging vane or abutment type; (3) Interengaging rotary members; (4) Nested or internal-external gear type; (5) Planetary; (6) Moving cylinder; (7) Mutating; and (8) Other miscellaneous rotary expansible chamber devices.
SEE OR SEARCH CLASS 417, Pumps, appropriate subclasses, for diverse pumps and motors wherein at least one pump or motor is not a rotary expansible chamber device.
