(under subclass 300) Cleaning apparatus having means continuously operative to sense a condition or change of conditions and functioning to operate or control the apparatus to establish and/or maintain a condition or operation thereof as a result of the sensing.
(1) Note. The condition sensed may be the presence or absence of a work piece or portion thereof or may be a physical condition of the work such as thickness. However, work-operated or work-sensing devices are not considered to be automatic unless the operating or sensing functions are continuous. Thus, nozzle adjustments for ambulant floor-type vacuum cleaners which function in a cyclic manner to sense the surface of the rug or floor and to adjust the nozzle for the condition sensed, but which are effective only when the cycle is set in operation by the attendant, are considered to
be nonautomatic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
307, for installed or fixed position cleaners having work-operated or work-sensing controls.
354+, for nozzle adjusting means nonautomatic in character, and see (1) note above.
