(under subclass 147) Apparatus wherein the apparatus includes means for retaining the impeller or working member in a selected position of adjustment.
(1) Note. The retaining means must be more than or in
addition to a mere static condition of the positioning mechanism. For example, a pivoted hand lever is excluded, but a detent thereon is included under this definition.
(2) Note. Excluded under this definition is a limit stop which shuts off the motor when a predetermined position of impeller adjustment is reached.
SEE OR SEARCH THIS CLASS, SUBCLASS:
46, for means to retain the impeller or working member in a selected position of adjustment combined with control means responsive to impeller speed.
