(under the class definition) Apparatus comprising a first rotary element driven by a source of power, a second rotary element connected to the working member to drive same, and means to selectively engage or disengage said first and second rotary elements to connect or disconnect the working member and source of power.
SEE OR SEARCH CLASS
417, Pumps,
319, for pumps having disengageable rotary drive connections. For the relationship between Class 92 and Class 417 see section III of the class definition of Class 417.
