(under subclass 15) Apparatus in which the disengageable means is moved to or from working member movement preventing relationship responsive to the action of a pressure fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
24, for an intermeshing movement preventing means actuated by a relatively movable fluid pressure responsive member.
27, for an intermeshing movement preventing means actuated by a pressure fluid. Note the class definition, Statement Relating To Placement Of Patents Involving Combination And Subcombination Subclasses, and the paragraph following the title in the schedule of this class.
