Well bore apparatus

Claim 1

FLUID DISCHARGE APPARATUS FOR USE IN A WELL BORE COMPRISING: A SUPPORTING BODY ADAPTED TO BE SUSPENDED IN A WELL BORE, SEALING MEANS ON SAID BODY TO ISOLATE A SECTION OF A WELL BORE, SAID SEALING MEANS HAVING A CENTRAL PORT, MEANS COUPLED TO SAID SEALING MEANS INCLUDING A CYLINDER WITH END WALLS, PISTON MEANS IN SAID CYLINDER FORMING SEPARATE CHAMBERS, EACH OF SAID CHAMBERS ADPATED TO RECEIVE A FLUID, SAID PISTON MEANS INCLUDING A PISTON HAVING A BORE THERETHROUGH, A TUBULAR MEMBER RECEIVED IN SAID BORE FOR RELATIVE LONGITUDINAL MOVEMENT, SAID TUBULAR MEMBER HAVING A CLOSED END ADAPTED TO COOPERATE WITH SAID BORE IN ONE LONGITUDINAL POSITION TO CLOSE SAID BORE, SAID TUBULAR MEMBER HAVING A SIDE PORT, SAID TUBULAR MEMBER HAVING ITS REMAINING END DISPOSED ABOVE ONE SIDE OF THE PISTON WHEN SAID BORE IS CLOSED, SAID REMAINING END BEING ADAPTED TO ENGAGE AN END WALL OR ANOTHER PISTON MEANS TO PROVIDE DISPLACEMENT OF SAID TUBULAR MEMBER AND THEREBY PLACE SAID PORT INTO FLUID COMMUNICATION WITH THE OTHER SIDE OF SAID PISTON.