Rotary pop-up sprinkler

Claim 1

A POP-UP SPRINKLER COMPRISING A GENERALLY VERTICAL HOUSING EMBODYING MEANS AT ITS LOWER END FOR ATTACHMENT TO A WATER SUPPLY ELEMENT AND HAVING AN OPENING AT ITS UPPER END, A NOZZLE DISPOSED WITHIN SAID HOUSING WHEN THE SPRINKLER IS INOPERATIVE AND SLIDABLE THROUGH SAID OPENING TO AN ELEVATED POSITION WHEN THE SPRINKLER IS OPERATING, RIGID DIAPHRAGM MEANS NONROTATABLY BUT VERTICALLY SLIDABLY MOUNTED WITHIN SAID HOUSING AND SUPPORTING SAID NOZZLE FOR ROTATION OF SAID NOZZLE ON SAID MEANS, A FLUID ACTUATED DRIVE MEANS DISPOSED IN SAID HOUSING BELOW SAID DIAPHRAGM AND OPERABLY CONNECTED WITH SAID NOZZLE THROUGH SAID DIAPHRAGM, DIRECTIONAL FLOW MEANS IN THE LOWER PORTION OF SAID HOUSING BELOW SAID FLUID ACTUATED DRIVE MEANS WHEREBY WATER UNDER PRESSURE INTRODUCED THROUGH SAID DIRECTIONAL FLOW MEANS WILL OBLIQUELY STRIKE SAID DRIVE MEANS CAUSING THE SAME TO ROTATE AND IN TURN TO ROTATE THE NOZZLE, THE FORCE OF SAID WATER ACTING UPON THE LOWER SURFACE OF THE DIAPHGRAM AND ELEVATING THE SAME TO PROJECT THE NOZZLE VERTICALLY FROM THE HOUSING, AND THE DIAPHRAGM HAVING A WATER PASSAGE THERETHROUGH COMMUNICATING BETWEEN THE HOUSING BELOW THE DIAPHRAGM AND A PORT IN THE NOZZLE WHEREBY WATER WILL FLOW THROUGH SAID PORT AND BE DISBURSED BY SAID NOZZLE.