Fluid sprinkler

Claim 1

AN IMPULSE-TYPE SPRINKLER ADAPTED TO BE MOUNTED ON A FIXED FLUID INLET MEMBER COMPRISING BEARING MEANS RIGIDLY SECURED TO THE INLET MEMBER AND DEFINING A PREDETERMINED FIRST AXIS OF ROTATION; A FLUID CONDUCTING MEMBER MOUNTED FOR ROTATION ABOUT SAID AXIS AND RELATIVE TO THE BEARING; SEAL MEANS INTERPOSED SAID BEARING MEANS AND SAID FLUID CONDUCTING MEMBER INCLUDING FORCE MEANS TO EXERT A LOAD ON SAID SEAL MEANS THEREBY TO IMPOSE A PREDETERMINED FRICTIONAL DRAG RESISTING RELATIVE ROTATION OF SAID FLUID CONDUCTING MEMBER AND SAID BEARING MEANS; A HOUSING PROVIDING A FLUID CHAMBER AND INCLUDING AN IMPULSE ARM ROTATABLY MOUNTED ON THE HOUSING FOR OSCILLATION ABOUT A SECOND AXIS, AN ANVIL MEMBER PROVIDING TWO SUBSTANTIALLY COPLANAR CONTACT AREAS IN DIAMETRICALLY OPPOSED RELATIONSHIP RELATIVE TO SAID SECOND AXIS AND ADAPTED TO BE STRUCK SUBSTANTIALLY SIMULTANEOUSLY BY SAID ARM DURING OSCILLATION THEREOF, A BIASING SPRING MOUNTED ON THE HOUSING AND URGING THE ARM INTO CONTACT WITH SAID AREAS OF THE ANVIL, AND A FLUID DISCHARGE NOZZLE IN COMMUNICATION WITH SAID CHAMBER AND ORIENTED RELATIVE TO THE ARM TO DISCHARGE FLUID IN A DIRECTION TO STRIKE THE ARM AND CAUSE ROTATATIONAL MOVEMENT THEREOF AWAY FROM THE CONTACT AREAS THEREBY TO STORE ENERGY IN SAID BIASING MEANS; FLUID CONDUCTING MOUNTING MEANS SECURING THE HOUSING TO SAID FLUID CONDUCTING MEMBER IN FLUID COMMUNICATION THEREWITH AND DISPOSING SAID SECOND AXIS IN A PLANE SUBSTANTIALLY PARALLEL TO BUT ECCENTRICALLY OF SAID FIRST AXIS WHILE DIPOSING SAID DISCHARGE NOZZLE TO EFFECT FLUID DISCHARGE IN A TANGENTIAL DIRECTION RELATIVE TO A CIRCLE HAVING ITS CENTER AT SAID FIRST AXIS; AND ADJUSTMENT MEANS CARRIED BY SAID MOUNTING MEANS TO PERMIT ADJUSTABLE MOVEMENT OF THE HOUSING ABOUT A THIRD AXIS NORMAL TO SAID FIRST AXIS SO THAT SELECTIVE ELEVATION IS PERMITTED OF SAID DISCHARGE NOZZLE AND THE JET OF FLUID DISCHARGED THEREFROM THEREBY DETERMINING THE RADIUS OF FLUID DISTRIBUTION OF SAID DISCHARGE FLUID.