Sprinkler head

Claim 1

A SPRINKLER HEAD, COMPRISING: (A) A CYLINDRICAL HOUSING OPEN AT ITS UPPER END AND HAVING A RESTRICTED INLET AT ITS LOWER END; (B) A BASE MEMBER INCLUDING A TUBULAR STEM SLIDABLE IN SAID INLET BETWEEN A RETRACTED AND AN EXTENDED POSITION, AND SEALINGLY ENGAGING SAID INLET WHEN IN ITS EXTENDED POSITION TO FORM A CONTINUATION OF SAID INLET, AND ENLARGED CUP-SHAPED UPPER END GUIDED IN SAID HOUSING, AND A CENTRAL UPWARDLY DIRECTED POST; (C) A COVER MEMBER SURROUNDING SAID POST AND CLOSING SAID BASE MEMBER TO FORM A HOLLOW CHAMBER, SAID COVER MEMBER HAVING EXTERNALLY, RADIALLY INNER AND RADIALLY OUTER CONICAL SURFACES CONVERGING UPWARDLY AND INTERSECTING SAID ANNULAR RIM; OF AT LEAST FOUR UPWARDLY DIRECTED EQUALLY SPACED DISCHARGE PORTS INTERSECTING SAID ANNULAR RIM; (D) A DEFLECTOR FITTED ON SAID POST AND HAVING A CONICAL FACE CONFORMING TO THE RADIALLY INNER CONICAL SURFACE OF SAID COVER MEMBER AND CONTINUING UPWARDLY AND OUTWARDLY BEYOND SAID RIM TO DEFLECT IN COMPLEMENTARY ARCS WATER ISSUING FROM SAID PORTS; (E) AND A CAP MOUNTED ON SAID POST RETAINING SAID DEFLECTOR THEREON, AND CLEARING THE SPRAY FROM SAID PORTS, SAID CAP DIMENSIONED TO CLOSE SAID HOUSING WHEN SAID BASE MEMBER IS RETRACTED.