SPRINKLER WITH REPELLING MAGNETS
A sprinkler including a first portion arranged to lie along a generally vertical axis, a second portion arranged to rotate about the generally vertical axis relative to the first portion and to be displaced along the generally vertical axis responsive to impingement of a water stream thereon, at least a first magnet associated with the first portion and at least a second magnet associated with the second portion, the first and second magnets being magnetized to repel each other at least generally along the generally vertical axis.
1 . A sprinkler comprising:
a first portion arranged to lie along a generally vertical axis;
a second portion arranged to rotate about said generally vertical axis relative to said first portion and to be displaced along said generally vertical axis responsive to impingement of a water stream thereon;
at least a first magnet associated with said first portion; and
at least a second magnet associated with said second portion, said first and second magnets being magnetized to repel each other at least generally along said generally vertical axis.
2 . A sprinkler according to claim 1 and wherein said first portion is a fixed portion.
3 . A sprinkler according to claim 1 and wherein said first portion is a base portion.
4 . A sprinkler according to claim 1 and wherein said first and second magnets are operative to retain said second portion in an intermediate vertical position along said generally vertical axis relative to said first portion.
5 . A sprinkler according to claim 1 and wherein said first portion comprises a water inlet, a water passageway and a water outlet arranged to provide said water stream.
6 . A sprinkler according to claim 5 and wherein said water inlet, said water passageway and said water outlet are all arranged generally about said generally vertical axis.
7 . A sprinkler according to claim 1 and wherein said second portion includes a housing portion and a rotatable deflector arranged for common rotation about said generally vertical axis.
8 . A sprinkler according to claim 1 and wherein said first magnet is fixed to said first portion.
9 . A sprinkler according to claim 1 and also comprising a slidable and rotatable bearing fixed to said second portion above said first and second magnets.
10 . A sprinkler according to claim 1 and wherein said first portion is a non-fixed portion.