Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – With impact motive means
Patent
1975-02-20
1976-05-18
Ward, Jr., Robert S.
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
With impact motive means
239264, 285281, B05B 314, F16L 2700
Patent
active
039572056
ABSTRACT:
A sprinkler having a sprinkler head fixed to a tubular spindle which is rotatably journaled in and spring biased upwardly relative to a bearing sleeve, and improved upper and lower seals for sealing the clearance space between the spindle and bearing sleeve against entrance of water, dirt, grit and the like. The upper seal includes a seal ring which is yieldably retained by the spring in sealing force on the sprinkler head and has a depending annular flexible sealing lip surrounding and engaging a circumferential sealing surface on the bearing sleeve in such a way that if the spindle pressed downwardly through the bearing sleeve against spring action, the seal ring wipes or scrapes dirt and grit from the sealing surface to prevent jamming of the seal ring on the bearing sleeve during upward spring return of the spindle. The lower seal, which serves also as a spindle thrust bearing, is particularly useful on a water actuated impulse sprinkler and includes a carbon-graphite seal ring cushioned between resilient seal rings for providing the friction necessary for proper operation of the water actuated impulse driving means of the sprinkler.
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Brown Boniard I.
Ward, Jr. Robert S.
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