Fluid sprinkling – spraying – and diffusing – With cleaning means – drip collecting – waste disposal or soil... – Nozzle cleaner – flusher or drainer
Patent
1998-02-26
1999-11-23
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
With cleaning means, drip collecting, waste disposal or soil...
Nozzle cleaner, flusher or drainer
239115, 239205, 2392883, B05B 128
Patent
active
059885238
ABSTRACT:
A pop-up sprinkler unit includes an outer cylindrical fixed housing for subsurface mounting, with a riser reciprocally mounted in a central bore of the housing for extending up through a portion of the soil. A radially retractable and expandable resilient plastic containment ring is mounted at an outlet end of the housing and engages an annular inner shoulder of the housing for retaining a coil spring and the riser in the bore. The containment ring is split to enable expansion and retraction. It has a first height throughout a first portion of its circumference and a second lower height throughout a second portion of its circumference to enable overlap during insertion of the ring into the upper end of the fixed housing. This configuration eliminates a gap at the split when the ring is in its retaining position, thereby preventing debris from entering the bore of the housing and preventing complete extension and/or retraction of the riser.
REFERENCES:
patent: 2807511 (1957-09-01), Fleming
patent: 4449721 (1984-05-01), Tsuge
patent: 5222669 (1993-06-01), Lawson
patent: 5423486 (1995-06-01), Hunter
patent: 5711486 (1998-01-01), Clark et al.
patent: 5779243 (1998-07-01), Hanlon
Bocanegra Jorge
Hunter Industries, Inc.
Jester Michael H.
Kashnikow Andres
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