Yard hydrant

Details Yard hydrant Yard hydrant

2005-05-31

2005-05-31

Walton, George L. (Department: 3753)

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

C137S281000, C137S287000, C137S292000, C137S301000, C137S315110, C137S315410, C251S095000, C251S104000, C251S244000, C251S263000

Reexamination Certificate

active

06899120

ABSTRACT:
A yard hydrant has an elongated wet pipe with a plunger that seals against the inside of a well casing. Lifting a pivoting handle at the top of the wet pipe lowers the wet pipe which opens a normally closed supply valve. Pressurized water can then flow up the wet pipe and out of a nozzle head mounted to the upper end of the wet pipe. Lowering the handle pulls the wet pipe upward, thereby clearing it from the supply valve which is spring biased to shut off the water supply. The handle has a cam that positively actuates a normally closed anti-siphon valve so that water left in the wet pipe can fall under gravity to a collection chamber within the well casing beneath the piston. Lifting the handle again lowers the wet pipe and forces the water in the collection chamber back up the wet pipe. At the same time, the anti-siphon valve will close and the wet pipe re-opens the supply valve.

REFERENCES:
patent: 609805 (1898-08-01), Hardy
patent: 1937667 (1933-12-01), Parsley et al.
patent: 2664096 (1953-12-01), Murdock et al.
patent: 3566905 (1971-03-01), Noland
patent: 3581761 (1971-06-01), Noland
patent: 3770003 (1973-11-01), Uroshevich
patent: 3926206 (1975-12-01), Anderson et al.
patent: 3926207 (1975-12-01), Anderson et al.
patent: 4096877 (1978-06-01), Arledge, II
patent: 4282895 (1981-08-01), Young
patent: 4475570 (1984-10-01), Pike et al.
patent: 4653521 (1987-03-01), Fillman
patent: 5129416 (1992-07-01), Ackroyd
patent: 5261441 (1993-11-01), Anderson
patent: 5701925 (1997-12-01), Mulligan et al.
patent: 6047723 (2000-04-01), Hoeptner, III
patent: 6178988 (2001-01-01), Royle
patent: 6427716 (2002-08-01), Hoeptner, III

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