Fire hydrant system

Details Fire hydrant system Fire hydrant system

2007-06-12

2007-06-12

Lee, Kevin (Department: 3753)

Fluid handling

Hydrant type

Protection against freezing

C137S292000, C137S293000, C137S294000, C137S295000, C137S272000

Reexamination Certificate

active

10544792

ABSTRACT:
The present invention relates to a hydrant system that is projected over the ground while being buried in the underground. The hydrant system comprises a sluice valve connected to a water-guide tube within a manhole M, the sluice valve having a first openings/shutting shaft disposed therein; a female cylinder having a drain valve that is opened when the sluice valve is locked and that is locked when the sluice valve is opened, and a bracket having a through-hole; a male cylinder having a piston for opening/shutting the bottom of the male cylinder as a piston rod is rotated in the forward or reverse direction; a rod for limiting a projection range of the male cylinder protruded against the female cylinder; a manhole cover having a sub hole through which the male cylinder passes; a second opening/shutting shaft for rotating the first opening/shutting shaft; and a universal joint, which connects the first opening/shutting and the second opening/shutting shaft.

REFERENCES:
patent: 1349062 (1920-08-01), Goldberg
patent: 2234635 (1941-03-01), Scott
patent: 6216792 (2001-04-01), Miller
patent: 10-140623 (1998-05-01), None
patent: 10-140624 (1998-05-01), None
patent: 100306974 (2001-08-01), None

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