Float valve for a christmas tree watering system

Details Float valve for a christmas tree watering system Float valve for a christmas tree watering system

2005-11-22

2005-11-22

Lee, Kevin (Department: 3753)

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

C137S429000, C137S433000, C137S448000, C047S040500, C047S079000, C073S322500, C073S317000, C222S067000

Reexamination Certificate

active

06966334

ABSTRACT:
The float valve has a water inlet, a perforated bottom surface and a lift valve mounted between the water inlet and the bottom surface. A float and a rocker arm are used to raise and lower the disc of the lift valve in response to a water level inside the housing. The valve seat has a first vertical axis and the water inlet has a second vertical axis and the first and second vertical axes are parallel to each other and are spaced apart a distance corresponding substantially to a radius of the valve seat. In another feature, a stud on the rocker arm interferes with the valve stem when the float is in a down position, for leaning the valve stem away from the axes of the valve seat and of the water inlet.

REFERENCES:
patent: 3766939 (1973-10-01), Reitman
patent: 5072751 (1991-12-01), Lin
patent: 5076009 (1991-12-01), Cibor
patent: 5090443 (1992-02-01), Jacobsen
patent: 5473838 (1995-12-01), Denbigh
patent: 5522179 (1996-06-01), Hollis
patent: 5575110 (1996-11-01), Couture
patent: 5867929 (1999-02-01), Jung et al.
patent: 5937574 (1999-08-01), Jacques
patent: 6073390 (2000-06-01), Baudier
patent: 6260303 (2001-07-01), Sappenfield
patent: 6347479 (2002-02-01), Greenberg

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