Overfill protection device

Details Overfill protection device Overfill protection device

1998-01-27

2000-10-31

Walton, George L.

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

137444, 137446, 141198, 251900, F16K 3124, F16K 3134, F16K 3300

Patent

active

061387096

ABSTRACT:
A overfill protection device includes a first tubular member, a cylindrical piston slidably fitted within the first tubular member, a spring arranged within the first tubular member and fitted over an intermediate portion of the piston, a first and second O-rings fitted in the first and second neck portions of the piston respectively, a second tubular member having an upper portion having a cylindrical recess open at a top and engaged with the first tubular member, a plug arranged within the second tubular member and located under the piston, a float rod having a cam plate at an upper end thereof, and a float fixedly connected with a lower end of the float rod, whereby no gas will be allowed to flow through the overfill protection device when the pressure within the gas tank exceeds a predetermined level.

REFERENCES:
patent: 4305422 (1981-12-01), Bannink
patent: 4423750 (1984-01-01), Morizumi et al.
patent: 4444230 (1984-04-01), Van Mullem
patent: 5282496 (1994-02-01), Kerger
patent: 5460197 (1995-10-01), Kerger et al.
patent: 5487404 (1996-01-01), Kerger

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