Fluid handling – Control by change of position or inertia of system – With second control
Patent
1986-10-09
1987-09-22
Nilson, Robert G.
Fluid handling
Control by change of position or inertia of system
With second control
137 43, F16K 1736
Patent
active
046948473
ABSTRACT:
A roll-over valve is provided for use in a vehicle fuel system having an outlet for discharging fuel vapor. The roll-over valve includes a hollow valve member that terminates in a distal tip and includes a side wall. The distal tip is formed to include a top aperture and the side wall is formed to include at least one side aperture. The top aperture and side aperture cooperate to prevent the formation of a low pressure area that might otherwise be formed over the distal tip to prevent the hollow valve member from prematurely sealing the outlet. A roll-over ball is provided for moving the distal tip from an outlet-opening position to an outlet-closing position in response to tilting of the hollow valve member during vehicle roll-over conditions. A ball is provided in the hollow valve member for closing the top aperture during a selected first range of tilting positions of the hollow valve member. A float is provided for urging the ball toward its top aperture-closing position in response to an accumulation of fuel in the hollow valve member in excess of a predetermined amount during a selected second range of tilting positions of the hollow valve member.
REFERENCES:
patent: 1683338 (1928-09-01), Evinrude
patent: 2396233 (1946-03-01), Abrams
patent: 3765435 (1973-10-01), Schlanzky
patent: 3996951 (1976-12-01), Parr et al.
patent: 4095609 (1978-06-01), Martin
patent: 4162021 (1979-07-01), Crute
patent: 4351350 (1982-09-01), Crute
Nilson Robert G.
Stant Inc.
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