Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Patent
1995-09-11
1997-10-21
Hepperle, Stephen M.
Fluid handling
Diverse fluid containing pressure systems
Fluid separating traps or vents
137 43, 13763014, F16K 3122
Patent
active
056785909
ABSTRACT:
A fuel cutoff valve capable of preventing a sudden rise in the internal pressure of the fuel tank during charging of fuel into the fuel tank and capable of controlling the rise in the internal pressure in stages, thereby making it possible to smoothly charge the fuel to a full tank. The fuel cutoff valve includes of a float accommodated in a case having air holes, a valve element disposed on top of the float so as to close an air efflux channel, and a spring for assisting a valve-closing movement of the float. The valve element is formed of rubber, and includes a base portion attached to an upper portion of the float and a disk-shaped seal portion capable of being brought into pressure contact with an entire peripheral edge of the air efflux channel, air holes being formed in the seal portion. The float includes in its upper portion a plate-like valve seat disposed below the seal portion and capable of closing the air holes in the seal portion when the valve seat is brought into pressure contact with the outer peripheral edge of the seal portion, and a base-portion attaching portion disposed in a center of the valve seat.
REFERENCES:
patent: 2673618 (1954-03-01), Batchelder
patent: 2853092 (1958-09-01), Klikunas
patent: 3557837 (1971-01-01), Giwosky
patent: 4982757 (1991-01-01), Ohashi et al.
patent: 5044389 (1991-09-01), Gimby
patent: 5172714 (1992-12-01), Kobayashi
patent: 5439023 (1995-08-01), Horikawa
Kasugai Joji
Nagino Yoshihiro
Hepperle Stephen M.
Toyoda Gosei Co,., Ltd.
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