Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2005-06-07
2005-06-07
Rivell, John (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S527000, C137S527600
Reexamination Certificate
active
06901954
ABSTRACT:
A safety relief valve is provided for use in association with a liquid storage tank. The safety relief valve generally includes a valve base, a valve seal plate, a hinge mechanism and a lever mechanism. The valve seal plate is pivotally coupled to the valve base by the hinge mechanism which is adapted to allow pivotal movement of the valve seal plate between a closed position and an open position. The lever mechanism is pivotally coupled to the valve base and is adapted to control the pivotal movement of the valve seal plate. In one embodiment, the hinge mechanism includes an adjustment device adapted to adjust the valve opening set point. In another embodiment, the lever mechanism includes a rod pivotally coupled to the valve base and a guide rotatably coupled to the valve seal plate, with the rod being displaceable through the guide during pivotal displacement of the valve seal plate.
REFERENCES:
patent: 1682039 (1928-08-01), Feagles
patent: 1725428 (1929-08-01), Tilden
patent: 2282532 (1942-05-01), Shenk
patent: 2827921 (1958-03-01), Sherman et al.
patent: 3040772 (1962-06-01), Todd
patent: 3060962 (1962-10-01), Graves
patent: 3074429 (1963-01-01), Farrow
patent: 3358709 (1967-12-01), Thresher et al.
patent: 3509908 (1970-05-01), Latham et al.
patent: 3616814 (1971-11-01), Hendey
patent: 3710813 (1973-01-01), Hodgman, Jr.
patent: 3897804 (1975-08-01), Buck et al.
patent: 5158104 (1992-10-01), Wilkins
patent: 5205311 (1993-04-01), Wilkins
patent: 5584315 (1996-12-01), Powell
patent: 5855224 (1999-01-01), Lin et al.
patent: 6050293 (2000-04-01), Lin et al.
patent: 6085781 (2000-07-01), Boutry
Rivell John
Woodard Emhardt Moriarty McNett & Henry LLP
LandOfFree
Safety relief valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety relief valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety relief valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3519258