Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy
Patent
1983-03-11
1986-01-28
Jordan, Charles T.
Power plants
Pressure fluid source and motor
With control means for structure storing work driving energy
60407, 92143, 251 48, F15B 1106
Patent
active
045662738
ABSTRACT:
The servomotor is constructed in one embodiment with a partition which forms a constriction through which air is throttled during an emergency closing of the valve. The constriction is formed with a flow resistance equivalent to a free cross-sectional area of not more than 0.02D.sup.2 ; D being the inside diameter of the cylinder. In addition, the chamber defined between the piston and the partition is not more than 10% of the combined volume of this chamber and a pressurized chamber below the partition.
In another embodiment, the pressurized chamber may be formed by a pressure tank which is connected via a line which forms a constriction to the chamber below the piston. In still another embodiment, a spherical pressure tank may be secured about a cup-shaped cylinder to form the pressurized chamber while radial grooves in a flange of the cylinder form a constriction with a cover secured to the cylinder and spherical tank.
REFERENCES:
patent: 751250 (1904-02-01), Blessing
patent: 2543566 (1951-02-01), Brown
patent: 2861144 (1958-11-01), Favre
patent: 3672628 (1972-06-01), Aanstad
patent: 4018050 (1977-04-01), Murphy
patent: 4103863 (1978-08-01), Houlgrave et al.
Jordan Charles T.
Klein Richard
Sulzer Brothers Limited
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