Fire extinguishers – Automatic valves
Patent
1991-02-20
1996-01-23
Mitchell, David M.
Fire extinguishers
Automatic valves
169 37, 169 56, 169 90, 169DIG3, 137 79, 251 11, 206 07, A62C 3508
Patent
active
054858844
ABSTRACT:
An actuator for performing a function at a predetermined temperature includes an actuator assembly with a resiliently expandable element and a device for liberating hydrogen gas into a sealed system formed in part by the element. When the hydrogen gas pressure in the system becomes sufficiently high, the element expands to perform the function. The resiliently expandable element is a piston or a bellows and the device for liberating hydrogen gas is a hydride sensor assembly.
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"Active Control Devices Metal-Hydrogen Systems", J. M. Welter, Journal of the Less-Common Metals, vol. 104, 1984, pp. 251-257.
German Article-"Thermostatisches Expansionsventil mit Hydridfullung", J. M. Welter et al, Regelungstechnische Praxis, Heft 2, 1983, pp. 51-55.
Golben P. Mark
Hanley David J.
Huston E. Lee
Economou Vangelis
Ergenics Inc.
Hoge Gary C.
Mitchell David M.
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