Valves and valve actuation – Lost motion between actuator and valve – Check valve with external opening and closing means
Patent
1978-07-25
1980-01-22
Cline, William R.
Valves and valve actuation
Lost motion between actuator and valve
Check valve with external opening and closing means
1375135, 1375278, 1375276, 137244, 251147, 251205, F16K 1503, F16K 3144
Patent
active
041846621
ABSTRACT:
A fluidized solids control valve is disclosed that is particularly well adapted for use with a flow of coal or char that includes both large particles and fines. The particles may or may not be fluidized at various times during the operation. The valve includes a tubular body that terminates in a valve seat covered by a normally closed closure plate. The valve body at the seat and the closure plate is provided with aligned longitudinal slots that receive a pivotally supported key plate. The key plate is positionable by an operator in inserted, intermediate and retracted positions respecting the longitudinal slot in the valve body. The key plate normally closes the slot within the closure plate but is shaped and aligned obliquely to the longitudinal slot within the valve body to provide progressively increasing slot openings between the inserted and retracted positions. Transfer members are provided between the operator, key plate and closure plate to move the closure plate into an open position only when the key plate is retracted from the longitudinal slot within the valve body.
REFERENCES:
patent: 1097879 (1914-05-01), Reichard
patent: 2672883 (1954-03-01), Dillman
patent: 2838062 (1958-06-01), Held et al.
patent: 2838063 (1958-06-01), Weits et al.
patent: 2838065 (1958-06-01), Held et al.
patent: 2901331 (1959-08-01), Held et al.
patent: 2999666 (1961-09-01), Sjogren
patent: 4074691 (1978-02-01), Luckenbach
Cline William R.
Glenn Hugh W.
Jackson Frank H.
Lupo R. V.
The United States of America as represented by the United States
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