Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Runner – shaft – or separate motor operated
Patent
1990-08-28
1992-11-10
Look, Edward K.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Runner, shaft, or separate motor operated
415157, F01D 1700
Patent
active
051619415
ABSTRACT:
An actuator and associated linkage assembly combined to multiply the force applied by the actuator in moving a flow control disk of a centrifugal fan against the air pressure generated by the fan. The actuator includes an internal spring mechanism for closing the disk against the fan air pressure. For some applications the closing force provided by the return spring may be supplemented with an auxiliary spring mechanism that is mounted for providing maximum assistance in closing the control disk, yet not prohibiting the actuator from reopening the disk.
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"Variscroll" Bulletin 323, Aug. 1983, Aladdin Heating Corporation.
Look Edward K.
Sinko Kogyo, Co, Ltd.
Verdier Christopher M.
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