Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Patent
1992-10-20
1994-09-20
Wayner, William E.
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
137553, 92 91, F16K 31145
Patent
active
053482700
ABSTRACT:
A damper includes an elastic bladder which is attached to and surrounds a support element mountable in a ventilation duct. The bladder inflates when supplied with fluid to restrict the available air space within the duct, thus restricting airflow through the duct. The amount of restriction can be regulated by monitoring the degree of inflation of the bladder and by controlling the degree of inflation to provide the desired airflow restriction rate. The bladder may be inflated by supplying pressurized air to the interior of the bladder through the support element or by vaporizing a refrigerant in communication with the bladder. The damper may comprise a single bladder extending longitudinally through the duct or a plurality of bladders extending transversely across the duct.
REFERENCES:
patent: Re29302 (1977-07-01), De Lepeleire
patent: 2336450 (1943-12-01), Voorhess et al.
patent: 3022977 (1962-02-01), Jones
patent: 3126028 (1961-04-01), Kurfiss
patent: 3465814 (1968-03-01), Heck et al.
patent: 3494588 (1970-02-01), Kisling, III
patent: 3588036 (1971-06-01), Harter
patent: 4006754 (1977-02-01), Houston
patent: 4040564 (1977-08-01), Waeldner et al.
patent: 4186876 (1980-02-01), Clark et al.
patent: 4506830 (1985-03-01), Francel
patent: 4614152 (1986-09-01), Fukasaku et al.
patent: 4703913 (1987-11-01), Hunkapiller
patent: 4787408 (1988-11-01), Twerdochlib
patent: 5016856 (1991-05-01), Tartaglino
patent: 5170986 (1992-12-01), Zelczer et al.
"Lightweight Valve Closes Duct Quickly" NASA Tech Briefs, Dec. 1991.
"Flexdampers Go Where No Other Damper Can!". 1992 Ashre Show Literature Supplement G92-14X.
"Automatic Inflatable Damper System" SPS 150-891.
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