Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1974-02-01
1976-03-09
Cline, William R.
Fluid handling
Line condition change responsive valves
Direct response valves
251337, 236 49, 13751215, F16K 1514
Patent
active
039425525
ABSTRACT:
An adjustable air volume regulator adapted for maintaining a constant volume flow of air therethrough regardless of variations in pressure of the air being supplied to the regulator and being adjustable for accurately maintaining a constant flow of air over a wide range of flow rates. The regulator includes a housing defining a passageway for the flow of air therethrough, valve means movable within the housing for adjustably restricting the flow of air therethrough, reciprocable linkage means cooperating with the valve means for controlling movement thereof, a spring mounted exteriorly of the housing and being connected to the linkage means for exerting an opening bias on the valve means in opposition to a closing bias imparted thereon by the pressure of the air in the housing, and means cooperating with the spring means for varying the biasing effect imparted thereby by varying the effective length of the spring for thereby adjusting the regulator to maintain a different substantially constant flow rate. The regulator may be provided with control means responsive to a demand for an increased or decreased flow of air through the regulator for adjusting the biasing effect of the spring.
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patent: 3425443 (1969-02-01), Smith
patent: 3848799 (1973-07-01), Day
Aeronca, Inc.
Cline William R.
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