Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1980-02-11
1982-07-20
Rosenthal, Arnold
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137504, 251 11, 251129, 128213R, F16K 3104, F16K 1730
Patent
active
043400833
ABSTRACT:
A valve includes a piezoelectric bar mounted as a cantilevered beam. The free end of the bar is mounted for movement toward and away from a valve seat surrounding a control opening. The beam is initially flexed when in the closed position so as to maintain a fluid-tight seal with the seat. Application of an electrical signal causes the bar to flex further, thereby causing the deflectable beam portion to move away from the valve seat and permitting fluid to flow through the control opening. The beam valve may be designed to provide a substantially constant flow independent of changes in the pressure differential thereacross, and to exert a minimum closing force against a seat to provide a substantially fluidtight seal therewith in the absence of a command signal applied to the bar.
REFERENCES:
patent: 3029743 (1962-04-01), Johns
patent: 3229956 (1966-01-01), White
patent: 3275285 (1966-09-01), Morris
patent: 3465732 (1969-09-01), Kattchee
patent: 4053136 (1977-10-01), Perl
patent: 4077405 (1978-03-01), Haerten et al.
Carleton Controls Corporation
Rosenthal Arnold
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