F - Mech Eng,Light,Heat,Weapons – 24 – F
Patent
F - Mech Eng,Light,Heat,Weapons
24
F
F24F 13/10 (2006.01) F15B 21/06 (2006.01) F16K 31/64 (2006.01) F24F 11/053 (2006.01)
Patent
CA 2190786
The invention relates to an actuator device for displacing a vent damper of a ventilation apparatus between open and closed positions with respect to a vent opening defined by the ventilation apparatus. The device includes a piston/cylinder mechanism including a cylinder within which a paste-like substance having a highcoefficient of expansion is contained, this substance acting on the piston, through its expansion due to temperature increases, for displacing the piston, which in turn can provide for displacement of the vent damper of an associated ventilation apparatus. Reverse displacement of the vent damper will be induced by a spring acting directly or indirectly on the piston, contraction of the substance in thecylinder due to temperature decreases being required to permit such reverse displacement.
Russell Reyneke
Seynisch Ulrich
LandOfFree
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