Valves and valve actuation – Rotary valves – Ball valve
Patent
1989-04-03
1990-08-07
Joyce, Harold
Valves and valve actuation
Rotary valves
Ball valve
251327, 251329, 251291, 98 391, F24F 706
Patent
active
049458221
ABSTRACT:
An air control apparatus for a forced air central air conditioning system of the type having an air conditioning unit for conditioning air and a duct for conducting the conditioned air from the unit to a living area of a building. The air control apparatus includes a frame having a border and an air passage defined by the border, the border having a first surface for attachment to a first portion of the duct and an opposite second surface for attachment to a second portion of the duct, and an air seal slidably disposed in the frame between the first and second surfaces of the border, the air seal being movable in and out of the air passage to open and close the air passage and thereby regulate the flow of air therethrough. A handle is removably attached to the air seal and extends away from the frame for allowing the air passage to be manually opened and closed from within the living area of the building. A forced air central air conditioning system having an air control apparatus for regulating the flow of air through the system is also provided.
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Hicks E. LaRuth
Hicks Lester R.
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