Ventilation – Having outlet airway – Having readliy movable air regulating louver – damper – or cover
Patent
1991-08-30
1992-09-15
Joyce, Harold
Ventilation
Having outlet airway
Having readliy movable air regulating louver, damper, or cover
49324, 236 493, 454363, F24F 702
Patent
active
051472449
ABSTRACT:
A ventilation system for a building wherein first and second opposing doors are mounted adjacent an opening into the building. Each of the first and second doors include an axis of rotation parallel to each other and parallel to a major surface of each door. A bracket member is pivotally attached to the building for rotation about a first axis which is transverse to each axis of rotation of the first and second doors. Linkage structure is provided for connecting the bracket member to each of the first and second doors such that rotation of the bracket member about the first axis opens and closes the first and second doors. The linkage structure includes link rods connecting the bracket to the first and second doors. A three dimensional ball and socket joint is provided at each end of the first and second link rods to connect the link rods to the bracket and to the respective doors. The ventilation system permits more than one vent controller apparatus to be operated simultaneously to operate a single set of long vent doors or a plurality of sets of vent doors in aligned relationship with common axes of rotation for the vent doors. Connector structure, such as a cable is provided to connect the bracket members together for simultaneous operation. Automatic control includes a pneumatic device connected to temperature responsive structure.
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Four photographs and two sheets of drawings showing a ridge vent opener apparatus by Carroll Manufacturing, Inc.
Pp. 15 and 16 from Gobbles, dated Oct., 1986, discusses a system by Pal-Tech which includes a ridge vent opener apparatus shown in the photo on p. 15.
Two pages of a brochure by Palls, of Willmar, Minn.
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