The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 1984
Filed:
Jun. 28, 1982
Applicant:
Inventor:
Gordon F Redington, St. Paul, MN (US);
Assignee:
McQuay Inc., Minneapolis, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24F / ; F16K / ;
U.S. Cl.
CPC ...
137601 ; 49 91 ; 98110 ; 251306 ;
Abstract
A damper assembly for controlling the flow of fluid through a passageway is disclosed. The damper assembly comprises a rectangular frame (22) adapted to be fitted in a passageway. A plurality of damper blades (24) are supported for pivotal motion in the frame (22) about spaced, parallel longitudinal axes (26) between opened and closed position. The blades (24) are operatively interconnected by a linkage mechanism (28) so as to be substantially simultaneously rotated as required. Operative means including a drive shaft (30) suitably attached to one or more of the blades (24) is provided for rotating the blades between opened and closed positions.