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:
Aug. 26, 1997
Filed:
Dec. 05, 1995
Dennis Leroy Davis, Blue Springs, MO (US);
Michael Gene Wiltfong, Blairstown, MO (US);
Tomkins Industries, Inc., Dayton, OH (US);
Abstract
An isolation damper for positioning in a duct passageway has a housing which forms a sealing chamber. The housing has a removable access panel for providing access to the sealing chamber. The damper has a blade which is capable of being actuated between an open position, wherein it allows passage of gas through the housing, and a closed position, wherein the passage of gas through the housing is blocked. A replaceable seal unit is slidably positionable within the sealing chamber by removing the access panel. The seal unit includes a first sealing plate and a second sealing plate. Each plate has an opening formed therein to allow passage of gas therethrough. Further, each plate also has a flexible sealing member attached thereto and extending about the periphery of the opening. The sealing members contact opposite surfaces of the blade when the blade is in its closed position to prevent passage of gas through the housing.