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:
Jun. 07, 2022
Filed:
Nov. 12, 2019
Captive-aire Systems, Inc., Raleigh, NC (US);
Joshua J. Hess, Washington Boro, PA (US);
Captive-Aire Systems, Inc., Raleigh, NC (US);
Abstract
An exhaust fan configured to exhaust air from a building includes a housing, a fan, and a motor for driving the fan. Overlying the fan is one or more dampers that are moveable from a closed position to an open position. Underlying the dampers is at least one pivot arm per damper that is pivotally connected to the fan and which normally assumes a horizontal position spaced from the overlying damper. A mechanical fusible link is connected to the pivot arm and is configured to break in response to a buildup of heat in and around the dampers. Once the fusible link breaks, then the pivot arm is operative to engage and open the overlying damper.