Stephen L Carey

US Patent:

20190145653, May 16, 2019

Filed:

Jan 16, 2019

Appl. No.:

16/248878

Inventors:

- Stittsville, CA
Stephen Dane Carey - La Vergne TN, US

Assignee:

T.A. Morrison & Co. Inc. - Stittsville

International Classification:

F24F 13/14
F24F 13/15

Abstract:

A damper comprises a generally rectangular frame extending between opposed open faces and defining an airflow region. One or more damper blades comprises a substantially air-impermeable vane pivotally mounted between the sides of the frame and pivotable between an open position and a closed position. In the closed position an edge of the adjacent blade abuts a blade stop surface formed along each end, such that in the closed position one edge of the blade adjacent to each end of the frame extends into a recess and abuts the blade stop surface, to prevent air from flowing between the blade and the end of the frame. In the preferred embodiments the blade stop surfaces are integrally formed in each end panel.

US Patent:

20160265806, Sep 15, 2016

Filed:

Mar 9, 2015

Appl. No.:

14/641632

Inventors:

- Stittsville, CA
Stephen Dane CAREY - LaVergne TN, US

Assignee:

T.A. MORRISON & CO. INC. - Stittsville

International Classification:

F24F 13/14

Abstract:

A backdraft damper for permitting a flow of air in an outflow direction and preventing the flow of air in a backdraft direction has a frame provided with a transverse opening allowing the passage of air through the frame. One or more blades extend across the frame and are mounted to the frame about a central portion by pivot members, for rotation between open and closed positions. Each blade comprises a blade body having a leading portion upstream of the central portion, the leading portion of the blade body comprising a channel, a trailing portion downstream of the central portion, the trailing portion of the blade having a larger surface area than the leading portion and comprising a seal disposed adjacent to a distal edge of the trailing portion, for sealing against either the leading portion of an adjacent blade or a blade stop projecting from the frame, and a counterweight disposed in the channel, whereby the counterweight balances the blade such that the blade is biased to the closed position by gravity and movable to the open position by the force of air flowing through the frame in the outflow direction.

US Patent:

20160116184, Apr 28, 2016

Filed:

Oct 28, 2014

Appl. No.:

14/525797

Inventors:

- Stittsville, CA
Stephen Dane CAREY - LaVergne TN, US

Assignee:

T.A. MORRISON & COMPANY, INC. - Stittsville

International Classification:

F24F 13/14

Abstract:

A damper comprises a generally rectangular frame extending between opposed open faces and defining an airflow region. One or more damper blades comprises a substantially air-impermeable vane pivotally mounted between the sides of the frame and pivotable between an open position and a closed position. In the closed position an edge of the adjacent blade abuts a blade stop surface formed along each end, such that in the closed position one edge of the blade adjacent to each end of the frame extends into a recess and abuts the blade stop surface, to prevent air from flowing between the blade and the end of the frame. In the preferred embodiments the blade stop surfaces are integrally formed in each end panel.