ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,243, issued on Jan. 27.
"Volume damper insert" was invented by Balraj Banger (Guelph, Canada) and Sarabjit Banger (Guelph, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a versatile and enhanced performance volume damper apparatus for the HVAC industry. In particular, the present invention provides ease of installation in the air supply boot or pipe or duct of a new HVAC system or for retrofit applications where an existing volume damper has failed or is ineffective. The present invention is not restricted by the geometry of the HVAC structures at the site of the installation. Once installed, the operation of th...