DualDraw holds four US patents related to downdraft tables and air filtration equipment. Our patented technology sets DualDraw apart in the marketplace for industrial air filtration equipment. Two of the DualDraw patents focus on the design of the downdraft table work surface and its signature vented back stop. The other two patents focus on the compact, self-contained design of the DualDraw equipment.

The standard downdraft table work surface and vented back stop are perforated with hundreds of small perforations. Each perforation is spaced and sized uniformly from the next perforation. When air is drawn through these perforations, a vacuum is created and an even capture velocity is demonstrated across the DualDraw downdraft table work surface and vented back stop.

This symmetrical airflow across the work surface and vented back stop creates a uniform protective airflow across the entire downdraft table work surface. Thus, trained operators performing an application on the downdraft table work surface can be assured that their breathing zone is protected and cross contamination to other areas of their industrial facility will be minimized no matter where on the work surface their process is performed.


Photo of Standard Perforation Pattern on a DualDraw Downdraft Table Work Surface

Our other patents focus on the self-contained, compact nature of our design. Standard DualDraw equipment is designed to be dropped in place anywhere that has a power source nearby. All filtration is done locally on our standard units – there is no need to add expensive ducting and exhaust ports, or to fix the equipment in place. Even for processes that produce sparks, there are safety guards built in to the equipment for local capture.

For more information on these DualDraw US patents or to read them in their entirety online please click on the following links:

DualDraw Patent 5807414, Patent 6290740, Patent US20170128875A1, Patent US20170128872A1. Please call 1-800-977-2125 with questions.