Brunn Air Systems, Memphis, TN announced on September 6, 2017 that it has been awarded U.S. Patent US 9,725,852 B1 for a pneumatic dust hood with plug preventer. In order to prevent dust accumulation on paper and tissue machines, dust extraction hoods are placed at strategic locations on the machines. Because modern machines operate at such high speeds, breakage of the web is not uncommon. When the web breaks, the shredded tails of the web and other larger pieces of tissue c