ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,054, issued on March 17, was assigned to Van der Graaf Inc. (Brampton, Canada).
"Conveyor drive roller with pressure relief means" was invented by Alexander D. Kanaris (Richmond Hill, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A conveyor drive roller for a conveyor system. The conveyor drive roller has a hollow drum rotatably connected to a first stationary shaft and a second stationary shaft, and defines a sealed chamber. The chamber at least partially encloses means to rotate the hollow drum about the first and second stationary shafts. A pressure relief valve is positioned on the conveyor drive roller in fluid communication with the i...