ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,888, issued on March 18, was assigned to Delta Industrial Services Inc. (Minneapolis).
"Reciprocating sealer for web converters" was invented by David Schiebout (Brainerd, Minn.) and Jeffrey T. Bruin (Anoka, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Various device embodiments perform a sealing operation on a moving web, and comprise, among other things a plate assembly with an air cylinder assembly. The air cylinder assembly comprises a mount, a back plate, at least one air cylinder positioned between the mount and the back plate. The first plate assembly further includes a linear servo motor for linearly moving the air cylinder assembly...