ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,323, issued on March 17.

"Baseball and softball hitting training device" was invented by Thomas Miller (Baltimore), Ricky D. Venters Jr. (Abingdon, Md.), Justin Mack (Ft. Howard, Md.), Samantha Verzi (Forest Hill, Md.) and Cyrus Etemad-Moghadam (Forest Hill, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is a baseball and softball hitting training device that prevents early arm extension, early wrist release, swinging the bat from the outside to the inside, throwing the back shoulder toward the plate, or otherwise casting the hands during a swing. The device comprises a support block with one or more grooves, a horizontal ...