ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,177, issued on June 3.
"Tension hinge pin for door hinges" was invented by Terry R. Krailo (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "Tension hinge pins are disclosed. The tension hinge pins include a body with a hollow interior, an opening into the hollow interior, and an expandable body positioned within the hollow interior. The tension hinge pins include an actuator positioned to engage the expandable body and actuate expansion of expandable body to expand at least a portion of the expandable body outward through the opening. The tension hinge pins can be installed in a hinge used for hanging doors."
The patent was filed on June 1, 2...