US Patent Issued to PRISMA on Nov. 3 for "Coupling and locking device for synchronous doors of an elevator equipment" (Italian Inventor)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,609, issued on Nov. 3, was assigned to PRISMA S.P.A. (Sorbolo Mezzani, Italy).

"Coupling and locking device for synchronous doors of an elevator equipment" was invented by Antonio Zanella (Parma, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coupling and locking device for synchronous doors of an elevator. The device includes a pair of coupling blades movable on a base plate, a pair of rotating levers hinged to the coupling blades to form a parallelogram mechanism, and a hooking lever movable to engage a fixed component of the elevator. The hooking lever is connected to a first rotating lever by a rotor mechanism having a primary rotor rotat...