US Patent Issued to Schlage Lock on April 8 for "Motorized latch retraction with return boost" (American, Indian Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,231, issued on April 8, was assigned to Schlage Lock Co. LLC (Carmel, Ind.).

"Motorized latch retraction with return boost" was invented by Paul R. Arlinghaus (Fishers, Ind.), Evan Ballard (Noblesville, Ind.), Suresha Chandrasekhara (Bangarapet Taluk, India) and Eric Hoiland (Carmel, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An exemplary electronic actuator assembly is configured for use with a pushbar assembly having a drive assembly operable to retract a latchbolt, and includes an input shaft, a motor, and a boost spring. The motor has a retracting state in which the motor drives the input shaft from a proximal position to a distal posit...