Patent ID: 8991881
Filing Date: 2015-03-31
Classification: E05B,Y10S,Y10T

Abstract:
1. An anti-ligative ergonomic doorknob system for a hinge-mounted door, said system comprising: a lever having a sloped outer surface and a rotary-shank connected to one end of the lever, the rotary shank configured to move a latchbolt between latched and unlatched positions; a backing plate extending from the lever; an escutcheon-plate on which the lever and backing plate are disposed; and a recess or groove forming a partial-circle in the escutcheon-plate and retaining an end of the lever or backing plate opposite the rotary shank as the lever rotates to prevent ensnarement of a cord under the lever or backing plate; the sloped outer surface of the lever configured to prevent frictional ensnarement of the cord when placed on or around the doorknob or in a configuration that uses an upper surface, side surface, or bottom surface of the door in conjunction with the doorknob.