Fujitec America Inc.

Mark H Bayyari

Richard L Fahl

Mark Thomas Davidson

Takeshi Sugimoto

An elevator car door opening and closing apparatus is taught having a clutch assembly carried by each car door for coupling with a landing door locking and unlocking assembly whereby the car and landing doors open and close simultaneously. The clutch assembly includes a four bar mechanical expanding and collapsing parallelogram linkage which engages, unlocks, and opens the landing door. Mechanical linkage is also attached to the parallelogram linkage whereby the elevator car doors may only be forced opened a limited amount if the car is stalled between landing sites.

Growing community of inventors

Lebanon, OH, United States of America

Mark H Bayyari