Roller-hinge assembly for retractable overhead door

摘要

This invention pertains to a retractable roller-hinge assembly for use with retractable overhead doors. More particularly, this invention relates to a novel roller-hinge assembly which when installed on conventional retractable overhead doors, such as garage doors warehouse doors or truck doors, enables the door panels to pull away more quickly from the door frame as the overhead door is raised, or lowered. A hinge assembly for connecting upper and lower panels of a retractable overhead door comprising: (a) upper devices for securing to the upper panel; (b) lower devices adapted for securing to the lower panel, the lower devices being hingedly connected by a pivotal axis to the upper devices; (c) roller and roller axle devices rotatably connected to the upper devices, said roller and axle devices being adapted to move towards the lower devices as the upper devices are pivoted about the pivotal axis.