The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 29, 1993
Filed:
Apr. 01, 1992
Thomas Angelini, Sebring, OH (US);
Terry L Crock, Massillon, OH (US);
GMI Holdings, Inc., Alliance, OH (US);
Abstract
A door operator for a reversibly operable door, such as a garage door includes a frame, a motor on the frame, a flexible drive member connected to the motor, and a carriage is mounted for movement along the frame. The carriage moves generally parallel to a portion of the frame and is attached to the door to open and close the door by movement of the carriage along the frame. The carriage can be selectively engaged and disengaged from the flexible drive member using an actuating member extending from the carriage. The carriage and the flexible drive member are engaged and disengaged upon successive motions of the actuating member in a direction substantially perpendicular to the direction of travel of the carriage. The same motion of the actuating member is used to both engage and disengage the mechanism, with successive actions performing the engagement and the disengagement, so that it is not necessary for the user to memorize a complicated engagement or disengagement procedure in order to perform the operation. The mechanism may include a lever bar that provides leverage to the engaging and disengaging action, so that the force applied by the user to the vertically extending actuating member is increased to overcome any resistance resulting from the load on the carriage. The carriage may be adapted for use with an enclosed rail or frame extension and may be comprised of multiple parts that may be disassembled, permitting the carriage to be removed from the frame at any location and eliminating the need for removal of the carriage only through the end of the frame.