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:
Oct. 12, 1993
Filed:
Mar. 10, 1992
Richard J Richardson, Simi Valley, CA (US);
Charles E Crown, San Fernando, CA (US);
Anthony's Manufacturing Company, Inc., San Fernando, CA (US);
Abstract
A self return mechanism for automatically closing or opening a closure, preferably having a movable door supported during movement by a door frame, the door having a braking element mounted to the top edge of the door, and a door return element. The door return element has one end coupled to the door frame structure and its other end coupled to the door and has an intermediate segment oriented to pass through the braking element and around a portion of the grooved circumference of a pulley wheel. The door return element is preferably an elastic element having an outer dimension that changes as the door moves from an opened position to a closed position. The self return mechanism controls the acceleration and deceleration of the door as it is automatically closed, returns the sliding door to its closed position when it is opened only partially, allows for easy removal and replacement of the door from the door frame structure and is inexpensive to manufacture and simple to assemble.