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:
Aug. 24, 1999
Filed:
Mar. 06, 1998
Moscow K Richmond, Inglewood, CA (US);
Doorking, Inc., Inglewood, CA (US);
Abstract
A gate operator which provides for an opening and closing movement of a gate in response to an external opening and closing signal. The gate operator of the invention cushions the movement and reduces the impact against a fixed member at the fully opened and/or fully closed positions with a magnetically operable gate repelling and gate attracting arrangement. The repelling and attracting arrangement functions as a switching system and comprises a first magnetically operable member, such as a permanent magnetic, on a fixed member at the end position, or otherwise on the gate, and an electromagnet on the other of the fixed member or gate. In this way, the magnetically operable system applies a momentary force to the gate in opposition to the movement to that end position and then releases the force to reduce impact with any abutment at that end position. The magnetic force is then reversed and provides a magnetic locking action when the gate is at that end position.