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:
May. 01, 1990
Filed:
May. 01, 1989
Dennis W Waggamon, North Canton, OH (US);
Louis G Whitaker, Alliance, OH (US);
Genie Manufacturing, Inc., Akron, OH (US);
Abstract
A safety system is disclosed for universal attachment to existing garage door openers. A transmitter of infrared energy transmits a beam laterally of the door opening to detect any obstruction to door closing movement. A safety control circuit is adapted for connection to the main control circuit of the existing garage door opener, the existing push button switch is disconnected from the main control circuit and connected to the new safety control circuit, a flexible cable or cord is connected for actual movement in accordance with movement of the door and is connected to the safety control circuit at a reel on which the cord is wound, and the safety control circuit determines if there is actual door movement and actual door closing movement, as well as being responsive to an obstruction to door closing movement to apply a signal to stop the door and then apply another signal to start the door in its opening movement.