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:
Apr. 27, 1976
Filed:
Jul. 09, 1973
Richard J Estrada, San Francisco, CA (US);
Other;
Abstract
A system for actuating an alarm and for stopping the engine of a vehicle when the vehicle driver starts to doze or fall asleep. The system includes a mercury switch attachable to the head of the driver, such as on a pair of eyeglasses, and the switch is coupled to a cable having a plug for insertion into the conventional cigarette lighter receptacle on the dashboard of the vehicle. A light flasher, a relay coil, and a buzzer are electrically coupled to the receptacle and energized simultaneously when the mercury switch closes upon movement of the head. The flasher and buzzer provide visual and audible alarms while the relay coil operates a normally closed switch for opening the ignition circuit of the vehicle to stop the engine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile