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. 02, 1990
Filed:
Mar. 06, 1989
Robert A Simms, Phoenix, AZ (US);
Murasa International, Long Beach, CA (US);
Abstract
A safety shut-off protection system is provided for a light responsive system such as video cameras, image intensifiers, thermal imagers, or the like. The light responsive system further includes several series-connected, normally-closed, light responsive photoelectric Darlington safety switches. These safety switches are located to receive light along with the light responsive systems. Light exceeding a threshold intensity impinging on any one of the Darlington safety switches causes such a switch to operate to deactivate the light sensitive system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile