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:
Dec. 15, 1987
Filed:
Oct. 28, 1985
Applicant:
Inventor:
Julian A McDermott, Ridgewood, NY (US);
Assignee:
Julian A. McDermott Corp., Ridgewood, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340654 ; 340660 ; 246129 ; 324133 ;
Abstract
Apparatus for warning workers on electrified railroad tracks that the third rail is live having visual and/or aural alarms, sensing electrodes or contactors for deriving power for activating alarms from the third rail, and circuits for providing visual and/or aural alarms indicating that the contactors have not made proper contact with the rails to assure the workers that the warning apparatus is properly operating as a high voltage protector.
McDermott, Julian. (1987). High voltage protector (U.S. Patent No. 4713653). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4713653
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile