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:
Mar. 31, 1987
Filed:
Jul. 02, 1985
Applicant:
Inventors:
Angel P Bezos, Montgomery County, MD (US);
Emilio A Fernandez, Fairfax County, VA (US);
Assignee:
Pulse Electronics, Inc., Rockville, MD (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60Q / ;
U.S. Cl.
CPC ...
340 87 ; 340 82 ; 340 84 ; 340103 ; 3401 / ; 340641 ; 340331 ; 340 50 ; 340762 ; 340782 ; 34081503 ; 362800 ; 357 76 ; 307 / ; 3152 / ;
Abstract
A marker light using an array (2) of light emitting diodes (12) in combination with lenses (3) provides a light beam of required intensity, shape and color for railroad applications. The light emitting diodes are arranged in various configurations to form the array (2). The lenses may be Fresnel lenses. Control circuitry (C) energizes the light emitting diodes at predetermined or variable flashing rates. Sensing circuitry (222) senses the failure of light emitting diodes in the array and provides an indication of such failure.