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, 1979
Filed:
Jun. 27, 1977
Applicant:
Inventors:
Warren R Wrege, Rochester, NY (US);
Ronald W Dinger, Rochester, NY (US);
Robert A Hagen, Rochester, NY (US);
Chester A Hard, III, Charlevoix, MI (US);
J T Barnes, Charlevoix, MI (US);
Assignee:
General Signal Corporation, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21S / ; F21V / ;
U.S. Cl.
CPC ...
362152 ; 362 76 ; 362291 ; 362337 ; 362340 ;
Abstract
An improved railroad crossing signal includes a deep dish parabolic reflector and an essentially flat plastic lens angled forward at the top relative to the axis of the reflector. The lens includes prism elements for laterally dispersing parallel light from the reflector more toward the crossing highway at near and far distances than toward the adjacent land. The lens also includes prism elements for vertically dispersing a portion of the light to produce uniform brightness before the signal.