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:
Aug. 22, 1978
Filed:
Jan. 16, 1978
David M Williams, Davenport, IA (US);
Other;
Abstract
A passively-actuated visual warning reflector device for providing a 'flashing', oscillating, or fluctuating visual signal, the invention is readily adapted to be mounted to a moving vehicle, particularly the side of a train car, to warn of the presence of the vehicle at route intersections and crossings. The present reflector device is comprised of a reflective or luminous substrate member attached to a surface of either a vehicle or a stationary structure, an apertured disk member being mounted in superimposed relation to the reflective member for swinging movement relative thereto, thereby partially obscuring varying portions of the reflective member on movement of the disk member to provide the effect of an 'on-off' light signal. The disk member is provided with circumferential flanges which catch air currents and cause the disk member to swing relative to the reflective member.