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:
Sep. 03, 1996
Filed:
Feb. 14, 1994
John R Toman, Manchester, MO (US);
Other;
Abstract
An assembly for detecting and signalling when an object enters a work zone including a plurality of transmitter-sensor pairs serially connected along a section of the work zone perimeter for detecting when an object passes therethrough. Once an object is detected, an optical warning signal is activated. The optical warning signal includes a primary strobe and a plurality of relay strobes positioned throughout the work zone. The primary strobe flashes at a predetermined flash rate which is detected by a photoelectric sensor in a nearby relay strobe. The nearby relay strobe begins flashing at the predetermined flash rate thereby activating another relay strobe in close proximity. This cascading strobe effect saturates the work zone.