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:
Oct. 31, 2017
Filed:
Jul. 13, 2015
Applicant:
Strata Safety Products, Llc, Sandy Springs, GA (US);
Inventor:
Larry D. Frederick, Huntsville, AL (US);
Assignee:
Strata Safety Products, LLC, Sandy Springs, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 7/14 (2006.01); G01R 33/02 (2006.01); G08B 21/02 (2006.01); G08G 1/16 (2006.01); G08B 21/22 (2006.01);
U.S. Cl.
CPC ...
G08B 21/22 (2013.01); G01R 33/0206 (2013.01); G08B 21/0275 (2013.01); G08G 1/163 (2013.01);
Abstract
This disclosure provides a method and system for extending the capability of a proximity detection system that is based on use of low frequency magnetic fields, to avoid conflicts in crowded work sites. The improvement is attained by combining the advantages of these low frequency magnetic fields with the advantages of much higher frequency, radiated (RF) signals that are controlled to be produced at the same time, concurrent with each other, in a coordinated and/or synchronous manner.