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. 23, 2012
Filed:
Jul. 10, 2007
James P. Barrett, Liberty Lake, WA (US);
James P. Barrett, Liberty Lake, WA (US);
Venture Corporation Limited, Singapore, SG;
Abstract
An intrinsically safe accurate location information network for personnel and assets in underground mines, including wireless access points and subnetwork controllers, active wireless locator/messenger tags, network controller(s), and enterprise servers running application control software. The wireless access points are installed in mine entries and crosscuts and track the active wireless locator/messenger tags. The active tags may be worn by mine personnel or installed in mining equipment. The network subsystems form relay networks that wirelessly carry telemetry and control data without the need to penetrate the earth. The subsystems determine the location of persons and assets underground and monitor safety-related information, which can be used for disaster avoidance, early warning of impending disaster, and improved rescue effectiveness.