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:
Nov. 14, 2017
Filed:
Jul. 24, 2015
Cornerstone Research Group, Inc., Dayton, OH (US);
Bradley M. Doudican, Dayton, OH (US);
Patrick J. Hood, Bellbrook, OH (US);
CORNERSTONE RESEARCH GROUP, INC., Dayton, OH (US);
Abstract
A subterranean system including a tunnel network, a plurality of syntactic foam panels, and a wireless communications network is disclosed. The wireless communications network comprises a plurality of wireless transceivers positioned throughout the tunnel network. The wireless communication range defined by communicatively coupled transceivers is a function of signal strength attenuation in a wireless signal traveling between the communicatively coupled transceivers. The tunnel network comprises tunnel support structure that contributes to the signal strength attenuation and a plurality of support apertures formed in the tunnel support structure. The syntactic foam panels are secured to the tunnel support structure to cover at least some of the support apertures and the composition and configuration of the syntactic foam panels are such that the panels do not make a significant contribution to the signal strength attenuation between communicatively coupled transceivers.