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:
May. 14, 2002
Filed:
Jul. 21, 2000
Johan Dawid Kruger, Gauteng, ZA;
Christopher Gordon Gervase Turner, Gauteng, ZA;
Andries Petrus Cronje Fourle, Gauteng, ZA;
Herman Pieterse, Gauteng, ZA;
Supersensor (Proprietary) Limited, Gauteng, ZA;
Abstract
A spacer for items includes a waveguide for radio frequency signals and a crate or pallet. When items to in an array are spaced with such waveguides, signals from an interrogator of an RF electronic identification system are guided via the waveguide to transponders to of the system mounted on the items. Response signals from the transponders are similarly guided in the reverse direction, so that the transponders may be read. The spacer, arrangement and methods according to the invention alleviate the problems presented by an RF barrier in prior art systems.