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. 16, 2007
Filed:
Feb. 06, 2004
Colin N. Gunn, Victoria, CA;
Simon H. Lightbody, Victoria, CA;
J. Bradford Forth, Victoria, CA;
Martin A. Hancock, Victoria, CA;
Geoffrey T. Hyatt, Victoria, CA;
Colin N. Gunn, Victoria, CA;
Simon H. Lightbody, Victoria, CA;
J. Bradford Forth, Victoria, CA;
Martin A. Hancock, Victoria, CA;
Geoffrey T. Hyatt, Victoria, CA;
Power Measurement, Ltd., Saanichton, CA;
Abstract
Devices that couple to high voltage transmission lines obtain power themselves using the body capacitance of an element of the devices. The devices generate a comparatively lower voltage from the current flowing between the high voltage line and the element of the device that generates the body capacitance. The devices can be used to operate sensors that monitor the transmission lines or parameters of the power distribution system, such as current, line temperature, vibration, and the like. The devices can also be used as indicators, such as aircraft warning lights, information signs, etc. In addition, the devices can operate as RF transmission/reception or repeater devices, radar devices, mesh networking nodes, video/audio surveillance, sound emitting devices for scaring animals, drones that traverse the power line, etc. Because the devices operate in response to line voltage rather than current, the devices are reliable even in low current conditions.