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:
Aug. 15, 2006
Filed:
Jul. 01, 2002
Russell N. Bigelow, Half Moon Bay, CA (US);
Stevan Polak, Aptos, CA (US);
James Long, Sunnyvale, CA (US);
Joseph Shtargot, Foster City, CA (US);
Russell N. Bigelow, Half Moon Bay, CA (US);
Stevan Polak, Aptos, CA (US);
James Long, Sunnyvale, CA (US);
Joseph Shtargot, Foster City, CA (US);
Metrotech Corporation, Santa Clara, CA (US);
Abstract
A transmitter for a line locator system that controls the electrical current, voltage or power applied to the target line is disclosed. Control of the electrical output of the transmitter can be achieved passively or by means of a feedback control system. A transmitter connected directly to a line can include an operator control and monitoring of current being supplied to a line to be located. Some transmitters include a current regulating circuit that controls current supplied to a line. In some transmitters, feedback controllers and feedback loops are used to regulate output current, voltage or power. Some control loops are based on monitoring currents in circuits; some control loops monitor power output from an inductive mode transmitter antenna. An inductively coupled transmitter with power output control is also disclosed.