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:
Feb. 20, 2024
Filed:
Jan. 25, 2021
Applicant:
Merlin Technology Inc., Kent, WA (US);
Inventors:
John E. Mercer, Gig Harbor, WA (US);
Albert W. Chau, Woodinville, WA (US);
Assignee:
Merlin Technology Inc., Kent, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/08 (2006.01); G01V 3/12 (2006.01); G01V 3/17 (2006.01); G01V 3/165 (2006.01);
U.S. Cl.
CPC ...
G01V 3/08 (2013.01); G01V 3/12 (2013.01); G01V 3/165 (2013.01); G01V 3/17 (2013.01);
Abstract
Discriminating between a cable locating signal and a false cable locating signal is described. A reference signal, which contains a locating signal frequency impressed on it, is transmitted in a way which provides for detection of a phase shift between the locating signal and the false locating signal. Based on the phase shift, a receiver is used to distinguish the locating signal from the false locating signal.