IP Library › Granted Patent US 12,326,468
Granted Patent B2
US 12,326,468 · App. 18/371,363 · Granted Jun 10, 2025

Portable device with measuring leg for display of noise information in coordination with measured distance and transmission frequency selection

Inventors: Loc Viet Lam (Renton, WA); Albert W. Chau (Woodinville, WA)
Assignee: Merlin Technology Inc.
G01R29/26G01V3/15
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Quick Facts
Patent No.
US 12,326,468
App. No.
18/371,363
Granted
Jun 10, 2025
Kind
B2
Abstract

A portable device is described for use with a system in which a transmitter signal is transmitted by a transmitter from within the ground at a transmission frequency during an operational procedure. The portable device is configured for measuring electromagnetic noise. An extension leg supports a measurement wheel at a distal end such that the electromagnetic noise is measured on a measurement path along which the measurement wheel is rolled for use in selecting a transmission frequency. A display can be configured to display the electromagnetic noise as measured on the measurement path in coordination with measured distance.

Claims (23)

1. For use in conjunction with a system in which a transmitter is moved through the ground in a region during an operational procedure while transmitting a transmitter signal having a transmission frequency and said transmission frequency is selectable in a transmission frequency range and said region includes electromagnetic noise that can vary within said region and across said transmission frequency range, an apparatus comprising:

an extension leg having a first, distal end and an opposing end;

a measuring wheel supported for rotation at the distal end responsive to rolling upon a surface of the ground;

a sensor supported by the distal end to detect the rotation and generate a sensor output responsive to the rolling;

a portable device comprising:

a housing configured for removable attachment of the opposing end of the extension leg;

a receiver carried by the housing configured to measure the electromagnetic noise at least in said transmission frequency range in an absence of said transmitter signal; and

a processor for receiving the sensor output and for referencing the electromagnetic noise to a measurement path as the measuring wheel is rolled along the measurement path; and

a display for displaying the electromagnetic noise as measured on the measurement path in the transmission frequency range.

2. The apparatus of claim 1 , further comprising:

said processor configured to monitor the sensor output for establishing that the portable device is in one of a state of movement or a stationary state and configured to initiate a pause interval by suspending said monitoring of the electromagnetic noise responsive to said stationary state and, thereafter, resuming the monitoring of the electromagnetic noise responsive to said state of movement such that the electromagnetic noise that is present during the stationary state has no effect on an average frequency content of the electromagnetic noise.

3. For use in conjunction with a system in which a transmitter is moved through the ground in a region during an operational procedure while transmitting a transmitter signal having a transmission frequency and said transmission frequency is selectable in a transmission frequency range and said region includes electromagnetic noise that can vary within said region and across said transmission frequency range, a portable device comprising:

a housing configured for removable attachment of a proximate end of an extension leg, the extension leg including a length extending from the proximate end to a distal, opposing end, a measuring wheel supported for rotation at the distal end responsive to rolling upon a surface of the ground and a sensor supported by the distal end to detect the rotation and generate a sensor output responsive to the rolling;

a receiver carried by the housing configured for measuring the electromagnetic noise at least in said transmission frequency range in an absence of said transmitter signal; and

a processor for receiving the sensor output and collecting noise information from the receiver to measure the electromagnetic noise on a measurement path along which the measurement wheel is rolled for use in selecting the transmission frequency.

4. The portable device of claim 3 , further comprising:

said processor configured to monitor the sensor output for establishing that the portable device is in one of a state of movement or a stationary state and configured to initiate a pause interval by suspending said monitoring of the electromagnetic noise responsive to said stationary state and, thereafter, resuming the monitoring of the electromagnetic noise responsive to said state of movement such that the electromagnetic noise that is present during the stationary state has no effect on an average frequency content of the electromagnetic noise.

5. For use in conjunction with a system in which a transmitter is moved through the ground in a region during an operational procedure while transmitting a transmitter signal having a transmission frequency and said transmission frequency is selectable in a transmission frequency range and said region includes electromagnetic noise that can vary within said region and across said transmission frequency range, a portable device comprising:

a housing configured for removable attachment of a proximate end of an extension leg, the extension leg including a length extending from the proximate end to a distal, opposing end, a measuring wheel supported for rotation at the distal end responsive to rolling upon a surface of the ground and a sensor supported by the distal end to detect the rotation and generate a sensor output responsive to the rolling;

a receiver carried by the housing configured for measuring the electromagnetic noise at least in said transmission frequency range in an absence of said transmitter signal; and

a processor for receiving the sensor output and collecting noise information from the receiver to measure the electromagnetic noise on a measurement path along which the measurement wheel is rolled for use in selecting the transmission frequency.

6. The portable device of claim 5 , further comprising:

said processor configured to monitor the sensor output for establishing that the portable device is in one of a state of movement or a stationary state and configured to initiate a pause interval by suspending said monitoring of the electromagnetic noise responsive to said stationary state and, thereafter, resuming the monitoring of the electromagnetic noise responsive to said state of movement such that the electromagnetic noise that is present during the stationary state has no effect on an average frequency content of the electromagnetic noise.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 21, 2023
From: LAM, LOC VIET; CHAU, ALBERT W.
To: MERLIN TECHNOLOGY INC.
Reel/Frame 064989/0722 →
Continuity (7)
Continuation 17728980 · Apr 26, 2022
Continuation 17344895 · Jun 10, 2021
Continuation 16599110 · Oct 10, 2019
Continuation 15685790 · Aug 24, 2017
Continuation 14277873 · May 15, 2014
Division 12497990 · Jul 6, 2009
Related Publication 20240019478A1 · Jan 18, 2024
References Cited (170)
US 2251817A · Athy et al. · 1941 [cited by applicant]
US 3292143A · Russell · 1966 [cited by applicant]
US 3402348A · Hoehn et al. · 1968 [cited by applicant]
US 3746106A · McCulloghh et al. · 1973 [cited by applicant]
US 4041443A · Thigpen · 1977 [cited by applicant]
US 4351027A · Gay et al. · 1982 [cited by applicant]
US 4608480A · Bizot et al. · 1986 [cited by applicant]
US 4636758A · Mettoudi · 1987 [cited by applicant]
US 4710708A · Rorden et al. · 1987 [cited by applicant]
US 4928274A · Gilhousen et al. · 1990 [cited by applicant]
US 5204673A · Kyle et al. · 1993 [cited by applicant]
US 5361029A · Rider et al. · 1994 [cited by applicant]
US 5467083A · McDonald et al. · 1995 [cited by applicant]
US 5633589A · Mercer · 1997 [cited by applicant]
US 5663589A · Saitoh et al. · 1997 [cited by applicant]
US 5720354A · Stump et al. · 1998 [cited by applicant]
US 5855721A · Monteiro et al. · 1999 [cited by applicant]
US 5924953A · Rohs · 1999 [cited by applicant]
US 5926025A · Mercer · 1999 [cited by applicant]
US 5933008A · Mercer · 1999 [cited by applicant]
US 5963042A · Suyama et al. · 1999 [cited by applicant]
US 6005532A · Ng · 1999 [cited by applicant]
US 6057687A · Mercer · 2000 [cited by applicant]
US 6285190B1 · Brune et al. · 2001 [cited by applicant]
US 6417666B1 · Mercer · 2002 [cited by applicant]
US 6427784B1 · Archambeault et al. · 2002 [cited by applicant]
US 6496008B1 · Brune et al. · 2002 [cited by applicant]
US 6606032B1 · Fling · 2003 [cited by applicant]
US 6614360B1 · Leggett, III · 2003 [cited by examiner]
US 6727704B2 · Brune et al. · 2004 [cited by applicant]
US 6737867B2 · Brune et al. · 2004 [cited by applicant]
US 6756783B2 · Brune et al. · 2004 [cited by applicant]
US 6772091B1 · Roberts · 2004 [cited by applicant]
US 6776246B1 · Nickel et al. · 2004 [cited by applicant]
US 6801136B1 · Goodman et al. · 2004 [cited by applicant]
US 6985750B1 · Vicknair et al. · 2006 [cited by applicant]
US 7088105B2 · Mizuno · 2006 [cited by applicant]
US 7106194B2 · Nelson · 2006 [cited by applicant]
US 7150331B2 · Cole et al. · 2006 [cited by applicant]
US 7151375B2 · Mercer et al. · 2006 [cited by applicant]
US 7242225B2 · Klage · 2007 [cited by applicant]
US 7268696B2 · Rodney et al. · 2007 [cited by applicant]
US 7330653B1 · Roberts et al. · 2008 [cited by applicant]
US 7331409B2 · Cole et al. · 2008 [cited by applicant]
US 7495445B2 · Mercer · 2009 [cited by applicant]
US 7624816B2 · Cole et al. · 2009 [cited by applicant]
US 7733077B1 · Merewether · 2010 [cited by examiner]
US 7786731B2 · Cole et al. · 2010 [cited by applicant]
US 7926589B2 · Mercer · 2011 [cited by applicant]
US 8364406B2 · Gleitman · 2013 [cited by applicant]
US 8981780B2 · Cole et al. · 2015 [cited by applicant]
US 9274243B2 · Chau et al. · 2016 [cited by applicant]
US 9739140B2 · Zeller et al. · 2017 [cited by applicant]
US 11047896B2 · Lam · 2021 [cited by applicant]
US 11352876B2 · Zeller et al. · 2022 [cited by applicant]
US 20020105331A1 · Brune · 2002 [cited by examiner]
US 20030043768A1 · Chang et al. · 2003 [cited by applicant]
US 20040145502A1 · Thomson · 2004 [cited by applicant]
US 20040189305A1 · Brune et al. · 2004 [cited by applicant]
US 20050173153A1 · Alft et al. · 2005 [cited by applicant]
US 20060055556A1 · Memarzadeh et al. · 2006 [cited by applicant]
US 20060132136A1 · Mizuno · 2006 [cited by applicant]
US 20070040558A1 · Overby et al. · 2007 [cited by applicant]
US 20070257830A1 · Savage et al. · 2007 [cited by applicant]
US 20080068019A1 · Mercer · 2008 [cited by applicant]
US 20080315879A1 · Saha · 2008 [cited by applicant]
US 20090038850A1 · Brune et al. · 2009 [cited by applicant]
US 20100060285A1 · Pearson et al. · 2010 [cited by applicant]
US 20100141261A1 · Overby et al. · 2010 [cited by applicant]
US 20110001633A1 · Lam et al. · 2011 [cited by applicant]
US 20120037354A1 · McCoy et al. · 2012 [cited by applicant]
US 20130111306A1 · Chang et al. · 2013 [cited by applicant]
US 20130118810A1 · Mercer · 2013 [cited by applicant]
US 20130176139A1 · Chau et al. · 2013 [cited by applicant]
US 20140266770A1 · Chau et al. · 2014 [cited by applicant]
US 20140266771A1 · Chau et al. · 2014 [cited by applicant]
US 20160069180A1 · Zeller et al. · 2016 [cited by applicant]
US 20170075018A1 · Brune et al. · 2017 [cited by applicant]
US 20190017366A1 · Alaas et al. · 2019 [cited by applicant]
US 20200041553A1 · Lam et al. · 2020 [cited by applicant]
US 20220252654A1 · Lam et al. · 2022 [cited by applicant]
CN 1959432A · 2007 [cited by examiner]
CN 201705343U · 2011 [cited by applicant]
CN 101525998B · 2012 [cited by applicant]
EP 0873465A1 · 1998 [cited by applicant]
GB 2330204A · 1999 [cited by applicant]
JP 02021289 · 1990 [cited by applicant]
JP 2003078500A · 2003 [cited by applicant]
WO 9219981A1 · 1992 [cited by applicant]
WO 9404947A1 · 1994 [cited by applicant]
WO 9629615 · 1996 [cited by applicant]
WO 2005091899A3 · 2007 [cited by applicant]
WO 2007114923A2 · 2007 [cited by applicant]
WO 2013062949A1 · 2013 [cited by applicant]
WO 2013103875A1 · 2013 [cited by applicant]
Extended European Search Report for European Application No. 18825463.5 which is associated with International Application No. PCT/US2018/034207 which is associated with U.S. Appl. No. 15/635,884, filed Nov. 20, 2018, M… [cited by applicant]
Applicant's Response to Office Action in U.S. Appl. No. 17/501,438, dated Mar. 4, 2023. [cited by applicant]
Complaint in Case No. 4:22-cv-00173 in [cited by applicant]
Defendant's Initial Invalidity Contentions and Exhibits in Case No. 4:22-cv-00173 in [cited by applicant]
Defendant's Preliminary Claim Constructions and Evidence in Case No. 4:22-cv-00173 in [cited by applicant]
Defendant's Responsive Markman Brief in Case No. 4:22-cv-00173 in [cited by applicant]
Digital Control Incorporated, DigiTrak Eclipse inGround Positioning System (iGPS) Operator's Manual, Sep. 2007, Kent, Washington. [cited by applicant]
Digital Control Incorporated, DigiTrak Mark III Directional Drilling Locating System Operator's Manual, May 2008, Kent, Washington. [cited by applicant]
Digital Control Incorporated, DigiTrak Mark V Locating System Operator's Manual, Sep. 2006, Kent, Washington. [cited by applicant]
DigiTrak Drill Head Monitor, Operating Instructions, Revision 2, Aug. 1993. [cited by applicant]
DigiTrak Mark III Directional Drilling Locating System, Operator's Manual, Oct. 1999. [cited by applicant]
DigiTrak Mark IV Locating System, Operator's Manual, Jul. 2000. [cited by applicant]
Ditch Witch 750 Tracker/752 Tracker Operator's Manual, Sep. 2006. [cited by applicant]
Ditch Witch, 66TKR Operator's Manual, 1995. [cited by applicant]
Ditch Witch, 900R/T Series Operator's Manual, Sep. 2006. [cited by applicant]
Drill Track System 1 User Guide, Revision 1, Aug. 1997. [cited by applicant]
English and Google translations of the reference: The First Office Action of The State Intellectual Property Office of People's Republic of China for Chinese Application No. 201510696502.7 which is associated with U.S. … [cited by applicant]
English Translation of the reference: Shen Wei et al., “Design of HF Radar System with Noise Spectrum Monitoring”, Systems Engineering and Electronics, vol. 29, No. 10, pp. 1635-1637. [cited by applicant]
English translation of the reference: The Second Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 1… [cited by applicant]
Extended European Search Report for European Application No. 15838319.0 which is associated with International Application No. PCT/US2015/048692 which is associated with U.S. Appl. No. 14/845,231, filed Mar. 16, 2018, M… [cited by applicant]
Extended European Search Report for European Application No. 19179465.0 which is associated with International Application No. PCT/US2015/048692 which is associated with U.S. Appl. No. 14/845,231, filed Aug. 1, 2019, Th… [cited by applicant]
Extended European Search Report for European Application No. 22190409.7 which is associated with International Application No. PCT/US2015/048692 which is associated with U.S. Appl. No. 15/635,884, filed Nov. 15, 2022, M… [cited by applicant]
File History of U.S. Appl. No. 14/277,873 as of Jun. 6, 2018. [cited by applicant]
File History of U.S. Appl. No. 15/685,790 as of Jun. 6, 2018. [cited by applicant]
First Office Action for Application No. 201880019290.0 in the Peoples Republic of China which is associated with International Application No. PCT/US2018/034207 which is associated with U.S. Appl. No. 15/635,884, filed … [cited by applicant]
First Office Action from Intellectual Property India for India Application No. 201917035905 which is associated with International Application No. PCT/US2018/034207 which is associated with U.S. Appl. No. 15/635,884, fi… [cited by applicant]
International Preliminary Report on Patentability for International Application No. PCT/US2015/048692 which is associated with U.S. Appl. No. 14/845,231, filed Dec. 7, 2016, Moscow, Russia. [cited by applicant]
Kaufman, Clark, Central Iowa Company Accused of Acting as a Front for Chinese Manufacturer, Iowa Capital Dispatch, May 24, 2022. [cited by applicant]
Mole Map Operation Manual, Version 1.2D, Feb. 7, 2000. [cited by applicant]
New McLaughlin Drill Tracking System Includes Many Advanced Features, Underground Construction, Oct. 1, 2000. [cited by applicant]
Notice of Allowance with Allowed Claims from the State Intellectual Property Office of Peoples Republic of China for previously cited: Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/49… [cited by applicant]
Notice of Grant of Patent Right for Invention and Registration by The State Intellectual Property Office of People's Republic of China for Chinese Application No. 201010142007.9 which is associated with U.S. Appl. No. 1… [cited by applicant]
Notification After the Fourth Office Action of The State Intellectual Property Office of People's Republic of China for previously cited: Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12… [cited by applicant]
Office Action for U.S. Appl. No. 15/635,884, dated Nov. 16, 2018. [cited by applicant]
Office Action for U.S. Appl. No. 15/685,790, dated Feb. 13, 2019. [cited by applicant]
Office Action for U.S. Appl. No. 15/676,057 dated Apr. 12, 2019. [cited by applicant]
Office Action in U.S. Appl. No. 14/277,873, dated Feb. 4, 2019. [cited by applicant]
Office Action in U.S. Appl. No. 17/501,438, dated Oct. 5, 2022. [cited by applicant]
Plaintiff's Opening Claim Construction Brief in Case No. 4:22-cv-00173 in [cited by applicant]
Plaintiff's Preliminary Proposed Claim Constructions in Case No. 4:22-cv-00173 in [cited by applicant]
Plaintiff's Reply Claim Construction Brief in Case No. 4:22-cv-00173 in [cited by applicant]
Prosecution History of U.S. Appl. No. 12/497,990 (issued as U.S. Pat. No. 8,729,901) as of Jul. 23, 2018. [cited by applicant]
Prosecution History of U.S. Appl. No. 14/277,873, as of Jul. 23, 2018. [cited by applicant]
Prosecution History of U.S. Appl. No. 14/845,231 (now issued as U.S. Pat. No. 9,739,140), as of Jul. 23, 2018. [cited by applicant]
Prosecution History of U.S. Appl. No. 15/676,057, as of Jul. 23, 2018. [cited by applicant]
Prosecution History of U.S. Appl. No. 15/685,790, as of Jul. 23, 2018. [cited by applicant]
Prosecution History of U.S. Appl. No. 16/599,110, as of Oct. 22, 2020. [cited by applicant]
Radiodetection Drill Track User Manual, Revision 0, Jul. 1999. [cited by applicant]
Shen Wei et al., “Design of HF Radar System with Noise Spectrum Monitoring”, Systems Engineering and Electronics, vol. 29, No. 10, pp. 1635-1637, Oct. 2007. (English translation included). [cited by applicant]
Simon et al., Digital Communication Techniques, 1995, PTR Prentice Hall, Englewood Cliffs, New Jersey 07632, Chapter 4, p. 178-201. [cited by applicant]
The Fifth Office Action of the State Intellectual Property Office of People's Republic of China for previously cited: Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/497,990, filed Apr.… [cited by applicant]
The First Office Action of the Intellectual Property Office of India for Indian Application No. 201717006541 which is associated with U.S. Appl. No. 14/845,231, filed Nov. 14, 2019 (English Translation Included). [cited by applicant]
The First Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/497,990, filed May 17, 2017. (Machine… [cited by applicant]
The First Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201580046941.1 which is associated with International Application No. PCT/US2015/048692 which i… [cited by applicant]
The First Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201010142007.9 which is associated with U.S. Appl. No. 12/497,990, filed Oct. 26, 2012. (Englis… [cited by applicant]
The First Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201810941251.8 which is associated with International Application No. PCT/US2015/048692 which i… [cited by applicant]
The Fourth Office Action of the State Intellectual Property Office of People's Republic of China for previously cited: Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/497,990, filed May… [cited by applicant]
The International Search Report and the Written Opinion of the International Searching Authority for International Application No. PCT/US2015/048692 which is associated with U.S. Appl. No. 14/845,231, filed Dec. 10, 201… [cited by applicant]
The International Search Report and Written Opinion for PCT Application No. PCT/US2018/034207 which is associated with U.S. Appl. No. 15/635,884, filed Sep. 13, 2018. [cited by applicant]
The Second Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/497,990, filed Jan. 19, 2018. (Engli… [cited by applicant]
The Second Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201580046941.1 which is associated with International Application No. PCT/US2015/048692 which … [cited by applicant]
The Second Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 201010142007.9 which is associated with U.S. Appl. No. 12/497,990, filed Sep. 6, 2013. (Englis… [cited by applicant]
The Sixth Office Action of the State Intellectual Property Office of People's Republic of China for previously cited: Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/497,990, filed Oct.… [cited by applicant]
The Third Office Action of the State Intellectual Property Office of People's Republic of China for previously cited: Chinese Application No. 201510696502.7 which is associated with U.S. Appl. No. 12/497,990, filed Sep.… [cited by applicant]
Underground Magnetics Answer in Case No. 4:22-cv-00173 in [cited by applicant]
Updated Prosecution History of U.S. Appl. No. 14/277,873, as of Apr. 17, 2019. [cited by applicant]
Updated Prosecution History of U.S. Appl. No. 14/277,873, as of Feb. 16, 2019. [cited by applicant]
Updated Prosecution History of U.S. Appl. No. 14/277,873, as of Oct. 23, 2019. [cited by applicant]
Updated Prosecution History of U.S. Appl. No. 14/277,873, as of Sep. 12, 2019. [cited by applicant]
Updated Prosecution History of U.S. Appl. No. 15/676,057 as of Dec. 27, 2020. [cited by applicant]
Updated Prosecution History of U.S. Appl. No. 15/685,790, as of Apr. 17, 2019. [cited by applicant]
Wanshun Wang, et al, Research and Information System of High-Resolution Underground Pipeline Detection Technology, Aug. 2005. [cited by applicant]
Office Action for U.S. Appl. No. 17/552,226, dated Feb. 29, 2024. [cited by applicant]
Office Action for U.S. Appl. No. 18/380,971, filed May 1, 2024. [cited by applicant]
The First Office Action of the State Intellectual Property Office of People's Republic of China for Chinese Application No. 202110767425.5 which is associated with International Application No. PCT/US2018/034207 which i… [cited by applicant]