IP Library › Granted Patent US 12,724,044
Granted Patent B2
US 12,724,044 · App. 19/314,534 · Granted Sep 1, 2026

Energy detection warning device

Inventors: John Wayne Thompson (Coeur d' Alene, ID); Timothy Ledford (Coeur d'Alene, ID); Brandon Jon Bledsoe (Coeur d'Alene, ID)
Assignee: Safeguard Equipment, Inc.
G01R19/155G01R15/16G01R15/18G01R29/085G08B7/06G08B21/02G08B21/182G01R19/15G01R29/0857
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Quick Facts
Patent No.
US 12,724,044
App. No.
19/314,534
Granted
Sep 1, 2026
Kind
B2
Abstract

A device includes a housing, one or more sensors configured to detect at least one of a voltage or a current in proximity to the device, one or more lighting elements configured to output light responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more speakers configured to output audio responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more network interfaces configured to communicatively couple the device to one or more additional devices, and one or more fastening mechanisms configured to secure the device to a surface.

Claims (70)

1 . A wearable device comprising:

a printed circuit board (PCB);

a first antenna operatively coupled to the PCB;

a second antenna operatively coupled to the PCB;

an indicator operatively coupled to the PCB, the indicator configured to provide an indication associated with a detected electric field;

a housing configured to at least partially enclose the PCB, the first antenna, the second antenna, and the indicator; and

a biasable clip coupled to the housing, the biasable clip being biased toward a closed position and configured to releasably secure the wearable device to at least one of a garment or an accessory worn by a user, the biasable clip including:

a first arm disposed adjacent to a first surface of the housing, and

a second arm disposed adjacent to a second surface of the housing.

2 . The wearable device of claim 1 , wherein the indication is based at least in part on at least one of:

first data generated by the first antenna; or

second data generated by the second antenna.

3 . The wearable device of claim 1 , wherein the biasable clip is generally L-shaped.

4 . The wearable device of claim 1 , wherein:

the indicator comprises a plurality of visual indicators; and

the indication comprises visual light.

5 . The wearable device of claim 4 , wherein the visual light is output from a third surface of the housing, the third surface being opposite the first surface.

6 . The wearable device of claim 1 , wherein:

the indicator comprises a plurality of visual indicators arranged in a row; and

sequential illumination of the plurality of visual indicators is associated with a directionality of the detected electric field.

7 . The wearable device of claim 1 , wherein the indication is associated with a strength of the detected electric field.

8 . A device comprising:

a housing;

a printed circuit board (PCB) disposed at least partially within the housing, the PCB including a first edge and a second edge opposite the first edge;

a first antenna mounted to the PCB and disposed at least partially within the housing, the first antenna being disposed at or along the first edge;

a second antenna mounted to the PCB and disposed at least partially within the housing, the second antenna being disposed at or along the first edge;

a plurality of visual indicators arranged as a row on the PCB;

a switch mounted to the PCB, the switch being located more proximate to the second edge than the first antenna, the second antenna, and the plurality of visual indicators;

a clip coupled to the housing;

one or more processors; and

one or more computer-readable media storing instructions that, when executed, cause the one or more processors to perform operations comprising:

receiving, from the first antenna, a first signal,

receiving, from the second antenna, a second signal,

determining, based at least in part on the first signal or the second signal, a strength of an electric field, and

causing, via the plurality of visual indicators, output of a visual indication associated with at least one of:

the strength of the electric field, or

the electric field.

9 . The device of claim 8 , wherein the clip includes:

a first arm disposed adjacent to a first side of the housing; and

a second arm disposed adjacent to a second side of the housing.

10 . The device of claim 9 , wherein the visual indication is output on a third side of the housing, the third side being opposite the first side.

11 . The device of claim 8 , wherein the visual indication is associated with a directionality of the electric field.

12 . The device of claim 8 , wherein the clip secures the device to a hardhat.

13 . The device of claim 8 , further comprising an audio indicator, wherein the operations further comprise causing, via the audio indicator, output of an audible indication associated with the at least one of:

the strength of the electric field, or

the electric field.

14 . The device of claim 8 , wherein the clip comprises a biasable clip.

15 . A wearable detector comprising:

a first antenna;

a second antenna;

a plurality of visual indicators arranged as a row, the plurality of visual indicators configured to provide a visual indication associated with a strength of an electric field;

a button;

a housing configured to house the first antenna, the second antenna, the plurality of visual indicators, and the button, wherein the plurality of visual indicators and the button are disposed on a first side of the housing; and

a clip including:

a first arm coupled to or extending from a second side of the housing, and

a second arm extending from the first arm and disposed adjacent to a third side of the housing, the third side of the housing being opposite the first side.

16 . The wearable detector of claim 15 , wherein at least one of:

the visual indication is associated with a directionality of the electric field; or

the plurality of visual indicators is configured to provide a second visual indication associated with the directionality of the electric field.

17 . The wearable detector of claim 15 , wherein sequential illumination of at least two of the plurality of visual indicators is associated with a directionality of the electric field.

18 . The wearable detector of claim 15 , wherein the plurality of visual indicators is configured to provide the visual indication associated with the strength of the electric field based at least in part on the strength of the electric field being greater than a threshold.

19 . The wearable detector of claim 15 , wherein:

the first antenna is configured to generate a first signal or first data;

the second antenna is configured to generate a second signal or second data; and

the plurality of visual indicators is configured to provide the visual indication based at least in part on at least one of:

the first signal,

the first data,

the second signal, or

the second data.

20 . The wearable detector of claim 15 , wherein the plurality of visual indicators are located more proximate to the second side of the housing than the button.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 29, 2025
From: THOMPSON, JOHN WAYNE; LEDFORD, TIMOTHY; BLEDSOE, BRANDON JON
To: SAFEGUARD EQUIPMENT, INC.
Reel/Frame 072775/0034 →
Continuity (8)
Continuation 19040646 · Jan 29, 2025
Continuation 18216413 · Jun 29, 2023
Continuation 17746682 · May 17, 2022
Continuation 17322343 · May 17, 2021
Division 15809958 · Nov 10, 2017
Provisional Application 62534922 · Jul 20, 2017
Provisional Application 62432817 · Dec 12, 2016
Related Publication 20250389758A1 · Dec 25, 2025
References Cited (79)
US 4255710A · Weber · 1981 [cited by applicant]
US 4295095A · Thomas et al. · 1981 [cited by applicant]
US 5144227A · Shaw · 1992 [cited by applicant]
US 5168265A · Aslan · 1992 [cited by examiner]
US 5281947A · Durley et al. · 1994 [cited by applicant]
US 5543777A · Vane · 1996 [cited by applicant]
US 5939986A · Schiffbauer · 1999 [cited by examiner]
US 6329924B1 · McNulty · 2001 [cited by applicant]
US 6788215B1 · White · 2004 [cited by applicant]
US 6998832B1 · McNulty · 2006 [cited by applicant]
US 7339379B2 · Thompson et al. · 2008 [cited by applicant]
US 8193802B2 · Jones et al. · 2012 [cited by applicant]
US 8710979B2 · Frederick · 2014 [cited by applicant]
US 8786447B1 · Wise · 2014 [cited by applicant]
US 9280885B2 · Frederick · 2016 [cited by applicant]
US 9494623B2 · McNulty · 2016 [cited by applicant]
US 9494632B1 · McNulty · 2016 [cited by applicant]
US 9501930B2 · Smith et al. · 2016 [cited by applicant]
US 10650655B2 · Royal et al. · 2020 [cited by applicant]
US 20070188321A1 · Stenlund · 2007 [cited by applicant]
US 20080246481A1 · Brune et al. · 2008 [cited by applicant]
US 20090033562A1 · Takeuchi · 2009 [cited by examiner]
US 20090171381A1 · Schmitz et al. · 2009 [cited by applicant]
US 20090322512A1 · Frederick · 2009 [cited by examiner]
US 20120089359A1 · Bishop et al. · 2012 [cited by applicant]
US 20130030732A1 · Shetty et al. · 2013 [cited by applicant]
US 20130060480A1 · Korhonen et al. · 2013 [cited by applicant]
US 20130278278A1 · Chapman · 2013 [cited by applicant]
US 20140232537A1 · Delprat · 2014 [cited by examiner]
US 20150091735A1 · Mcnulty · 2015 [cited by applicant]
US 20150097680A1 · Fadell et al. · 2015 [cited by applicant]
US 20160232779A1 · Sloo · 2016 [cited by applicant]
US 20170099888A1 · Flynn · 2017 [cited by applicant]
US 20180164350A1 · Thompson et al. · 2018 [cited by applicant]
US 20180293891A1 · Troutman et al. · 2018 [cited by applicant]
US 20210270873A1 · Thompson et al. · 2021 [cited by applicant]
US 20220276288A1 · Thompson et al. · 2022 [cited by applicant]
US 20230341443A1 · Thompson · 2023 [cited by applicant]
US 20240081457A1 · Budnik et al. · 2024 [cited by applicant]
US 20250244366A1 · Thompson · 2025 [cited by applicant]
CA 2846703A1 · 2015 [cited by applicant]
CN 1425900A · 2003 [cited by applicant]
CN 104062488 · 2014 [cited by applicant]
CN 204245263 · 2015 [cited by applicant]
CN 205567953 · 2016 [cited by applicant]
EP 1296150 · 2003 [cited by applicant]
EP 3312620 · 2018 [cited by applicant]
JP H07134183A · 1995 [cited by applicant]
JP 2000113349A · 2000 [cited by applicant]
JP 2005351710A · 2005 [cited by applicant]
JP 2006105640A · 2006 [cited by applicant]
JP 2010052860A · 2010 [cited by applicant]
JP 2011192033A · 2011 [cited by applicant]
WO WO2013069050A1 · 2015 [cited by applicant]
WO WO2015051039 · 2015 [cited by applicant]
The Chinese Office Action mailed on Nov. 4, 2020 for Chinese Patent Application No. 201780076658.2, a counter part of U.S. Appl. No. 15/809,958, 15 pages. [cited by applicant]
The Extended European Search Report mailed on Jan. 31, 2020 for European Patent Application No. 17880148.6, 9 pages. [cited by applicant]
The Extended European Search Report mailed Jul. 26, 2021 for European Patent Application No. 21170675.9, a foreign counterpart to U.S. Pat. No. 11,009,532, 9 pages. [cited by applicant]
Final Office Action dated Oct. 15, 2020 for U.S. Appl. No. 15/809,958, “Energy Detection Warning Device”, Thompson, 17 pages. [cited by applicant]
Indian Hearing Letter mailed Aug. 21, 2023 for Indian Patent Application No. 201917007983, a foreign counterpart to U.S. Pat. No. 11,009,532, 4 pages. [cited by applicant]
Indian Office Action mailed Sep. 22, 2021 for Indian Application No. 201917007983, a foreign counterpart to U.S. Pat. No. 11,009,532, 6 pages. [cited by applicant]
The PCT Search Report and Written Opinion mailed on Mar. 22, 2018, for PCT Application No. PCT/US17/61196, 10 pages. [cited by applicant]
Japanese Office Action mailed Dec. 21, 2021 for Japanese Patent Application No. 2019-551492, a foreign counterpart to U.S. Pat. No. 11,009,532, 12 pages. [cited by applicant]
Korean Office Action mailed Oct. 1, 2022 for Korean Patent Application No. 10-2019-7020239, a foreign counterpart to U.S. Pat. No. 11,009,532, 25 pages. [cited by applicant]
The Korean Office Action mailed Apr. 5, 2023 for Korean Patent Application No. 10-2019-7020239, a foreign counterpart to U.S. Pat. No. 11,009,532, 8 pages. [cited by applicant]
Lal, et al., “Self-powered Sensors with Radioisotope Source”, CN 101548401 A, 2009, 11 pgs. [cited by applicant]
Mingzhu, et al., “Special, high-voltage line type early warning device for safety helmet”, CN 104062488 A, State Gripd Shanghai Municipal Electric Power Co; 2014, 12 pgs. [cited by applicant]
Office Action for U.S. Appl. No. 18/216,413, mailed on Feb. 15, 2024, Thompson, “Energy Detection Warning Device”, 34 Pages. [cited by applicant]
Office Action for U.S. Appl. No. 17/746,682, mailed on Oct. 26, 2023, Thompson, “Energy Detection Warning Device”, 46 Pages. [cited by applicant]
Non Final Office Action dated Oct. 30, 2019 for U.S. Appl. No. 15/809,958 “Energy Detection Warning Device”, Thompson, 23 pages. [cited by applicant]
Office Action for U.S. Appl. No. 17/746,682, mailed on Feb. 2, 2023, Thompson, “Energy Detection Warning Device”, 29 pages. [cited by applicant]
Office Action for U.S. Appl. No. 17/746,682, mailed on May 8, 2024, Thompson, “Energy Detection Warning Device”, 42 pages. [cited by applicant]
Office Action for U.S. Appl. No. 17/746,682, mailed on Jun. 15, 2023, Thompson, “Energy Detection Warning Device”, 44 Pages. [cited by applicant]
Office Action for U.S. Appl. No. 17/322,343, mailed on Jun. 9, 2022, Thompson, “Energy Detection Warning Device”, 14 pages. [cited by applicant]
Office Action for U.S. Appl. No. 17/746,682, mailed on Aug. 29, 2024, Thompson, “Energy Detection Warning Device”, 31 pages. [cited by applicant]
Office Action for U.S. Appl. No. 18/216,413, mailed on Sep. 29, 2024, Thompson, “Energy Detection Warning Device”, 35 Pages. [cited by applicant]
Pan Chao, “Portable wave detector low frequency receiving voltage sensitivity perforance measure”, date published Jun. 25, 2003, Chinese Acad Inst Acoustics [CN], (2003). [cited by applicant]
The PCT Search Report and Witten Opinion mailed on Mar. 22, 2018, for PCT Application No. PCT/US17/61196, 10 pages. [cited by applicant]
Tomita, et al. “High Voltage Detector”, Nat Inst of Occupation Safety & Health Japan, Kasuga Electric Co, JP 2011192033 A; Sep. 29, 2011, 18 pgs. [cited by applicant]