IP Library › Granted Patent US 1,132,396
Granted Patent S1
US 1,132,396 · App. 29/987,522 · Granted Jun 30, 2026

Strength indicator for a hand grip strengthener

Inventor: Yiming Gao (Shenzhen City, CN)
Assignee: MACBO TECHNOLOGIES LLC
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Quick Facts
Patent No.
US 1,132,396
App. No.
29/987,522
Granted
Jun 30, 2026
Kind
S1
Claims (1)

The ornamental design for a strength indicator for a hand grip strengthener as shown and described.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2025
From: GAO, YIMING
To: MACBO TECHNOLOGIES LLC
Reel/Frame 069990/0900 →
Continuity (1)
Continuation In Part 29952351 · Jul 15, 2024
References Cited (78)
US 1623869A · Giraldi · 1927 [cited by examiner]
US D106888S · Hess · 1937 [cited by examiner]
US D138285S · Schneiderwind · 1944 [cited by examiner]
US D264737S · Cooper · 1982 [cited by examiner]
US 4433364A · Noble · 1984 [cited by examiner]
US 4753434A · Salvino · 1988 [cited by examiner]
US 5060934A · Winston · 1991 [cited by examiner]
US 5308299A · Winston · 1994 [cited by examiner]
US 5529551A · Chin · 1996 [cited by examiner]
US D385319S · Lucas · 1997 [cited by examiner]
US D403723S · Coe · 1999 [cited by examiner]
US D438266S · Levrett · 2001 [cited by examiner]
US 6306109B1 · Polychronis · 2001 [cited by examiner]
US 7077787B1 · Wiesman · 2006 [cited by examiner]
US D591367S · Harris · 2009 [cited by examiner]
US 7824311B1 · Hsu · 2010 [cited by examiner]
US D633157S · Knapp · 2011 [cited by examiner]
US D654126S · Eckermann · 2012 [cited by examiner]
US D680178S · An · 2013 [cited by examiner]
US D742463S · An · 2015 [cited by examiner]
US 9415262B2 · An · 2016 [cited by examiner]
US 9700749B2 · Carpinelli · 2017 [cited by examiner]
US D805141S · Nicoud · 2017 [cited by examiner]
US D846969S · Trammell · 2019 [cited by examiner]
US D855127S · Lucas · 2019 [cited by examiner]
US 10449406B2 · Alnajjar · 2019 [cited by examiner]
US 10688340B1 · Aldredge · 2020 [cited by examiner]
US 10775125B1 · Owen, Jr. · 2020 [cited by examiner]
US 10898749B2 · Ju · 2021 [cited by examiner]
US 11298289B2 · Horowitz · 2022 [cited by examiner]
US 11400341B2 · Van Willigen · 2022 [cited by examiner]
US 11413522B1 · Hodrinsky · 2022 [cited by examiner]
US D966444S · Van Willigen · 2022 [cited by examiner]
US D967913S · Shang · 2022 [cited by examiner]
US 11612802B2 · Schaefer · 2023 [cited by examiner]
US D990592S · Ju · 2023 [cited by examiner]
US D1008380S · Fleischman · 2023 [cited by examiner]
US D1038286S · Lin · 2024 [cited by examiner]
US D1076013S · Ju · 2025 [cited by examiner]
US D1079854S · Gao · 2025 [cited by examiner]
US D1080421S · Gao · 2025 [cited by examiner]
US D1085920S · Gao · 2025 [cited by examiner]
US 12343593B2 · An · 2025 [cited by examiner]
US 12345495B2 · Suman · 2025 [cited by examiner]
US 12439901B1 · Duell · 2025 [cited by examiner]
US 12453892B1 · Frampton · 2025 [cited by examiner]
US 12502578B1 · Liu · 2025 [cited by examiner]
US 20040003687A1 · An · 2004 [cited by examiner]
US 20050131320A1 · Lee · 2005 [cited by examiner]
US 20080103026A1 · An · 2008 [cited by examiner]
US 20130072359A1 · Leach · 2013 [cited by examiner]
US 20140038786A1 · Garcia · 2014 [cited by examiner]
US 20150290491A1 · An · 2015 [cited by examiner]
US 20190255383A1 · An · 2019 [cited by examiner]
US 20190366145A1 · Reda · 2019 [cited by examiner]
US 20200121985A1 · Ju · 2020 [cited by examiner]
US 20200368577A1 · An · 2020 [cited by examiner]
US 20230233904A1 · Hsu · 2023 [cited by examiner]
US 20240123282A1 · Lu · 2024 [cited by examiner]
CN 308532748S · 2024 [cited by applicant]
IN 436916 · 2024 [cited by examiner]
“FitBeast Grip Strength Trainer” Nov. 4, 2024, Amazon, site visited Mar. 11, 2025: https://www.amazon.com/dp/B0DLWHNX9Q/ref=sspa_dk_detail_3?psc=1&pf_rd_p=386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_r=RGQP9D15Z8B119ZRADN… [cited by examiner]
“Grip Workout Kit” Aug. 11, 2024, Amazon, site visited Mar. 11, 2025: https://www.amazon.co.uk/Workout-Reliable-Flexible-Strengthener-Adjustable/dp/B0DCTY2TPS (Year: 2024). [cited by examiner]
“HXD-Ergo Hand Grip Strengthener” Apr. 17, 2024, Amazon, site visited Mar. 11, 2025: https://www.amazon.co.uk/HXD-ERGO-Strengthener-Adjustable-Resistance-Exerciser/dp/B0D21N4SLZ/ref=pd_rhf_dp_s_ci_mcx_mr_hp_d_d_sccl_1_1… [cited by examiner]
“Hand Grip Strengthener with counter” Mar. 29, 2024, Amazon, site visited Jul. 7, 2025: https://www.amazon.com/MILIFOX-Strengthener-Counter-Adjustable-Resistance/dp/B0CZDMZ7VL/ (Year: 2024). [cited by examiner]
“Hand Muscle Developer” May 13, 2023, Amazon, site visited Jul. 7, 2025: https://www.amazon.com/Washranp-Developer-Electronic-Universal-Equipment/dp/B0C55FX3HC (Year: 2023). [cited by examiner]
“Generic Hand grips” May 18, 2021, Amazon, site visited Jul. 7, 2025: https://www.amazon.eg/-/en/Generic-grips-double-color-red-black/dp/B0957LVP14/ (Year: 2021). [cited by examiner]
“Premium SportQ 2 Pack Foam Grip Hand Forearm Wrist Finger Strength Training for Fitness Gym” Jul. 2, 2023, Amazon, site visited Dec. 3, 2025: https://www.amazon.eg/-/en/SportQ-Premium-Handles-Strength-Training/dp/B0C9Y… [cited by examiner]
“Grip Strength Trainer with Forearm Strengthener” Sep. 12, 2023, Amazon, site visited Dec. 3, 2025: https://www.amazon.com/Strength-Strengthener-Extension-Exerciser-Building/dp/B0CH388R6Y/ref=sims_dp_d_dex_popular_subs_… [cited by examiner]
“Grip Strength Trainer Hand Gripper Exerciser” Jan. 14, 2019, Amazon, site visited Dec. 3, 2025: https://www.amazon.com/Strength-Strengthener-Extension-Exerciser-Building/dp/BOCH388R6Y/ref=sims_dp_d_dex_popular_subs_t3_… [cited by examiner]
“The 6 Best Grip Strengtheners (2026): Tools to Build Hands That Crush” Sep. 8, 2025, Garage Gym Reviews, site visited Feb. 10, 2026: https://www.garagegymreviews.com/best-grip-strengthener (Year: 2025). [cited by examiner]
Grip Strength Trainer with Finger Exerciser, 3 Finger Stretcher, Adjustable Resistance Hand Gripper Strengthener with Electronic Counting for Muscle Building and Injury Recover, posted Sep. 25, 2024, [retrieved Jan. 22,… [cited by applicant]
Niyikow Grip Strength Trainer Hand Grip Strength Adjustable Resistance 10-60 kg Forearm Strengthener Ideal for musicians, athletes, and hand injury recovery, posted Dec. 2019, [retrieved Jan. 22, 2025]. Retrieved from i… [cited by applicant]
Grip Strength Trainer with Finger Exerciser, Adjustable Resistance Hand Gripper, Hand Exerciser with Counting for Muscle Building(10-130 Lbs), posted Mar. 2024, [retrieved Jan. 22, 2025]. Retrieved from internet, https:… [cited by applicant]
FitBeast Grip Strengthener Forearm Strengthener Hand Grips Strengthener—Adjustable Resistance 10-130Lbs, posted Nov. 2023, [retrieved Jan. 22, 2025]. Retrieved from internet, https://www.amazon.com/-/zh/dp/B0CP3J89V7/re… [cited by applicant]
KDG Hand Grip Strengthener 2 Pack Adjustable Resistance 10-130 lbs Forearm Exerciser , Grip Strength Trainer for Muscle Building and Injury Recovery for Athletes, [retrieved Jan. 22, 2025]. Retrieved from internet, http… [cited by applicant]
Grip Strength Trainer, Adjustable Resistance 11-220 lbs Forearm Exerciser, the Five Fingers Grip Strength Trainer with Digital Counter, Hand Grips Strengthener, [retrieved Jan. 22, 2025]. Retrieved from internet, https:… [cited by applicant]
Hand Grip Strengthener with Counter—Grip Strength Trainer, Finger Exerciser, Finger Stretcher, Grip Ring, Stress Relief Ball & Therapy Put, [retrieved Jan. 22, 2025]. Retrieved from internet, https://www.amazon.com/Run-… [cited by applicant]