A63B 21/025
Spiral springs with turns lying substantially in plane surfaces
Official title: {Spiral springs with turns lying substantially in plane surfaces}
A63B21/025 (Spiral springs with turns lying substantially in plane surfaces) appears on 178 US grants and 191 published applications in this corpus.
Search patents in A63B- Granted patents
- 178
- Published applications
- 191
- Assignees
- 72
- Inventors
- 314
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 3 |
| 2003 | 3 | 6 |
| 2004 | 5 | 4 |
| 2005 | 2 | 2 |
| 2006 | 3 | 3 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 2 | 5 |
| 2010 | 5 | 7 |
| 2011 | 10 | 11 |
| 2012 | 5 | 7 |
| 2013 | 3 | 16 |
| 2014 | 8 | 11 |
| 2015 | 5 | 16 |
| 2016 | 14 | 8 |
| 2017 | 9 | 3 |
| 2018 | 5 | 14 |
| 2019 | 12 | 12 |
| 2020 | 14 | 14 |
| 2021 | 8 | 8 |
| 2022 | 9 | 6 |
| 2023 | 8 | 10 |
| 2024 | 8 | 7 |
| 2025 | 11 | 9 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Embo flo medical device22 Sep 2026US 12,741,172 B2
- Fitness cable tensioning apparatus, systems, and methods of use25 Aug 2026US 12,714,902 B2Bare Mechanics LLC
- Bilateral retractable band/cord device with handles3 Feb 2026US 12,539,441 B2
- Hand gripper23 Dec 2025US 12,502,578 B1
- Adjustable-force resistance cable retractor18 Nov 2025US 12,472,397 B2
- Physical training and rehabilitation device8 Oct 2026US 2026/0306896 A1
- Fitness cable tensioning apparatus, systems, and methods of use20 Aug 2026US 2026/0241223 A1Bare Mechanics LLC
- Chair exercise apparatus9 Jul 2026US 2026/0192151 A1Balanced Body, Inc.
- Chair exercise apparatus9 Jul 2026US 2026/0192152 A1Balanced Body, Inc.
- Resistance training device and uses thereof30 Apr 2026US 2026/0115526 A1MirthCore LLC
Most cited
By later US patents
- Computerized exercise system and method199US 6,280,361 B1Intelligent Automation, Inc. · 2001
- Pilates exercise machine104US 10,046,193 B1Rockitformer, LLC · 2018
- Total body exercise machine78US 8,075,453 B12011
- Swim stroke exercise device68US 6,790,163 B12004
- Exercise device with variable resistance65US 5,733,231 A1998