A63B 21/055
Extension element type
Official title: extension element type
A63B21/055 (Extension element type) appears on 3,368 US grants and 3,352 published applications in this corpus.
Search patents in A63B- Granted patents
- 3,368
- Published applications
- 3,352
- Assignees
- 975
- Inventors
- 4,457
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 12 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 12 | 0 |
| 1981 | 10 | 0 |
| 1982 | 16 | 0 |
| 1983 | 9 | 0 |
| 1984 | 13 | 0 |
| 1985 | 12 | 0 |
| 1986 | 16 | 0 |
| 1987 | 20 | 0 |
| 1988 | 16 | 0 |
| 1989 | 22 | 0 |
| 1990 | 26 | 0 |
| 1991 | 37 | 0 |
| 1992 | 29 | 0 |
| 1993 | 43 | 0 |
| 1994 | 57 | 0 |
| 1995 | 39 | 0 |
| 1996 | 72 | 0 |
| 1997 | 74 | 0 |
| 1998 | 87 | 0 |
| 1999 | 62 | 0 |
| 2000 | 54 | 0 |
| 2001 | 41 | 11 |
| 2002 | 41 | 45 |
| 2003 | 55 | 57 |
| 2004 | 43 | 71 |
| 2005 | 34 | 105 |
| 2006 | 50 | 90 |
| 2007 | 48 | 99 |
| 2008 | 59 | 88 |
| 2009 | 60 | 86 |
| 2010 | 108 | 128 |
| 2011 | 105 | 111 |
| 2012 | 54 | 120 |
| 2013 | 77 | 136 |
| 2014 | 104 | 170 |
| 2015 | 137 | 187 |
| 2016 | 171 | 190 |
| 2017 | 177 | 232 |
| 2018 | 150 | 202 |
| 2019 | 184 | 186 |
| 2020 | 162 | 180 |
| 2021 | 149 | 164 |
| 2022 | 154 | 190 |
| 2023 | 150 | 152 |
| 2024 | 122 | 138 |
| 2025 | 120 | 139 |
| 2026 | 57 | 75 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Expander with degressive stress behaviour6 Oct 2026US 12,752,146 B2Fuerallex LLC
- Upper body ski motion exercise machine22 Sep 2026US 12,741,186 B2
- Striker vest15 Sep 2026US 12,734,395 B1
- Cervical strengthening and rehabilitation system25 Aug 2026US 12,714,903 B2Menard Chiropractic Health Center, Inc.
- Therapeutic exercise device for hand and arm25 Aug 2026US 12,714,904 B1
- Bed Exercise Systems and Methods8 Oct 2026US 2026/0306899 A1Sage Products, LLC
- Foldable leg lift machine saving storage space and reducing cost8 Oct 2026US 2026/0306902 A1
- Fitness device1 Oct 2026US 2026/0295332 A1Yongkang Dingjian Industry and Trade Co., Ltd.
- Training device24 Sep 2026US 2026/0284461 A1Shanghai Sensol Interactive Co., Ltd.
- Infrared-enhanced modular resistance training systems24 Sep 2026US 2026/0284470 A1Core 46 IP, LLC
Most cited
By later US patents
- Enhanced core movement training bench262US 5,066,005 A1991
- Articulated lower body exerciser231US 5,299,993 APacific Fitness Corporation · 1994
- Stress test exercise device212US 4,720,093 ADel Mar Avionics · 1988
- Exercise suit with resilient reinforcing199US 5,201,074 A1993
- Articulated lower body exerciser193US 5,499,956 ANordicTrack, Inc. · 1996