A63B 21/00061
Replaceable resistance units of different strengths
Official title: {Replaceable resistance units of different strengths, e.g. for swapping}
A63B21/00061 (Replaceable resistance units of different strengths) appears on 728 US grants and 700 published applications in this corpus.
Search patents in A63B- Granted patents
- 728
- Published applications
- 700
- Assignees
- 245
- Inventors
- 1,058
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 8 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 14 | 0 |
| 1996 | 11 | 0 |
| 1997 | 15 | 0 |
| 1998 | 26 | 0 |
| 1999 | 17 | 0 |
| 2000 | 16 | 0 |
| 2001 | 7 | 1 |
| 2002 | 9 | 14 |
| 2003 | 12 | 21 |
| 2004 | 13 | 21 |
| 2005 | 8 | 26 |
| 2006 | 11 | 24 |
| 2007 | 11 | 37 |
| 2008 | 21 | 22 |
| 2009 | 14 | 15 |
| 2010 | 14 | 23 |
| 2011 | 21 | 12 |
| 2012 | 5 | 14 |
| 2013 | 19 | 25 |
| 2014 | 10 | 29 |
| 2015 | 19 | 36 |
| 2016 | 35 | 56 |
| 2017 | 56 | 69 |
| 2018 | 35 | 36 |
| 2019 | 43 | 50 |
| 2020 | 36 | 31 |
| 2021 | 33 | 25 |
| 2022 | 25 | 32 |
| 2023 | 20 | 19 |
| 2024 | 15 | 31 |
| 2025 | 20 | 23 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Enhanced core movement training bench262US 5,066,005 A1991
- Cyclocentric ergometer178US 6,652,425 B1Biodex Medical Systems, Inc. · 2003
- Exercise device159US 7,931,570 B2Balanced Body, Inc. · 2011
- Rower slant board152US 4,974,832 AProform Fitness Products, Inc. · 1990
- Exercise furniture136US 4,913,423 A1990