A63B 21/155
Cam-shaped pulleys or other non-uniform pulleys
Official title: {Cam-shaped pulleys or other non-uniform pulleys, e.g. conical}
A63B21/155 (Cam-shaped pulleys or other non-uniform pulleys) appears on 232 US grants and 152 published applications in this corpus.
Search patents in A63B- Granted patents
- 232
- Published applications
- 152
- Assignees
- 76
- Inventors
- 251
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 11 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 6 | 6 |
| 2003 | 3 | 9 |
| 2004 | 4 | 6 |
| 2005 | 2 | 8 |
| 2006 | 9 | 8 |
| 2007 | 6 | 9 |
| 2008 | 9 | 10 |
| 2009 | 8 | 4 |
| 2010 | 15 | 7 |
| 2011 | 8 | 10 |
| 2012 | 2 | 6 |
| 2013 | 6 | 6 |
| 2014 | 1 | 8 |
| 2015 | 9 | 5 |
| 2016 | 5 | 4 |
| 2017 | 5 | 5 |
| 2018 | 5 | 8 |
| 2019 | 7 | 7 |
| 2020 | 7 | 2 |
| 2021 | 3 | 6 |
| 2022 | 7 | 3 |
| 2023 | 6 | 4 |
| 2024 | 2 | 2 |
| 2025 | 2 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exercise apparatus with rotatable CAM3 Mar 2026US 12,564,755 B2Keiser Corporation
- Cable system for exercise machines6 Jan 2026US 12,515,091 B1Bulletproof Fitness Equipment Inc
- Systems and methods for designing kinetic shapes2 Dec 2025US 12,488,154 B2University of South Florida
- Portable and variable exercise device14 Oct 2025US 12,440,718 B2Blix Strength LLC
- Adjustable resistance exercise machine19 Nov 2024US 12,145,016 B2Lagree Technologies, Inc.
- Exercise apparatus with rotatable cam11 Jun 2026US 2026/0158322 A1Keiser Corporation
- Systems and methods for designing kinetic shapes26 Mar 2026US 2026/0087185 A1University of South Florida
- Load transmission mechanism for training apparatus, and training apparatus incorporating the same12 Feb 2026US 2026/0041957 A1World Wing Enterprise Co., Ltd.
- Weightlifting Machine6 Nov 2025US 2025/0339726 A1Coulter Ventures, LLC.
- Weightlifting Machine18 Sep 2025US 2025/0288849 A1Coulter Ventures, LLC.
Most cited
By later US patents
- Variable resistance exercise device236US 6,027,429 ANordicTrack, Inc. · 2000
- Variable resistance exercise device180US 5,409,435 A1995
- Exercise method and apparatus166US 5,810,698 ANordic Track, Inc. · 1998
- Variable exercise apparatus165US 4,603,855 A1986
- Variable resistance exercise device137US 5,762,584 ANordicTrack, Inc. · 1998