B60B 33/021
Combined with braking of castor wheel
Official title: {combined with braking of castor wheel}
B60B33/021 (Combined with braking of castor wheel) appears on 271 US grants and 173 published applications in this corpus.
Search patents in B60B- Granted patents
- 271
- Published applications
- 173
- Assignees
- 143
- Inventors
- 364
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 10 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 8 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 1 |
| 2002 | 6 | 4 |
| 2003 | 7 | 7 |
| 2004 | 5 | 9 |
| 2005 | 7 | 4 |
| 2006 | 4 | 8 |
| 2007 | 5 | 8 |
| 2008 | 4 | 6 |
| 2009 | 8 | 17 |
| 2010 | 7 | 13 |
| 2011 | 16 | 9 |
| 2012 | 6 | 9 |
| 2013 | 11 | 7 |
| 2014 | 9 | 8 |
| 2015 | 8 | 10 |
| 2016 | 8 | 6 |
| 2017 | 3 | 6 |
| 2018 | 5 | 3 |
| 2019 | 5 | 5 |
| 2020 | 3 | 2 |
| 2021 | 6 | 5 |
| 2022 | 2 | 5 |
| 2023 | 7 | 5 |
| 2024 | 5 | 9 |
| 2025 | 5 | 3 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Caster having status indicator light6 Oct 2026US 12,752,572 B2Hill-Rom Services, Inc.
- Robotic surgical systems and robotic arm carts thereof25 Aug 2026US 12,714,530 B2Covidien LP
- Lawn care vehicle with front drive caster wheels30 Jun 2026US 12,667,047 B2Husqvarna AB
- Single action brake and swivel lock for caster30 Jun 2026US 12,668,080 B2Colson Group Holdings, LLC
- Caster with horizontal braking21 Apr 2026US 12,605,965 B2Benyu Casters & Wheels Co., Ltd
- Locking casters for surgical systems2 Jul 2026US 2026/0183071 A1Auris Health, Inc.
- Trailer-moving platform device2 Apr 2026US 2026/0091630 A1
- Patient Transport Apparatus With Brake Assembly And Steer Lock Assembly26 Mar 2026US 2026/0083609 A1Stryker Corporation
- Caster having status indicator light26 Mar 2026US 2026/0084463 A1Hill-Rom Services, Inc.
- Patient support apparatus having power indicator transport light18 Dec 2025US 2025/0381909 A1Hill-Rom Services, Inc.
Most cited
By later US patents
- Undercarriage for X-ray diagnostic equipment212US 5,503,416 AOEC Medical Systems, Inc. · 1996
- Caster and braking system158US 6,321,878 B1Hill-Rom Services, Inc. · 2001
- Hospital bed castor control mechanism123US 5,377,372 AHill-Rom, Inc. · 1995
- Caster assembly with swivel lock105US 4,349,938 AStewart-Warner Corporation · 1982
- Stretcher with castor wheels94US 6,735,794 B1Stryker Corporation · 2004