B60B 33/00
Castors in general
Official title: Castors in general {; Anti-clogging castors} (castors for large containers B65D90/18)
B60B33/00 (Castors in general) appears on 1,941 US grants and 1,583 published applications in this corpus.
Search patents in B60B- Granted patents
- 1,941
- Published applications
- 1,583
- Assignees
- 995
- Inventors
- 3,138
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 27 | 0 |
| 1978 | 33 | 0 |
| 1979 | 11 | 0 |
| 1980 | 29 | 0 |
| 1981 | 15 | 0 |
| 1982 | 30 | 0 |
| 1983 | 16 | 0 |
| 1984 | 20 | 0 |
| 1985 | 24 | 0 |
| 1986 | 21 | 0 |
| 1987 | 38 | 0 |
| 1988 | 39 | 0 |
| 1989 | 28 | 0 |
| 1990 | 18 | 0 |
| 1991 | 24 | 0 |
| 1992 | 32 | 0 |
| 1993 | 28 | 0 |
| 1994 | 34 | 0 |
| 1995 | 24 | 0 |
| 1996 | 27 | 0 |
| 1997 | 27 | 0 |
| 1998 | 31 | 0 |
| 1999 | 35 | 0 |
| 2000 | 34 | 0 |
| 2001 | 28 | 12 |
| 2002 | 38 | 36 |
| 2003 | 39 | 52 |
| 2004 | 32 | 59 |
| 2005 | 39 | 39 |
| 2006 | 26 | 57 |
| 2007 | 24 | 50 |
| 2008 | 24 | 42 |
| 2009 | 32 | 43 |
| 2010 | 24 | 49 |
| 2011 | 36 | 51 |
| 2012 | 29 | 46 |
| 2013 | 50 | 58 |
| 2014 | 59 | 52 |
| 2015 | 64 | 78 |
| 2016 | 53 | 76 |
| 2017 | 73 | 83 |
| 2018 | 79 | 83 |
| 2019 | 76 | 102 |
| 2020 | 72 | 68 |
| 2021 | 72 | 92 |
| 2022 | 53 | 70 |
| 2023 | 70 | 88 |
| 2024 | 68 | 77 |
| 2025 | 67 | 69 |
| 2026 | 52 | 51 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B60B 33/0002Assembling to the object827
- B60B 33/0036Castors in general: characterised by type of wheels791
- B60B 33/006Castors in general: characterised by details of the swivel mechanism764
- B60B 33/0047Castors in general: characterised by details of the rolling axle701
- B60B 33/02Castors in general: with disengageable swivel action , i.e. comprising a swivel479
- B60B 33/0078Castors in general: characterised by details of the wheel braking mechanism473
- B60B 33/04Adjustable417
- B60B 33/0028Construction of wheels345
All 9 subgroupsShow fewer
Recent patents
- Patient support apparatus having central dual control system of casters6 Oct 2026US 12,751,877 B2Linet Spol. S R.O.
- 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
- Assembly type fixture and assembling part of assembly type fixture18 Aug 2026US 12,708,200 B2Okamura Corporation
- Cart mover with reconfigurable drive unit and support wheels18 Aug 2026US 12,709,345 B2
- Tent support tube caster device8 Oct 2026US 2026/0307431 A1Heshan Fengzhida Outdoor Products Co., Ltd
- Apparatus for spring centered caster wheel8 Oct 2026US 2026/0307432 A1DEKA Products Limited Partnership
- Robot cleaner and robot cleaner system1 Oct 2026US 2026/0294196 A1LG Electronics Inc.
- 3'-utr sequences for stabilization of rna1 Oct 2026US 2026/0297594 A1BioNTech SE
- A wheel assembly for a wheeled apparatus27 Aug 2026US 2026/0249658 A1Howard Wright Limited
Most cited
By later US patents
- Autonomous surface cleaning robot for wet and dry cleaning295US 7,761,954 B2iRobot Corporation · 2010
- Undercarriage for X-ray diagnostic equipment212US 5,503,416 AOEC Medical Systems, Inc. · 1996
- Omnidirectional drive system159US 4,519,466 AEiko Shiraishi · 1985
- Caster and braking system158US 6,321,878 B1Hill-Rom Services, Inc. · 2001
- Omnidirectional vehicle with offset wheel pairs128US 6,540,039 B1Massachusetts Institute of Technology · 2003