B65G 21/00
Supporting or protective framework or housings for endless load-carriers or traction elements
Official title: Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
B65G21/00 (Supporting or protective framework or housings for endless load-carriers or traction elements) appears on 2,645 US grants and 2,004 published applications in this corpus.
Search patents in B65G- Granted patents
- 2,645
- Published applications
- 2,004
- Assignees
- 1,364
- Inventors
- 4,335
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 10 | 0 |
| 1978 | 13 | 0 |
| 1979 | 19 | 0 |
| 1980 | 21 | 0 |
| 1981 | 14 | 0 |
| 1982 | 18 | 0 |
| 1983 | 19 | 0 |
| 1984 | 22 | 0 |
| 1985 | 30 | 0 |
| 1986 | 19 | 0 |
| 1987 | 29 | 0 |
| 1988 | 40 | 0 |
| 1989 | 44 | 0 |
| 1990 | 41 | 0 |
| 1991 | 41 | 0 |
| 1992 | 46 | 0 |
| 1993 | 35 | 0 |
| 1994 | 42 | 0 |
| 1995 | 39 | 0 |
| 1996 | 29 | 0 |
| 1997 | 38 | 0 |
| 1998 | 41 | 0 |
| 1999 | 42 | 0 |
| 2000 | 48 | 0 |
| 2001 | 55 | 14 |
| 2002 | 48 | 46 |
| 2003 | 63 | 45 |
| 2004 | 36 | 59 |
| 2005 | 39 | 50 |
| 2006 | 39 | 49 |
| 2007 | 42 | 49 |
| 2008 | 39 | 50 |
| 2009 | 33 | 68 |
| 2010 | 58 | 59 |
| 2011 | 47 | 51 |
| 2012 | 38 | 57 |
| 2013 | 47 | 81 |
| 2014 | 89 | 73 |
| 2015 | 85 | 78 |
| 2016 | 81 | 91 |
| 2017 | 109 | 107 |
| 2018 | 106 | 118 |
| 2019 | 114 | 95 |
| 2020 | 108 | 142 |
| 2021 | 146 | 121 |
| 2022 | 110 | 120 |
| 2023 | 92 | 113 |
| 2024 | 106 | 92 |
| 2025 | 95 | 98 |
| 2026 | 59 | 78 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B65G 21/20Means incorporated in, or attached to, framework or housings for guiding load-carriers1,225
- B65G 21/10Movable, or having interchangeable or relatively movable parts811
- B65G 21/02Consisting essentially of struts, ties, or like structural elements420
- B65G 21/16Supporting or protective framework or housings for endless load-carriers or traction elements327
- B65G 21/08Protective roofs or arch supports therefor92
- B65G 21/005Supporting or protective framework or housings for endless load-carriers or traction elements6
Recent patents
- Belt conveyor device for lumpy products and device and method for removing products from a product flow6 Oct 2026US 12,753,012 B2Loesch Verpackungstechnik GmbH
- Horizontal conveyor, preferably for transporting pallets loaded with goods6 Oct 2026US 12,753,013 B2Nedcon B.V.
- Systems for conveying articles29 Sep 2026US 12,747,108 B2Syntegon Telstar Technologies S.L.U.
- Automatic lane adjustment system29 Sep 2026US 12,747,109 B2Illinois Tool Works Inc.
- Can orientation verification systems and methods29 Sep 2026US 12,747,111 B2Canpack S.A.
- Ejection System for Laminated Material Stacker1 Oct 2026US 2026/0296793 A1European Machinery Engineering Projects, S.L.
- Variable-capacity store24 Sep 2026US 2026/0283223 A1G. D S.p.A.
- Low Friction Magnetic Liner24 Sep 2026US 2026/0285006 A1Buffalo Wire Works Company, Inc.
- Telescopic conveyor17 Sep 2026US 2026/0274579 A1
- Skirtboard liner assemblies3 Sep 2026US 2026/0257863 A1Martin Engineering Company
Most cited
By later US patents
- Tortilla counter-stacker125US 6,053,695 AITE, Inc. · 2000
- Mechanical handling apparatus98US 4,909,378 AHydraroll Limited · 1990
- Guide rail system for roller-type conveyors98US 6,830,146 B1Cargotainer Adrian Fabricators, Inc. · 2004
- Fold linkage and method of using same88US 6,296,109 B1Astec Industries, Inc. · 2001
- Two-axis robot for specimen transfer86US 6,843,357 B2Cardinal Health 301, Inc. · 2005