B65H 2404/421
Bed arrangement, i.e. involving parallel and spaced drums
Official title: Bed arrangement, i.e. involving parallel and spaced drums, e.g. arranged horizontally for supporting a roll to be wound or unwound
B65H2404/421 (Bed arrangement, i.e. involving parallel and spaced drums) appears on 21 US grants and 9 published applications in this corpus.
Search patents in B65H- Granted patents
- 21
- Published applications
- 9
- Assignees
- 16
- Inventors
- 36
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 2 |
| 2025 | 4 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 3D printing system30 Dec 2025US 12,508,771 B2Shenzhen Tuozhu Technology Co., Ltd.
- Filament replacement mechanism for 3D printer and 3D printing system12 Aug 2025US 12,384,113 B2Shenzhen Tuozhu Technology Co., Ltd.
- Method and a machine for winding a web onto spools to form a succession of web reels10 Jun 2025US 12,325,605 B2Valmet Corporation
- Filament replacement mechanism for 3D printer and 3D printing system28 Jan 2025US 12,208,582 B2Shenzhen Tuozhu Technology Co., Ltd.
- Unwinder for rolls of paper web material5 Apr 2022US 11,292,684 B2Tecno Paper Srl
- 3d printing system19 Mar 2026US 2026/0077558 A1Shenzhen Tuozhu Technology Co., Ltd.
- Winding device and winding method4 Sep 2025US 2025/0279462 A1Contemporary Amperex Technology Co., Limited
- Filament replacement mechanism for 3d printer and 3d printing system26 Jun 2025US 2025/0205971 A1Shenzhen Tuozhu Technology Co., Ltd.
- Media conveyance device24 Oct 2024US 2024/0351811 A1Pfu Limited
- Filament replacement mechanism for 3d printer and 3d printing system1 Aug 2024US 2024/0253308 A1Shenzhen Tuozhu Technology Co., Ltd.
Most cited
By later US patents
- Method and device in the winding of a web34US 4,842,209 AValmet Paper Machinery Inc. · 1989
- Winder for rewinding a web, especially a paper web24US 5,335,871 AJ. M. Voith GmbH · 1994
- Method and winding device for winding webs23US 5,639,045 ABeloit Technologies, Inc. · 1997
- Compliant drum and rider roll17US 4,541,585 ABeloit Corporation · 1985
- Method and device for winding a material web16US 5,806,783 AValmet Corporation · 1998