B29D 30/246
Drums for the multiple stage building process, i.e. the building-up of the
Official title: {Drums for the multiple stage building process, i.e. the building-up of the cylindrical carcass is realised on one drum and the toroidal expansion is realised after transferring on another drum (expansion to a toroidal shape B29D30/36)}
B29D30/246 (Drums for the multiple stage building process, i.e. the building-up of the) appears on 92 US grants and 89 published applications in this corpus.
Search patents in B29D- Granted patents
- 92
- Published applications
- 89
- Assignees
- 39
- Inventors
- 169
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 2 |
| 2002 | 2 | 1 |
| 2003 | 3 | 4 |
| 2004 | 3 | 4 |
| 2005 | 1 | 2 |
| 2006 | 4 | 4 |
| 2007 | 0 | 3 |
| 2008 | 2 | 3 |
| 2009 | 0 | 5 |
| 2010 | 2 | 4 |
| 2011 | 4 | 3 |
| 2012 | 2 | 3 |
| 2013 | 0 | 5 |
| 2014 | 2 | 6 |
| 2015 | 6 | 3 |
| 2016 | 2 | 5 |
| 2017 | 2 | 5 |
| 2018 | 3 | 3 |
| 2019 | 4 | 6 |
| 2020 | 6 | 5 |
| 2021 | 5 | 3 |
| 2022 | 2 | 5 |
| 2023 | 3 | 2 |
| 2024 | 4 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Plant for building tyres for vehicle wheels27 May 2025US 12,311,623 B2Pirelli Tyre S. P. A.
- Expandable drum for shaping pneumatic tires that comprises a parallelogram-type expander device for retaining the bead wire19 Nov 2024US 12,145,339 B2Compagnie Generale Des Etablissements Michelin
- Method for building tyres for vehicle wheels30 Jul 2024US 12,049,053 B2Pirelli Tyre S. P. A.
- Tire manufacturing device and tire manufacturing method30 Jul 2024US 12,049,054 B2Toyo Tire Corporation
- Drum and method for manufacturing a tire blank30 Jan 2024US 11,884,035 B2Compagnie Generale Des Etablissements Michelin
- Bead-lock section, drum half and tire building machine12 Jun 2025US 2025/0187283 A1Vmi Holland B .V.
- Method and device for adjusting axial size of middle drum assembly, and forming drum28 Nov 2024US 2024/0391197 A1Mesnac Co., Ltd.
- Plant for building tyres for vehicle wheels17 Oct 2024US 2024/0343008 A1Pirelli Tyre S. P. A.
- Drum half, tire building machine and method for operating said tire building machine21 Dec 2023US 2023/0405954 A1Vmi Holland B .V.
- Tyre for vehicle wheels7 Sep 2023US 2023/0278303 A1Pirelli Tyre S. P. A.
Most cited
By later US patents
- Tire building drum37US 4,131,500 AAvon Tyres Limited · 1978
- Tire building drum30US 4,239,579 AThe Goodyear Tire & Rubber Company · 1980
- Tire assembly drum26US 6,234,227 B1Compagnie Generale des Etablissements Michelin - Michelin & Cie · 2001
- Bead lock drum for use in the manufacture of vehicle tires25US 5,354,405 AWyko Corporation · 1994
- Building machine having an infinite number of drum settings21US 4,151,035 AThe General Tire & Rubber Company · 1979