B29D 30/20
By the flat-tyre method, i.e. building on cylindrical drums
Official title: by the flat-tyre method, i.e. building on cylindrical drums
B29D30/20 (By the flat-tyre method, i.e. building on cylindrical drums) appears on 1,340 US grants and 1,180 published applications in this corpus.
Search patents in B29D- Granted patents
- 1,340
- Published applications
- 1,180
- Assignees
- 194
- Inventors
- 1,715
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 28 | 0 |
| 1977 | 30 | 0 |
| 1978 | 26 | 0 |
| 1979 | 19 | 0 |
| 1980 | 28 | 0 |
| 1981 | 27 | 0 |
| 1982 | 18 | 0 |
| 1983 | 14 | 0 |
| 1984 | 29 | 0 |
| 1985 | 14 | 0 |
| 1986 | 14 | 0 |
| 1987 | 14 | 0 |
| 1988 | 20 | 0 |
| 1989 | 30 | 0 |
| 1990 | 21 | 0 |
| 1991 | 23 | 0 |
| 1992 | 23 | 0 |
| 1993 | 37 | 0 |
| 1994 | 22 | 0 |
| 1995 | 26 | 0 |
| 1996 | 16 | 0 |
| 1997 | 15 | 0 |
| 1998 | 18 | 0 |
| 1999 | 17 | 0 |
| 2000 | 20 | 0 |
| 2001 | 10 | 16 |
| 2002 | 27 | 31 |
| 2003 | 23 | 30 |
| 2004 | 32 | 30 |
| 2005 | 23 | 39 |
| 2006 | 24 | 51 |
| 2007 | 14 | 54 |
| 2008 | 20 | 44 |
| 2009 | 15 | 69 |
| 2010 | 27 | 57 |
| 2011 | 27 | 49 |
| 2012 | 28 | 49 |
| 2013 | 25 | 66 |
| 2014 | 31 | 49 |
| 2015 | 36 | 68 |
| 2016 | 42 | 65 |
| 2017 | 35 | 75 |
| 2018 | 45 | 47 |
| 2019 | 60 | 49 |
| 2020 | 49 | 53 |
| 2021 | 54 | 45 |
| 2022 | 32 | 41 |
| 2023 | 31 | 29 |
| 2024 | 36 | 38 |
| 2025 | 25 | 20 |
| 2026 | 20 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B29D 30/24Drums603
- B29D 30/30Applying the layers541
- B29D 30/32Fitting the bead-rings or bead-cores293
- B29D 30/28Rolling-down or pressing-down the layers in the building process93
- B29D 2030/202The building drums being movable, i.e. not permanently connected to a fixedIndexing code55
- B29D 2030/201Manufacturing run-flat tyresIndexing code39
- B29D 2030/206A plurality of building drums being mounted on a fixture or supportingIndexing code36
- B29D 2030/204The fixtures supporting the cylindrical drumsIndexing code29
All 14 subgroupsShow fewer
- B29D 30/22Breaker plies being applied in the unexpanded state22
- B29D 2030/208The drum supporting device being rotatable around a vertical axisIndexing code20
- B29D 2030/207The drum supporting device being rotatable around a horizontal axisIndexing code17
- B29D 2030/205A single building drum being mounted on a fixture or supporting deviceIndexing code16
- B29D 2030/209The drum supporting device being rotatable around an inclined axisIndexing code4
- B29D 2030/203The fixtures supporting the cylindrical drums being non displaceable, i.e. substantially fixedIndexing code3
Recent patents
- Applicator unit, tire building device and method for applying a strip to a drum22 Sep 2026US 12,741,393 B2Vmi Holland B .V.
- Follow-up control method and system for forming machine22 Sep 2026US 12,741,434 B2Mesnac Co., Ltd.
- Tire building drum and method for turning-up a tire component15 Sep 2026US 12,734,776 B2Vmi Holland B .V.
- Working station for deposition of elementary semifinished products for building green tyres1 Sep 2026US 12,722,350 B2Pirelli Tyre S. P. A.
- Passenger radial tire forming machine and case thereof18 Aug 2026US 12,709,079 B2Mesnac Co., Ltd.
- Solid tire and method for manufacturing same24 Sep 2026US 2026/0285088 A1Aichi Tire Industry Co., Ltd.
- Applicator unit, tire building device and method for applying a continuous strip to a drum24 Sep 2026US 2026/0285633 A1Vmi Holland B .V.
- Turn-up method and turn-up mechanism10 Sep 2026US 2026/0264353 A1Mesnac Co., Ltd.
- Method for producing a pneumatic tyre13 Aug 2026US 2026/0233480 A1Continental Reifen Deutschland GmbH
- Apparatus for arranging elongated elements to be used in a process for building tyres for vehicle wheels6 Aug 2026US 2026/0225335 A1Pirelli Tyre S. P. A.
Most cited
By later US patents
- Hot tire forming method54US 4,877,468 AThe Firestone Tire & Rubber Company · 1989
- Method for manufacturing an assembly of a belt, a band, and a tread rubber50US 5,032,198 ASumitomo Rubber Industries, Ltd. · 1991
- Tire building drum37US 4,131,500 AAvon Tyres Limited · 1978
- Run-flat tire incorporating tape-wrapped helical coil band and method of forming37US 4,673,014 AGrumman Aerospace Corporation · 1987
- Radial mandrel36US 4,436,574 AEagle-Picher Industries, Inc. · 1984