Mixing drum drive ring
US7744267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2003 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jan 14, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A composite, heavy duty rotary concrete mixing drum (16) for coupling to a vehicle having a drivetrain (18) for rotating the drum (16) comprises a wall and a drive ring. The wall defines a first end of the drum and a second end of the drum. The drive ring (39) is coupled to the first end of the drum and includes a hub (108, 252) and a plurality of extensions (110, 254). The hub is operatively coupled to the drivetrain. The plurality of extensions (110, 254) extend outwardly from the hub (108, 252) into the wall of the drum. At least one of the extensions includes an aperture (121, 126) extending therethrough. Rotation of the hub by the second drivetrain causes rotation of the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.