Tire building drum
US4636277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Feb 5, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/24
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A radial collapse tire building drum having a hub, a plurality of axially extending cylindrical body segments disposed around the hub, a first radial support at one axial end of the hub and supporting one axial end of the segments, a second radial support at the other axial end of the hub and supporting the other axial ends of the segments, and a collapsing mechanism disposed within the drum between the first and second radial supports and operable to move the segments either radially outwardly with respect to the hub to form a cylindrical body concentric with the hub, or radially inwardly towards the hub to collapse the cylindrical body of the drum. A main drive shaft is secured to the hub with its axis co-extensive with the hub axis and there is a hollow shaft through which the main drive shaft extends. A drive transmission extends between the circumferentially adjacent, radially extending supports of the first radial support means to provide a drive connection between the hollow shaft and the collapsing mechanism for transmitting rotational movement of the hollow shaft relative to the main shaft to operate the collapsing mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.