Expandable mandrel having adjustable width
US8272417B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2007 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Mar 20, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/246
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rotary radial expand collapse tire building drum comprises segments defining an outer circumference of said drum, said segments being divided into two sets, one set being located to each opposite side of a transverse central plane of the drum, said central plane being disposed normal to a rotational axis of the drum, said two sets being adapted to be driven by a rotatable hub assembly between a collapsed position in which a formed tire carcass may be removed from the drum and an expanded position in which a tire carcass may be formed on said drum wherein each set of segments are mounted for selective relative axial using positioning means, and adjustment means is located outside of the rotational axis of the drum, which is arranged to adjust an overall working width of said drum. The invention allows for an axial positioning mechanism of a REC building drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.