Tire building drum
US3948717A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1975 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Apr 14, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/24
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tire building drum is adapted to be expansible and collapsible at three different diameter states and includes a main tire building drum, a pair of auxiliary tire building drums partially engageable with the radially inner surfaces of the opposite end portions of the main tire building drum to axially be slidable toward and away from the equatorial plane of the main tire building drum, a rotary shaft carrying thereon the main and auxiliary tire building drums for rotation thereof, and a pair of slide means for axially sliding the auxiliary tire building drums toward and away from the equatorial plane of the main tire building drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.