Bead lock means for tire-forming drum
US4486259A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jun 4, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/3214
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A bead lock device comprises mutually separable and engageable shafts, and a pair of left and right bead lock members consisting of a plurality of segments, each segment having one end pivoted to the shafts and the other end adapted to expand in diameter in the radial direction and to hold the bead portion of a green tire case in substantially circular form. A slide member capable of moving in the radial direction of the shafts is provided and is connected to the segments through a link member for expanding and contracting the diameter of the segments in the radial direction through a link mechanism. A mechanism for moving the slide member in the direction of an expansion in diameter is provided for the segments and also provided is a mechanism for moving the segments in the direction of contraction in diameter of said segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.