Building arbor for tires and like articles having inextensible bead rings
US4087305A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1976 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Jun 1, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/3228
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A simple low cost building arbor having a wide range of axial length or bead set length variation. The arbor has no moving parts which are not of rubber or rubber-like material and is operable by air pressure alone. An expandable ring expands, by air pressure, to hold a bead ring in axial position and independently a turn-up bladder is expanded to turn a ply sleeve end about the bead ring. Operating air is conducted, in all axially selected positions in the range, not by tubing but by air transfer chambers connecting the bladder and a sleeve associated with the expandable ring with passage in the center shaft. The present invention relates to a building arbor for tires and like articles. The principal object of the invention is the provision of a simple, low cost building arbor actuable solely by fluid pressure to position an inextensible bead ring about a ply in cylindrical form on the arbor and to turn the ply ending about the bead ring. Broadly, the objects of the invention are accomplished in a building arbor comprising a center shaft having passages for conducting fluid, a pair of end rings axially slidable on the center shaft and having axially elongated annular air transfer …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.