Turn-up device for making a molded body of an air spring for a vehicle wheel suspension or a lift axle
US6918980B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 11, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/3264
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A turn-up device (40) for making a molded body of an airspring on a mechanical drum having expandable end portions. The device (40) comprises a support member (42), a plurality of turning arms (44) pivotally mounted to the support member (42), and a sleeve (46) resiliently mounted to the support member (42). The turning arms (44) are movable between radially inner and outer positions and are biased to the radially inner position. The sleeve (46) is movable relative to the arms (44) between a position whereat it holds the arms (44) in the radially outer position and a position whereat it releases the arms (44) so that they can be biased to the radially inner position. The airspring can be used in a large vehicle wheel suspension (i.e., a bus or a truck) and/or can be used to manipulate the lift axle of, for example, a large dump truck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.