Air spring having a roll-off piston and a rolling-lobe flexible member having at least one attachment part vulcanized thereon
US7681868B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2006 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Jun 16, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/05
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An air spring has a roll-off piston (1) and a rolling-lobe flexible member (2) of rubber or rubber-like material. At least the opening of the rolling-lobe flexible member, which lies opposite the opening assigned to the roll-off piston (1), is closed air tight with an attachment part (3) and the attachment part has a planar connecting region (4) having at least one air connection (7) and an outer rim (11) and a conical region (10) facing toward the rolling-lobe flexible member (2). The rolling-lobe flexible member (2) is tightly vulcanized to the attachment part (3) in a vulcanization region (12) which extends from the side (9) of the outer rim (11) into the conical region (10). The side (9) of the outer rim (11) faces toward the rolling-lobe flexible member (2). The at least one attachment part (3), which is vulcanized to the rolling-lobe flexible member (2), is configured as a head plate (3) complete with all connections (7) and is made of thermoplastic or duroplastic synthetic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.