Variable rate air spring assembly
US6691989B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Aug 16, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/049
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An air spring assembly has a pair of spaced end plates and a flexible sleeve extending therebetween forming an internal fluid chamber. One of the end plates is a bead plate which is crimped to an open end of the sleeve. An insert having an internally threaded hole is mounted in a central hole formed in the bead plate. An externally threaded coupler having a hollow bore is mounted in a central opening formed in an end member of an auxiliary reservoir and is threadably engaged with the internally threaded hole to mount the auxiliary reservoir in an abutting relationship on the air spring bead plate to provide a variable rate air spring. A fluid path is provided through the threaded connection for the flow of fluid between the air spring and auxiliary reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.