Leaf spring assembly having safety spring with retaining elements
US7520517B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2202/112
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A leaf spring assembly features a stack of leaf springs having mounting couplings attached at opposite ends. The mounting couplings each have first and second mounting elements clamped together about at least a main spring and a safety spring. The safety spring has retaining elements at opposite ends each having an extension portion and a blocking portion. The extension portion extends past the end of the main spring. Here the blocking portion extends generally perpendicularly from the extension portion to block motion of the mounting coupling should failure cause it to be detached from the stack of springs. This ensures that failure does not cause complete separation of the spring stack and mounting couplings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.