Pivot joint assembly
US5082387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1991 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Mar 12, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32967
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pivot joint for a rotary lever has a spacer extending axially from a foundation such as an engine motor component. The spacer includes a cylindrical ferrule. A rotary lever and a belleville spring, both having a bore of a size to fit over the outside of the ferrule in a sliding fit, are slid over the ferrule. The belleville spring has an uncompressed cone height to thickness ratio of 1.4 to 1.8 and is compressed by at least 50% of the uncompressed cone height. The joint also includes a means for fastening the spacer to the foundation and a means for securing the lever and belleville spring onto the ferrule. The securing means bears against the free end of the ferrule to compress the spring to provide a substantially uniform operating torque from one assembly to another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.