Articulated joint including Belleville spring seals maintained in preselected compressed state
US4203684A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1979 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Mar 15, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32926
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A first member includes a pair of parallel portions disposed on opposite sides of a second member and pivotally interconnected thereto by means of a pivot pin assembly including aligned holes in the parallel portions and the second member. The pivot assembly further includes a bushing received in the hole of the second member and a pin received in the bushing and in first and second collars respectively press fit into the holes in the pair of parallel portions. In a first embodiment the collars respectively act directly against first and second sets of Belleville springs received on the pin at the opposite ends of the bushing. In a second embodiment the collars respectively act against a pair of flat washers to hold the latter against the opposite sides of the second member and against the sets of Belleville washers. In a third embodiment the collars have a larger outside diameter than does the hole in the second member and the collars are positioned directly against the opposite sides of the second member and in engagement with the sets of Belleville washers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.