Fluorocarbon resin seal and method of making same
US4190258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1978 |
| Grant date | Feb 26, 1980 |
| Priority date | — |
| Expiry date | Jan 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/924
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sealing element is provided which is formed of a fluorocarbon resin sheet and radially slit into two annular overlapping flaps to receive a garter spring or the like therebetween at a location adjacent to that peripheral portion of the element which is left solid and formed with a sealing edge. Despite of the limited elasticity of the seal material per se, the sealing element, finally molded into shape, has an exceedingly high ability to follow the mating surface of a rotating shaft or other member of a mechanical assembly to be sealed. The followability of the sealing element is further improved on account of the slit formation of the element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.