Seal assembly
US4406468A · kind A · utility
3Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1982 |
| Grant date | Sep 27, 1983 |
| Priority date | — |
| Expiry date | Apr 14, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/915
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
This invention is a seal assembly for sealing fluid needles, spindles and other movable cylindrical objects where a fluid tight seal is needed between the fluid and non-fluid sides of the movable cylindrical object. The seal includes a packing member with a sharply cut-off tubular end and a stop member with a conical recess, both of which encircle the movable cylindrical object. An unrestrained flow cavity is defined by the packing member and the stop member. Positioned behind the packing member are a spring and washer which axially bias the packing member into the conical recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.