Seal for machine parts that reciprocate relative to one another
US6227548A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Aug 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/909
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A seal such as a valve shaft seal for use with machine parts that reciprocate relative to each other includes an elastomer sealing lip adapted to rest with a radial spring preload on one machine part and a sleeve-shaped holder carrying the sealing lip and projecting axially beyond the sealing lip for serving to simultaneously attach the seal to a second machine part. To provide a seal with a relatively uncomplicated and inexpensive holder that ensures a safe and flawless attachment and centering, the portion of the holder projecting axially beyond the sealing lip is provided with at least one projection that is directed essentially at an angle towards the inside for engaging a recess in the outer surface of the second machine part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.