Shaft seal assembly
US6328312A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2000 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Mar 23, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/916
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Shaft seal for sealing between a shaft (2) and a machine housing (3). A seal and bearing casing (10) surrounds the shaft (2) to be sealed off and contains a rolling-contact bearing device (11) and a row of lip seals (13), the sealing lips of which engage the shaft surface (2) or a shaft protection sleeve (12). A compensation device (14) is connected, an the one hand, in a sealing manner to the casing (10) by means of a radially inner annular fastening part (23), and is connected, an the other band, in a sealing manner to the housing (3) by means of a radially outer annular fastening part (25), and has a flexible bridging portion (24) between the annular fastening parts (23, 25). The bridging portion (24) contains a first and a second elastomer ring seal (24a, 24b), which are arranged at an axial distance from one another in respective seat recesses (26, 27, 28) of the casing (10) and of the compensation device (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.