Mechanical face seals
US5375854A · kind A · utility
12Cited by
15References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49877
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A metal bellows for use in a mechanical seal is rolled from a flat sheet and seam welded along an axial diagonal line. The bellows includes corrugations or convolutions having inner and outer crowns of identical radii. The end corrugation or convolution at each end of the bellows is axially compressed to provide an annular double-thickness bearing and support surface against which an end ring is located in face-to-face connection. A similar bellows of multiple plies is similarly constructed using a plurality of tubular bodies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.