Composite powdered metal combustion seal ring
US5454574A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/94
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An annular combustion seal ring for an engine gasket includes a central section having a generally circular cross-section and at least one tab section extending radially away from the central section. The ring is formed from a homogeneous composite powdered metal with material zones of varying densities. The composite powdered metal combustion seal ring has numerous advantages. Not only is it possible to design and manufacture a ring having a desired yield strength in both the vertical and hoop directions, but the stiffness along a particular axis may be selectively varied as a function of seal loading. Also, the varying density zones may provided by layers of material. In other aspects of the invention, the powdered metal may be primarily titanium with trace elements of the composite powdered metal providing lubrication to reduce the coefficient of friction at the ring's outer surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.