Unitized seal biasing spring assembly for rotary mechanisms
US3989425A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1975 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | May 1, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C19/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A long-lived, unitized seal biasing spring assembly for use in rotary mechanisms such as rotary engines. The rotary mechanism with which the invention is to be used includes an operating chamber and a rotor within the chamber. At least one seal retaining groove is provided in the rotor and the seal is retained in the groove and extends partially out of the groove into sealing engagement with the chamber. A unitized, multi-leaf spring assembly made according to the invention is disposed in the groove and engages the seal to bias the seal into sealing engagement. Through the use of a unitized construction, assembly is facilitated while the use of a multi-leaf biasing spring arrangement dramatically reduces spring stress substantially prolonging the useful life thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.