Apex seals for slant axis rotary mechanisms
US4056336A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1976 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Jul 2, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01C19/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved apex seal construction for slant axis rotary mechanisms. The mechanism includes a housing defining a chamber having radially inner and outer spherical walls interconnected by opposed, generally radially extending side walls, a shaft journalled in the housing and having an angularly offset portion within the chamber, a rotor within the chamber and journalled on the angularly offset portion. The rotor has a spherical hub and a peripheral, radially outwardly extending flange having plural apexes on each side thereof, each apex being provided with an apex seal receiving groove extending radially the length of the flange and into the hub. An apex seal is loosely received in each groove and extends therefrom to sealingly engage a corresponding one of the side walls. The improved apex seals according to the invention and their corresponding grooves are dimensioned to have a lesser clearance interiorly of the groove than at the point of emergence of the grooves from the flange so as to narrow the gas leakage path about the seals through the grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.