Rotary expansible chamber devices – Nutating working member – With mechanical sealing
Patent
1976-07-02
1977-11-01
Vrablik, John J.
Rotary expansible chamber devices
Nutating working member
With mechanical sealing
418 53, 418123, F01C 102, F01C 1900, F04C 2700
Patent
active
040563367
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.
REFERENCES:
patent: 3159336 (1964-12-01), Paschke
patent: 3182641 (1965-05-01), Lamm
patent: 3958907 (1976-05-01), Goloff
Clarke et al., A New Class of Rotary Piston Machine Suitable for Compressors, Pumps, and Internal Combustion Engines, Proceedings at Institute of Mechanical Engineers, 1972, vol. 186, 62/72, pp. 743-753, 418-453.
Caterpillar Tractor Co.
Vrablik John J.
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