Seal grid system for a rotary piston mechanism

Details Seal grid system for a rotary piston mechanism Seal grid system for a rotary piston mechanism

1978-08-09

1980-06-10

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Grooved working member surface

418 81, 418113, 418142, F01C 102, F01C 1908

Patent

active

042070392

ABSTRACT:
The seal grid system for a rotary piston mechanism of the Wankel-type comprises apex seal blades, a conventional side seal assembly consisting of side seal strips and button or seal pins carried on one side face of the rotary piston and a sealing surface portion or rib projecting axially from the other side face of the rotary piston and extending endlessly around the rotor face. The seal surface portion is spaced radially inwardly from the peripheral surfaces of the rotary piston to expose a portion of the other side face to the pressurized gases in the working chambers so that the axial forces on each of the side faces of the rotary piston are at least in part counter-balanced.

REFERENCES:
patent: 2940399 (1960-06-01), Zieg et al.
patent: 3955904 (1976-05-01), Catterson

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