Multi-piece apex seal structure for a rotary piston engine

Details Multi-piece apex seal structure for a rotary piston engine Multi-piece apex seal structure for a rotary piston engine

1980-09-02

1983-09-13

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Seal on working member periphery separates inlet and outlet...

418123, F01C 1904

Patent

active

044039301

ABSTRACT:
An apex seal structure of two-piece construction including a main or sealing piece and an under or support piece which are disposed in a sealing groove in a rotor apex portion with a superposed relationship with each other. The main piece has a bottom surface which is in engagement with the top surface of the under piece, the bottom surface of the main piece being perpendicular to the side surfaces thereof, and the top surface of the under piece to the side surfaces thereof. In order to prevent inclination of the main piece in the sealing groove, the gap between the main piece and the sealing groove is decreased. For the purpose of avoiding any delay of induction of gas pressure behind the pieces, the width of the under piece is decreased with respect to that of the main piece so that an adequate gap is provided between the under piece and the sealing groove.

REFERENCES:
patent: 3120815 (1964-02-01), Froede
patent: 3176909 (1965-04-01), Maurhoff
patent: 3685922 (1972-08-01), Lamm

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