Inner seal for rotary piston engines and method of making same

Details Inner seal for rotary piston engines and method of making same Inner seal for rotary piston engines and method of making same

1976-11-05

1978-03-21

Smith, Robert I.

Rotary expansible chamber devices

With mechanical sealing

Seal element between working member and cylinder

418 81P, F01C 1900, F04C 1500, F04C 2700

Patent

active

040801209

ABSTRACT:
An inner or end seal ring for a rotary piston engine and a method of making the seal ring in which an annular sheet metal strip is formed to a U-shape which opens in the axial direction, while an insert ring having radially disposed axially extending partition elements thereon is placed in the seal ring. The radially inner leg of the seal ring inclines inwardly toward the central axis of the seal ring and the axially outer portion of the radially outer leg of the seal ring also inclines inwardly and holds the insert ring and partition elements thereon captive in the seal ring. The outer ends of the seal ring legs and of the partition elements are co-planar.

REFERENCES:
patent: 3816041 (1974-06-01), Eierman
patent: 3884602 (1975-05-01), Phillips
patent: 3909015 (1975-09-01), Kasahara

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