Rotary expansible chamber devices – Non-metallic working member – cylinder or partition
Patent
1988-01-15
1989-01-03
Vrablik, John J.
Rotary expansible chamber devices
Non-metallic working member, cylinder or partition
418168, F01C 110, F01C 2100, F04C 1810
Patent
active
047953268
ABSTRACT:
A rotary piston machine has inner and outer rotors rotating at unequal speeds around eccentric axes, and the rotors are provided with angularly spaced profiled teeth and gaps which cooperate during rotation to define working chambers of varying volume which move between an inlet and an outlet for a fluid medium to be pumped. The outer rotor has openings therein to provide communication between the working chambers and the inlet and outlet during rotation of the rotors, and these openings are spaced axially of the outer rotor to define a solid band of material between the openings. The solid band of material is provided with a circumferential groove in which a reinforcing belt is mounted having greater strength than the material of the outer rotor. The belt can be glass, carbon or aramide fiber would as threads and impregnated with a hardened plastic such as an epoxy resin.
REFERENCES:
patent: 2053919 (1936-09-01), Pigott
patent: 2458958 (1949-01-01), Pigott et al.
patent: 4209286 (1980-06-01), Schwartz
patent: 4735561 (1988-04-01), Wankel
Baumgartner Hans
Heikrodt Klaus
Seifert Werner
Pierburg GmbH
Vrablik John J.
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