Rotary piston engines

Details Rotary piston engines Rotary piston engines

1977-03-30

1978-06-13

Croyle, Carlton R.

Rotary expansible chamber devices

With wear surface treatment or integrally plated wear layer

418179, F01C 2100

Patent

active

040946185

ABSTRACT:
Rotor housing for rotary piston engines having a base and a chromium-plated inner wall. The base is made of an iron-based material having a hardness of not less than 105 in Vickers' scale and the chromium-plated layer has a hardness not less than 850 in Vickers' scale. The rotor housing is used with a rotor having apex seals of iron-based material which includes 50 to 75% in volume of carbide at least in a sliding surface which is adapted to be brought into sliding engagement with the inner wall of the rotor housing, said apex seal having a hardness of 700 to 900 in Vickers' scale at the sliding surface.

REFERENCES:
patent: 3299482 (1967-01-01), Tache et al.
patent: 3658451 (1972-04-01), Gomada
patent: 3712767 (1973-01-01), Beutter
patent: 3830601 (1974-08-01), Yamazaki
patent: 3890070 (1975-06-01), Sasame et al.

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