Rotary expansible chamber devices – With wear surface treatment or integrally plated wear layer
Patent
1976-06-09
1978-02-21
Freeh, William L.
Rotary expansible chamber devices
With wear surface treatment or integrally plated wear layer
418179, F01C 2100
Patent
active
040749568
ABSTRACT:
A rotary piston engine has a pair of side housings made of high silicon aluminum alloy and a rotor made of iron-based material. The side surfaces of the rotor are subjected to a surface treatment called "Sulfinuz" to form surface layers rich in sulphur and nitrogen for minimizing scuffing between the side surfaces of the side housings and the side surfaces of the rotating rotor due to thermal expansion of the side housings and vibration of the rotor.
REFERENCES:
patent: 2707159 (1955-04-01), Foucry et al.
patent: 3197125 (1965-07-01), Bachman et al.
patent: 3333579 (1967-08-01), Shockley et al.
patent: 3359956 (1967-12-01), Bentele
patent: 3712767 (1973-01-01), Beutter
patent: 3808955 (1974-05-01), Hamada et al.
patent: 3903951 (1975-09-01), Kaweko et al.
Hamada Yoshitugu
Maruyama Masayuki
Yamauchi Ryoichi
Freeh William L.
Riken Piston Ring Kogyo Kabushiki Kaisha
Smith Leonard
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