Rotary expansible chamber devices – With wear surface treatment or integrally plated wear layer
Patent
1987-03-16
1988-07-05
Vrablik, John J.
Rotary expansible chamber devices
With wear surface treatment or integrally plated wear layer
418179, 291564WL, F01C 2100
Patent
active
047551160
ABSTRACT:
A rotor housing for a rotary piston engine having improved gas sealing property between the inner surface and apex seals mounted on a rotor. The rotor housing has an inner surface applied with a hard layer such as chrome plating. The portions of the hard layer surrounding openings of plug holes at the inner surface side are formed with softened areas having lower hardness than the apex seals. The softened areas can be made by a high-energy beam such as a laser beam. Should portions surrounding the openings of the plug holes be thermally deformed to project inward and scratch the apex seals, the projected portions formed of the softened areas will be worn before the apex seals. Hence, uneven wearing of the apex seals can be avoided, which prevents degradation of the gas sealing property and consequently prevents drop in the compression pressure in the working chambers.
REFERENCES:
patent: 3512907 (1970-05-01), Belzner
patent: 3722480 (1973-03-01), Berkowitz
patent: 3851627 (1974-12-01), Terazawa
patent: 3892028 (1975-07-01), Dobler
patent: 4056339 (1977-11-01), Doi et al.
Tarumoto Kouji
Yamamoto Jun-ichi
Yamamoto Yoshifumi
Mazda Motor Corporation
Vrablik John J.
Walnoha Leonard P.
LandOfFree
Rotor housing for a rotary piston engine having softened areas s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotor housing for a rotary piston engine having softened areas s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotor housing for a rotary piston engine having softened areas s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2329764