With Wear Surface Treatment Or Integrally Plated Wear Layer Patents (Class 418/178)
  • Housing for circular piston combustion engine of trochoid type and method of producing the same
    Patent number: 3942917
    Abstract: A housing for circular piston combustion engines of trochoid type is produced with at least one annular shell having an inner peripheral wall in the shape of a multi-arcuate trochoid, an outer peripheral wall, and end walls parallel to each other and adjoined to the ends of the shell, end pieces parallel to each other having end walls parallel to each other and an inner and an outer peripheral wall. In the case of a multiple engine at least one end piece constitutes a middle piece between neighboring shells.
    Type: Grant
    Filed: December 21, 1973
    Date of Patent: March 9, 1976
    Assignees: Audi NSU Auto Union Aktiengesellschaft, Wankel GmbH
    Inventor: Werner Wieland
  • Rotor housing for a rotary piston type engine and method for manufacturing the same
    Patent number: 3934321
    Abstract: Rotor housing for a rotary piston type engine comprising a liner made of a metal sheet having one surface formed with teeth-like projections, said liner being formed into a trochoidal configuration with said one surface directed outside, and an aluminum based metal housing substrate cast around the liner whereby firm bonding is assured between the liner and the housing substrate due to the existence of the projections. Novel method for manufacting such a rotor housing is also disclosed.
    Type: Grant
    Filed: April 9, 1974
    Date of Patent: January 27, 1976
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Hirotaka Iida, Hiroshi Masaoka, Michinobu Yamada, Mutsuo Ichihara, Yoshitaka Uebayashi, Koji Tashiro, Sadao Taketomo