Abstract: An incinerator including a first combustion chamber having a rotatable hearth for initially drying and partially burning waste materials and a second combustion chamber comprising a fluidized bed furnace for receiving the partially burnt materials from the first chamber and completing the burning thereof.
Type:
Grant
Filed:
May 14, 1979
Date of Patent:
January 13, 1981
Assignee:
Riken Piston Ring Kogyo Kabushiki Kaisha
Abstract: In a sliding mechanism including a first sliding surface, a sliding member having a second sliding surface which contacts with the first sliding surface and slides relatively to the first sliding surface, and a holding member holding the sliding member in contact, while moved, at least a contact portion of the seal member with the holding member is made of polytetrafluoroethylene resin containing iron alloy powder.
Type:
Grant
Filed:
November 5, 1976
Date of Patent:
July 4, 1978
Assignee:
Riken Piston Ring Kogyo Kabushiki Kaisha
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.
Type:
Grant
Filed:
June 9, 1976
Date of Patent:
February 21, 1978
Assignee:
Riken Piston Ring Kogyo Kabushiki Kaisha
Abstract: A rotary piston internal combustion engine has a rotor journalled on an eccentric portion of an engine shaft. A sealing arrangement comprises a first radially extending annular face connected to the engine shaft, a disc connected to the rotor and having a second radially extending annular face, and a sealing ring disposed between the first and second faces. A spring biases the sealing ring to maintain sealing contact of the sealing ring with one of the first and second faces. An O-ring is disposed between the sealing ring and that one of the rotor and engine shaft which is in rotatable unison with the other one of the first and second faces.
Type:
Grant
Filed:
May 16, 1975
Date of Patent:
June 7, 1977
Assignees:
Nissan Motor Co., Ltd., Riken Piston Ring Kogyo Kabushiki Kaisha
Abstract: An oil seal ring is obtained which can maintain its oil scraping performance at a satisfactory level despite the frictional wear it undergoes. It is formed with a tapered sliding surface having a hardness maximized at its oil scraping edge and decreasing with the distance therefrom. It can be manufactured by casehardening a ring blank through one end surface thereof which is oppositely tapered and subsequently finishing the end surface to shape.
Type:
Grant
Filed:
May 30, 1973
Date of Patent:
March 30, 1976
Assignee:
Riken Piston Ring Kogyo Kabushiki Kaisha