Exedy Corporation

Kabushiki Kaisha Daikin Seisakusho

Kenji Mieda

Mamoru Ookubo

Takayuki Iwasaki

Shinji Fujimoto

Heiji Fukutake

Takeshi Kawamoto

Hideki Tanishiki

Hajime Yoshida

A strong lightweight front cover that prevents distortion of a sliding contact surface when the front cover and impeller shell are welded together is provided. The front cover has a radial flange part and an axial flange part that extends from an outside edge of radial flange part . The radial flange part has a sliding contact surface on an axially facing surface thereof for sliding against a friction facing . The axial flange part has a connection part that connects to the radial flange part and a welding part that is connected by welding to a pump impeller. The various portions of the front cover have differing rigidities and thicknesses.

Fluid-type torque transmission device with lockup clutch

A multi-disk clutch is provided with a reduced thickness so that the size of devices, such as a transmission employing the multi-disk clutch can also be reduced. The multi-disk clutch is configured to transmit and interrupt a torque between a radially outer wall and a second cylindrical portion of a spline hub. The multi-disk clutch includes a plurality of first friction plates and a plurality of second friction plates Radially outer portions of the first friction plates are coupled in a circumferential direction to the radially outer wall Each second friction plate has a core plate and a friction facing The core plate has a friction mounting portion opposed to the first friction plate and tooth portions. The tooth portions are in mesh with the second cylindrical portion of the spline hub. The friction facing is joined to the friction mounting portion. The friction mounting portion has a smaller thickness than the tooth portion.

Multi-disk clutch and method of manufacturing a core plate of a multi-disk clutch

A heat gathering device 1 is provided with a reflection plate assembly 2 and a heat gathering tube 3 with a glass tube 4 surrounding the reflection plate assembly 2 and the heat gathering tube 3. The reflection plate assembly 2 is designed to provide a structure which is capable of maintaining the accuracy of a compound paraboloid in a heat gathering device having a compound paraboloid. The reflection plate assembly 2 is an assembly for gathering light having a compound paraboloid, which is formed by combining two paraboloids 21a and 21b. The reflection plate assembly 2 includes a reflection plate 21 and a plurality of brackets 22. The reflection plate 21 is formed by specularizing and forming a compound paraboloid surface through a bending process on a side where light is gathered. The brackets 22 are installed on the reflection plate 21 on an opposite side of the side where light is gathered.

Heat gathering device having a reflection plate assembly

A metalworking iterative method of cold-working blanks into configurations having contiguously repeated predetermined forms wherein an advance-worked form functions to locate a succeeding form. A first portion of a blank is squeezed into a predetermined form in a forming position of a press. The predetermined form corresponds to one cycle of the reciprocal undulations of an undulated plate spring. The blank is then shifted in the feed direction of the press by a feed pitch corresponding to one undulation, thereby locating the worked first portion of the blank into a locating position of the press, meanwhile a pitch-length second portion is in the forming position. Accordingly, the accuracy of the succeeding press operation on the second portion in terms of its contiguous position relative to the worked first portion is secured. Moreover, press dies which conform to the predetermined form are sufficient to cold-work the blanks, and can be smaller than dies corresponding to the entire finished configuration working press space requirements are reduced, curtailing costs accordingly.

Metalworking method wherein formed configuration locates blank

A manufacturing method of a clutch cover assembly comprising a first process in which an annular clutch cover body of a clutch cover is formed, a plurality of projections extending substantially radially inwardly from the inner periphery of the clutch cover body are formed and ends of said projections are bent so that the projections may extend in an axially inside direction of the clutch cover and toward a center of the clutch cover; a second process in which projection bodies between the clutch cover body and said projection ends are bent so that the projection bodies may extend in the axially inside direction of the clutch cover and toward the center of the clutch cover; and a third process in which a diaphragm spring and a pair of wire rings disposed at both sides of said spring for forming fulcrums for the spring are assembled to the projections, and then, the projection bodies are bent in a radially outward direction of the clutch cover and the projections ends are bent toward the inner peripheral portion of the clutch cover.

Manufacturing method of a clutch cover assembly

A manufacturing method of a clutch cover assembly comprising an annular clutch cover provided with a plurality of projections, a diaphragm spring, and a pair of wire rings supported by said projections, characterized in that; said method comprises supporting the lower surface of the diaphragm spring, to which the wire rings have been assembled, by a lower die in such a position that said projections project upwardly from a body of the clutch cover; supporting radially inner sides of portions of said projection bodies positioned below the diaphragm spring by a projection body support provided in the lower die; downwardly bending the free ends of the projections, which incline upwardly from the projection bodies, to predetermined positions by an end pushing-down portion provided in the upper die; and supporting radially inner sides of portions of said projection bodies positioned above the diaphragm spring by a projection body support provided in the upper die.

Growing community of inventors

Hirakata, Japan

Kenji Mieda