Ntn Corporation

Nidec Corporation

Tatsuya Hayashi

Natsuhiko Mori

Tatsuo Kawase

Katsuo Shibahara

Kiyotaka Kusunoki

Fuminori Satoji

Isao Komori

Tetsuya Kurimura

Masaharu Hori

Yasuhiro Yamamoto

Jun Hirade

Kimihiko Bito

Toshiaki Niwa

Takeru Ito

Mitsuhiro Moriuchi

A vertical axis wind turbine () includes a vertical rotation shaft () and a plurality of vertical blades () arranged around the rotation shaft and attached to the rotation shaft through an arm (). Each of the blades () includes a blade main part () and blade-tip inclined parts () extending from upper and lower ends of the blade main part () toward the rotation shaft (). Each of the blade-tip inclined parts () has a smaller thickness than a thickness of the blade main part (). A wind power generating device () includes a vertical axis wind turbine () having the above configuration and a generator ().

Vertical axis wind turbine, and wind power generating device and lighting facility comprising same

A rolling bearing retainer which is formed by insert molding a resinous material together with a core member within a mold, in which the core member is embedded within a resin part made of the resinous material and a support area exposure part is provided at a plurality of locations of the resin part for exposing a support area of the core member supported within a cavity of the mold. The resin part includes a ring shaped body and a plurality of support column bodies extending axially from the ring shaped body and defining a pocket for retaining a rolling element therebetween, and the core member is provided with a ring shaped body embedded part and a plurality of support column body embedded parts extending from the ring shaped body embedded part.

Rolling bearing retainer and method for manufacturing such retainer

After a three-dimensional antenna pattern () is formed by bending a conductive plate, the three-dimensional antenna pattern () thus bent is supplied in an injection molding die set as an insert component and a base () is formed by injection molding of a resin. With this, a chip antenna () comprising the three-dimensional antenna pattern () can be formed easier as comparison to a case where the antenna pattern is formed over a plurality of surfaces by printing and the like.

Chip antenna and manufacturing method thereof

Providing a fluid dynamic bearing device, wherein the outer member comprises a member formed by a pressing process on a plate member, the radial bearing surface and at least the one of the thrust bearing surfaces of the outer member being formed by the pressing process, and wherein at least a part of the inner member, which forms the radial bearing surface and the thrust bearing surfaces of the inner member, is made of a sintered metal.

Fluid dynamic bearing device and assembly method for same

The present invention has an object of improving wear resistance of a thrust bearing portion. A pressure is generated by a dynamic pressure effect of a lubricating oil in a thrust bearing gap between a thrust bearing surface including dynamic pressure generating grooves and a smooth thrust receiving surface so as to rotatably support a shaft member in an axial direction. The thrust receiving surface is formed as a flat surface, whereas an inclined plane is provided on the thrust bearing surface so as to provide a reduced portion having a decreasing axial width in a radially outward direction in the thrust bearing gap.

Dynamic bearing device having a thrust bearing portion

A hydrodynamic bearing device has favorable bearing performance and long endurance life. A thrust bearing part of the hydrodynamic bearing device has a second thrust surface. In the second thrust surface, a dynamic pressure generating groove area having a plurality of dynamic pressure generating grooves is formed in at least a part thereof in a radial direction. The action of dynamic pressure of lubricating oil increases the pressure in a thrust bearing clearance between an end of a flange part of an axial member and the second thrust surface, to support the axial member in an axial direction in a non-contact manner. The dynamic pressure generating groove area of the second thrust surface is formed by press working. The difference in height between the inner and outer peripheral edges of the surface of the dynamic pressure generating groove area regulated between or equal to 0 and 2 &#x3bc;m.

Growing community of inventors

Kuwana, Japan

Tatsuya Hayashi