Aisin Seiki Kabushiki Kaisha

Riken Corporation

Pulstec Industrial Co., Ltd.

Takayuki Hayashi

Takuya Niimi

Akihiro Okamoto

Ryo Okazaki

Satoshi Kawata

Takuo Tanaka

Keiki Sugano

Masahiko Ujiie

Hiroyoshi Hiejima

Atsushi Kuniyasu

A sliding component for an internal combustion engine includes: a sliding component main body that includes a plurality of concave portions formed in a predetermined portion thereof; and a coating layer that covers a portion of the sliding component main body, in which the plurality of concave portions are not formed.

Sliding component for internal combustion engine and method of manufacturing sliding component for internal combustion engine

A piston for an internal combustion engine includes a piston main body for the internal combustion engine, and a crosshatched groove being formed on a surface of the piston main body. The crosshatched groove includes a crosshatch angle that corresponds to a crossing angle of lines that configure a crosshatch, the crosshatch angle that is set at a range from equal to or greater than 15 degrees to equal to or less than 35 degrees.

Piston for internal combustion engine and manufacturing method thereof

An optical pickup apparatus comprises an orbicular zone forming lens groupfor forming the section of the laser beam, which is irradiated to an optical disc DK having plural recording layers, into an annular shape, a condenser lensthat converges the reflected beam from the optical disc DK, and a pinhole platehaving formed thereto a pinholewith a size corresponding to a flux diameter of the reflected beam converged by the condenser lens. The orbicular zone forming lens grouprefracts the laser beam irradiated to the optical disc DK so as to form the section of the laser beam into an annular shape in order that the internal diameter of the annular converged flux formed on the pinhole plateby the reflected beam from the recording layers other than the recording layer having an optical spot formed thereon becomes greater than the diameter of the pinhole

Pickup apparatus for multi-layer optical disc

Growing community of inventors

Toyokawa, Japan

Takayuki Hayashi