Hitachi Global Storage Technologies Japan, Ltd.

Mikuni Corporation

Takahiro Kato

Hiroshi Kikuchi

Noriyuki Saiki

Yukihiro Isono

A compact throttle device with a short air intake pipe length. A throttle device includes: throttle bodies that define air intake paths; throttle valves that are disposed in the air intake paths and adjust the air flow rate in the air intake paths; a throttle shaft that rotatably supports the throttle valves; a motor that rotates the throttle shaft; and a gear that connects the throttle shaft to the motor. A pin is provided as a protrusion on the peripheral surface of the throttle shaft. The gear externally fitted and fixed to the throttle shaft has, on a fixing ring that is externally fitted to the throttle shaft, a housing groove for housing the pin, the housing groove being impelled against the pin by a spring.

Throttle device

The present invention forms a conductor that is in electrically conductive contact, through an inside metal layer, with the magnetic thin film of the recording magnetic pole of a thin film magnetic head, and is also exposed to the outside. The equilibrium electrode potential of the conductor in an aqueous solution is set higher than that of the magnetic thin film, and its surface area is larger than the cross-sectional area of the magnetic thin film on the air bearing surface facing the magnetic recording medium. This makes it possible to retard corrosion of the recording magnetic thin film in the process of manufacturing thin film magnetic heads, whereby depletion of the magnetic thin film due to corrosion can be prevented, resulting in improved recording and reproducing qualities.

Growing community of inventors

Odawara, Japan

Takahiro Kato