Thk Co., Ltd.

Nippon Soda Co., Ltd.

Hoya Corporation

Hirofumi Suzuki

Yuji Kubota

Nobuo Matsui

Takehira Kaneko

Takamitsu Tomiyama

Akira Nakada

Akihiro Unno

Isami Hamamoto

Takeo Shimizu

Tomio Yagihara

Hitoshi Matsumoto

Shiro Higashida

Yuta Tsujisawa

Fuminiko Nagasaki

Toshiaki Satoh

Tetsuya Katoh

A screw device is provided which applies preload with a single nut and can easily detect preload. The screw device of includes: a screw shaft having an outer helical groove; a nut fitted on the screw shaft, the nut having an inner helical groove, and a return path to which a passage formed between the outer groove and the inner groove is connected; a plurality of rolling elements placed between the passage and the return path; and a strain sensor attached to an outer surface of the nut. At least one hole is provided between an attachment surface, to which the strain sensor is attached, of the nut and/or a vicinity thereof and an inner surface of the nut.

Preload detectable screw device

In a screw device where a shim is disposed between two nuts, a screw device that can detect preload is provided. The preload detectable screw device includes: two nuts; a shim sandwiched and compressed between the two nuts; a coupling portion configured to couple the two nuts in such a manner as to be incapable of relative rotation to each other; and a force sensor for detecting preload. A contact surface of at least one of the two nuts with the shim is provided with a recess, spaced apart from the coupling portion, in such a manner as to reduce the contact area. The force sensor is attached near the recess on an outer surface of the shim.

A coil unit connection structure is provided which can integrate locations connected to a power cable into one side in an arrangement direction of a plurality of coil units. In a coil unit connection structure that electrically connects a plurality of coil units, each of the coil units includes a coil and a return wire. A plurality of the coils of the plurality of coil units is electrically connected to each other. A plurality of the return wires of the plurality of coil units is electrically connected to each other. A terminal unit is provided which includes a connecting wire that electrically connects the coil and the return wire of the coil unit at the terminal end.

Coil unit connection structure

By the selective use of a homogeneous stable precursor solution in which no polymerization reactions immediately occur and which contains aromatic compounds such as pyrrole, thiophene, aromatic amines or their derivatives, oxidizing agents, and solvents, as a precursor solution of conductive polymer film, a homogeneous and tough conductive polymer film can be obtained when the said precursor solution is cast on a substrate and the solvents are evaporated to remove.

Method for the preparation of conductive polymer film

Pyrrole monomer

Growing community of inventors

Tokyo, Japan

Hirofumi Suzuki