Panasonic Intellectual Property Management Co., Ltd.

Sumitomo Electric Industries, Limited

Nippon Telegraph and Telephone Corporation

Yoshiyuki Kita

Mario Bellini

Tomohiro Kanazawa

Naoki Kohyama

Hirokazu Haraguchi

Kenshi Tsuji

Atsushi Shimada

Yuuki Sasagawa

Akitoshi Kasahara

Harumoto Yasui

A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 μg per 1 g of the metal wire.

Metal wire

An air spring includes an upper surface plate, a lower surface plate, and a diaphragm connecting the upper surface plate and the lower surface plate. The diaphragm has an annular shape having an opening on an inner circumferential side. In the diaphragm, an upper surface plate contact portion, which is a region defining the opening and being in contact with the upper surface plate, includes a deformed portion elastically deformed to protrude toward the lower surface plate side by contact with a support plate. The deformed portion is in contact with a sliding member located on the lower surface plate side when viewed from the deformed portion.

Air spring

Telephone

Growing community of inventors

Osaka, Japan

Yoshiyuki Kita