Toyota Shatai Kabushiki Kaisha

Nippondenso Co., Ltd.

Takayuki Suzuki

Eiichiro Morozumi

Michi Hashiba

Yoshimitsu Yamaguchi

Masahiro Asano

Akira Masuda

Masanori Suzuki

Yasuo Hibi

Kanekiyo Narita

A separator includes a base including projections. The base is made of a metal plate. The separator includes a conductive layer arranged on a top surface of each of the projections of the base. The conductive layer includes conductive carbon materials, conductive particles, and a thermosetting resin. The conductive carbon materials and the conductive particles are dispersed in the resin and are in contact with each other over an entirety of the conductive layer in a thickness direction of the conductive layer.

Method for producing separator for fuel cells

A separator includes a base material made of metal plate and a first layer made of corrosion-resistant material and arranged on the entirety of one surface of the base material. The base material includes extending projections and extending recesses. The projections and the recesses are alternately arranged. The separator includes a second layer including a conductive particle and a binder that is made of plastic material, the second layer being arranged only on a part of a surface of the first layer corresponding to a top surface of the projections of the base material. The conductive particle is contained only in the second layer.

Fuel cell separator and method for manufacturing fuel cell separator

A separator assembly for a fuel cell includes a first separator, a second separator, and a joined portion. In the joined portion, the first separator and the second separator are joined to each other through laser welding. The first separator includes a first surface that is intended to be opposed to the membrane electrode assembly. The first surface of the first separator includes an exposed portion where the base of the first separator is exposed. The second separator includes a second surface that is intended to be opposed to the membrane electrode assembly. A film including conductive particles is arranged on the entire second surface of the second separator. The joined portion is formed by irradiating the exposed portion of the first separator with laser.

Separator assembly for fuel cell and method for manufacturing separator assembly for fuel cell

A cutting device capable of obtaining high speeds, approximately three times faster than known cutting devices by using a structure employing an internal positive cam. A rotary slider rotates upon rotation of a spline shaft via a gearbox, and the operation is such that a track of a wedge-shaped blade tip of a male cutter lies along a workpiece via cam followers slidably rotating over a sliding surface of an internal positive cam, cutting the workpiece.

Cutting device

A tape like material including synthetic resin for a filter element is bent into a corrugated pattern while the material is passed between pairs of forming and cutting rollers. Since pairs of cutters are provided within the rollers and since guide plates are provided around the rollers, the material is held abutting the rollers even when the material is cut by the cutters. The material is then conveyed within a reducing drum. The pitch of the corrugated portions formed on the material is reduced and the material is formed into a semicircular shape within the reducing drum. After passed the reducing drum, the material is transferred to a forming path. Since the forming path has an introducing portion having a semicircular sectional shape similar to that of the material leaving the reducing drum, an outlet portion having a circular sectional shape similar to that of the finished filter element and an intermediate portion having a sectional shape gradually varied from the shape of the introducing portion to the shape of the outlet portion, the material is shaped to a complete circle while the material travels along the forming path. A crystal type filter element is thus formed from a tape like material automatically.

Growing community of inventors

Kariya, Japan

Takayuki Suzuki