Nippon Kinzoku Co., Ltd.

Nippon Steel Corporation

Toyota Jidosha Kabushiki Kaisha

Nsk-Warner Kabushiki Kaisha

Toshiyuki Yashiro

Mikio Yamanaka

Keiichi Ohmura

Shinichi Matsumoto

Toshihiro Takada

Akihiko Kasahara

Kazuo Takagi

Masaki Izumi

Yasushi Nakamura

Hikaru Aoyagi

Shinji Shibata

Shinzi Shibata

Shigetoshi Sugimoto

Hisashi Baba

Hiroo Wakiyama

Mitsuo Takei

Noboru Owatari

Motohiko Arakawa

An exhaust gas purifying catalyst of this invention comprises a heat resistance stainless steel catalyst support, an oxide film containing zirconium oxide formed on the heat resistance stainless steel catalyst support, an activated alumina catalyst carrier layer formed on the oxide film, and at least one metal catalyst loaded in the activated alumina catalyst carrier layer. Thus, the activated alumina catalyst carrier layer's come-off from the catalyst support and the oxidation of the catalyst support are suppressed at the same time, and the conversions of the hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) are also improved.

Exhaust gas purifying catalyst

A rolled high Al stainless steel foil for use as a substrate for a catalyst carrier, which comprises more than 12 wt % up to 20 wt % of Al, from 5 to 25 wt % of Cr, from 0.05 to 2 wt %, in total, of at least one element selected from the group consisting of Ti, Nb, Zr, and Hf, and the remainder substantially consisting of Fe and unavoidable elements. The stainless steel foil has an excellent resistance to oxidation in an engine exhaust gas at a temperature of 1150.degree. C. or higher, can be obtained by foil-rolling, and enables a reduction of the exhaust back-pressure and weight of automobile catalyst converters.

Rolled high aluminum stainless steel foil for use as a substrate for a

A process for producing a metallic catalyst-carrier, comprising the steps of: preparing a steel sheet containing 9.0 to 25.0 wt % Cr and 0.01 to 6.0 wt % Al, plating the steel sheet with Ni at an amount of from 0.3 to 10.0 g/m.sup.2, then plating with Al or Al-alloy at a plated amount defined by the formula; ##EQU1## and with a provision that the thickness of an Al-Fe alloyed layer is controlled to a thickness of 10 .mu.m or less, cold rolling to a rolled thickness of 0.1 mm or less, working to a body of a required form, and heat-treating the body.

Processes for production of metallic catalyst-carrier and catalytic

In a carrier for a catalyst for purifying exhaust gas, a honeycomb is formed by coiling a corrugated sheet and a flat sheet together, and is mounted in an outer cylinder. An Al (alloy)-clad foil or hot-dip Al (alloy) galvanized foil is used to form the honeycomb, which is heat treated in a vacuum or a reducing atmosphere to simultaneously bond the corrugated sheet and flat sheet together and also bond the honeycomb to the outer cylinder, and to diffuse Al into the foil.

Method for producing a base of a catalyst carrier for automobile exhaust

There is provided a winding spring for a seat belt winding apparatus which comprises an output drum and a take-up drum. The winding spring is stretched in the S-shaped form between the output drum and take-up drum. In the normal use region of the entire length of the winding spring, the natural radius of curvature of the spring is gradually increased. In the surplus use region of the spring, the natural radius of curvature of the spring is divided into a part where it is gradually decreased and a part where it is kept constant. The natural radius of curvature in the free end portion of the winding spring is increased.

Winding spring for seat belt winding apparatus

Growing community of inventors

Tokyo, Japan

Toshiyuki Yashiro