Topy Industries, Limited

Efuesukei Kabushiki Kaisha

Aderans Company Limited

Toshihiko Sato

Masahiro Nakajima

Yoshihisa Mineura

Masayoshi Kaneko

Katsuo Sugai

Hisahiko Kusano

Takahiko Sahara

Hitoshi Sakashita

Yasuhisa Sotokawa

A heat treatment process applicable to bushings used in tracks of endless track tractor comprises heating a bushing made of middle carbon low alloy steel material from the outer peripheral surface thereof until the inner circumferential surface thereof achieves a temperature range of Ac.sub.3 .ltoreq.T.ltoreq.Ac.sub.3 +50.degree. C. where T is the temperature in .degree.C. of the heated circumferential surface and Ac.sub.3 is the transformation temperature in .degree.C. of the steel. The heating is accomplished with an induction heating whereafter the steel is cooled from the outer peripheral surface, resulting in hardening the same along the entire thickness thereof. The treatment is followed by tempering of the steel.

Heat treatment process for bushing used in track of endless track tractor

An adhesive sheet which comprises a support sheet and an adhesive layer containing a migratory substance, disposed on one side of the support sheet. This adhesive sheet may be applied to many types of articles and will leave behind a dye mark on the article indicating that it has been applied and subsequently removed.

Adhesive sheet

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Tokyo, Japan

Toshihiko Sato