Honda Giken Kogyo Kabushiki Kaisha

Meira Corporation

Hideaki Miyashita

Satoshi Takahashi

Yoshiaki Akimoto

Hideo Ueshima

Manabu Naoi

Yukihiro Noguchi

Takemi Matsumoto

A self tapping bolt which fastens a mounting member and a receiving member while the bolt cuts internal threads on an inner surface of a tap drill hole prepared in the receiving member. The bolt includes at least one groove formed near an end of a threaded portion of the bolt and a blade for cutting the internal threads. The bolt includes the feature of the blade being formed only on a rear end surface of the groove relative to a rotational direction of the bolt which is screwed into the tap drill hole.

Self tapping bolt

Oil passages,for lubricating and cooling a piston pin,are provided in such a manner as to each open to an oil ring groove,of a piston,and to a piston inner side surface,of a piston pin supporting part,at portions in the vicinity of an upper end of a piston-pin hole,through the piston pin supporting part,. The oil passages,are provided diagonally relative to an axis of the piston-pin hole

Oil passage arrangement in a piston

Growing community of inventors

Saitama, Japan

Hideaki Miyashita