The Furukawa Electric Co., Ltd.

Masunaga Menlo Park Co., Ltd.

Ishikawajima-Harima Jukogyo Kabushiki Kaisha

Masayuki Nakamura

Satoru Masunaga

Kaisuke Shiroyama

Kazuo Murata

Yoshikazu Kamei

Masato Sakata

Mikio Takeuchi

An antenna device (A,) for a portable telephone includes a whip antenna (,) having a larger-diameter portion (,) formed near its upper end by means of forming. The guide ring (,) consisting essentially of a synthetic resin fits on the whip antenna (,), such that the guide ring (,) abuts against the larger-diameter portion (,) to rest at a position below the larger-diameter portion. The whip antenna (,) and the guide ring (,) are coated with a coating layer (,) consisting essentially of a synthetic resin. The coating layer (,) has a main portion (,) coating the whip antenna (,) below the guide ring (,), and a joint portion (,) coating the guide ring (,) and the larger-diameter portion (,). A helical antenna (,) is arranged such that it is electrically connected to a metal terminal (,) and is mechanically connected to the whip antenna (,) through the joint portion (,) and the metal terminal (,). The helical antenna (,) is coated with a block (,) consisting essentially of a synthetic resin.

Method of manufacturing an antenna device for portable telephone

A Ni--Ti superelastic alloy demonstrates superelastic properties at normal temperatures from about 0 and 30.degree. C. The superelastic alloy allows shape alteration when the temperature is in excess of 40.degree. C. The Ni--Ti superelastic alloy is produced by plastic working a composition containing essentially Ni and Ti, and subjecting the composition to heat treatment at a temperature between 600 and 800.degree. C. to impart shape memory. When the Ni--Ti superelastic alloy is used in an eyeglass frame, it allows the shape of the pad arms to be adjusted at temperatures above about 40.degree. C.

Eyeglass frame and fabrication method

Composite parts of Ni-Ti alloys joined to a different metal have a melt forged structure obtained through the reactive fusion of both metals, initiated by the fusion of at least one metal bordering on the joint interface and the application of pressure; a hot forged structure of Ni-Ti alloy obtained through softening the alloy at high temperature and applying pressure on the Ni-Ti alloy side of the joint; and a hot forged structure of the different metal obtained by softening the metal at high temperature and applying pressure on the different metal side of the joint.

Method for joining parts of Ni-Ti alloys with different metals

Joined parts of Ni-Ti alloys with different metals and joining method

The present invention is directed to a method and apparatus for forming seam welded tubes in which the positions of cage rolls are adjusted in accordance with the thickness, substance and size of a material to be formed into a tube in a process for forming a tube blank for a seam-welded tube by using cage rolls.

Growing community of inventors

Yokohama, Japan

Masayuki Nakamura