Nec Corporation

Katoh Electrical Machinery Company, Ltd.

Sanwa Shutter Corporation

Yoshihiro Ohtsuka

Michio Nagai

Atsushi Matsumura

Mitsuhiro Yoshida

Yasunori Kobayashi

Noriaki Tokuyama

Tomoyuki Kinoshita

Masato Hirao

Masaaki Munekata

Hisaya Tagata

The invention provides an opening and closing device for a portable telephone wherein a receiver section can be opened by one touch by depressing a push-button while holding the portable telephone with one hand and can be stopped freely at any angle from a predetermined opening angle and besides, also when the receiver section is in a closed condition, the closed condition of the receiver section can be kept stably.

Opening and closing device for a portable telephone

A pair of links hangingly support a bearing plate that secures a winding shaft of a shutter curtain. The links are arranged so that the dimension of the space accommodating the links can be minimized. A first link pivots at one end to an end of the bearing plate, adjacent to a shutter guide, and swings at the base end to a side wall of the shutter case so as to project upward away from the shutter guide. A second link pivots at one end to the other end of the bearing plate, away from the shutter guide, and swings at the base end to a portion of the side wall of the shutter case so that the second link extends under the winding shaft toward the shutter guide to bypass the winding shaft. Thus, both the first and second links can be accommodated within the diameter of the winding wheel.

Device for moving a winding shaft in a building shutter

Growing community of inventors

Tokyo, Japan

Yoshihiro Ohtsuka