Iwatsu Electric Company Ltd.

Nippon Telegraph and Telephone Public Corporation

Iwasaki Tsushinki Kabushiki Kaisha

Satoru Tsukiyama

Masakazu Tsukamoto

Tsuneji Kimeda

Osamu Hara

Masayuki Murakami

Tadashi Kodama

Tadahiko Matsuoka

Telephone unit

Mobile telephone unit

A rotary telephone dial, in which at least one shaft is fixedly planted on a base plate. A rotary member is rotatably mounted on the shaft. Another base plate is engaged with the free end of the shaft to support the shaft. One direction assembling can be performed as a result of the above structure. A finger moving compensation mechanism is provided to obtain a sufficent allowable range of finger moving. The spring retaining structure and the governor mechanism are improved to effectively reduce the number of parts and to realize simplification of the manufacturing process.

Rotary telephone dial

Growing community of inventors

Tokyo, Japan

Satoru Tsukiyama