Tokyo Denpa Co., Ltd.

Tokyo Denpa Kabushiki Kaisha

Agency of Industrial Science and Technology

Meisei Electric Co., Ltd.

Ministry of International Trade

Kabushiki Kaisha Goto Seisakusho

Kabushiki Kaisha Goto Seisakusko

Sumiyuki Ishigami

Mitsuru Sato

Koichi Tsukamoto

Futoshi Uchiyama

Ko Agatsuma

Takeshi Ohara

Hisashi Sugimoto

Kaoru Furusawa

A temperature measurement device is provided with a temperature sensing element which contains a quartz resonator having a quartz oscillating crystal whose ratio of width to thickness is in the range of 9.48 to 9.69, and an antenna which receives stimulus for the quartz oscillating crystal and transmits waves of reverberatory oscillation. The temperature measurement device is capable of measuring temperatures in the range of normal room temperature to extremely low temperatures (4.degree. K.).

Temperature measurement device

A quartz unit is arranged to permit its automatic manufacture. The quartz unit includes a quartz vibrator; a pair of opposed terminal metal fittings each consisting of a stem part, branch parts protruding from one end of the stem part on two sides thereof to form a Y shape and support parts protruding from the fore ends of the branch parts to carry jointly the quartz vibrator; electrodes of the quartz vibrator connected to the terminal metal fittings through the support parts; and a container consisting of front and rear halves which are joined together to effect sealing with the metal fittings interposed in between them. The stem, branch and support parts are obtained by punching from a metal plate in one unified body.

Quartz unit

A quartz unit is arranged to permit its automatic manufacture of it. The quartz unit includes a quartz vibrator; a pair of opposed terminal metal fittings each consisting of a stem part, branch parts protruding from one end of the stem part on two sides thereof to form a Y shape and support parts protruding from the fore ends of the branch parts to carry jointly the quartz vibrator; electrodes of the quartz vibrator connected to the terminal metal fittings through the support parts; and a container consisting of front and rear halves which are joined together to effect sealing with the metal fittings interposed in between them. The stem, branch and support parts are obtained by punching from a metal plate in one unified body.

Y-Shaped support for piezoelectric resonator

A vibrating quartz accelerometer of moving object under test, wherein both ends of at least two vibrating quartz resonators are rigidly coupled each other so as to confront their faces each other and to form gap between said resonators, one end of which is made as a fixed end to said moving object and another end thereof is made as a free end to said moving object, a weight is provided on said free end, and when said moving object is put into motion, inertia force, which acts on said weight in the direction for keeping original state of motion or state of standstill relative to said motion, is converted into beat frequency in resonant frequency of said two vibrating quartz resonators, which beat frequency is caught to detect acceleration of said moving object.

Vibrating quartz accelerometer

Growing community of inventors

Tokyo, Japan

Sumiyuki Ishigami