Koa Oil Company, Limited

Okiyoshi Okamura

Yoshihito Tamanoi

Kazuaki Nakaura

Masayuki Wakasa

Mitsunori Yoshimura

Katsuma Sakai

Air cell

An air cell having a single cell or a plurality of cells being aggregated is disclosed, that comprises a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode and composed of a water absorbing material that absorbs and holds an electrolytic solution, an electrolytic solution supply member protrusively disposed at a lower edge of the positive electrode and the negative electrode and adapted for supplying the electrolytic solution to the separator, a spacer for covering an outer surface of the positive electrode and the negative electrode and forming an air layer on the front surface thereof, and a cover member for covering surfaces of the electrolytic solution supply member, the cover member having a blank portion that is at least a minimum opening portion for supplying the electrolytic solution to the electrolytic solution supply member.

Apparatus for and a method of detecting and measuring the presence and degree of corrosion damage in pipe by using a probe which forms a capacitor with the wall of the pipe is disclosed. The probe is moved interior to and longitudinally of the pipe, and the variation in capacitance occuring whenever the probe passes a corrosion portion of the interior pipe wall is detected.

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Waki, Japan

Okiyoshi Okamura