Unknown Japanese Naval Small Motor, Possibly Aircraft

[nemilitaria]

Here's an odd one, a small Japanese Naval marked motor of some type. I assume it is aircraft related. Measures 8 inches tall by 4 3/4 inches wide. Does anyone have an idea of exactly wht this is? Any help is always greatly appreciated. Thanks!

<img src=http://webpages.charter.net/ww24u/q2.jpg>
<img src=http://webpages.charter.net/ww24u/q3.jpg>
<img src=http://webpages.charter.net/ww24u/q4.jpg>
<img src=http://webpages.charter.net/ww24u/q5.jpg>
<img src=http://webpages.charter.net/ww24u/q6.jpg>
<img src=http://webpages.charter.net/ww24u/q7.jpg>

[cbuehler]

If I recall my Kanji correctly, I believe it is an air pump.

CB

[kaigunair]

yup, looks like it. very neat item! I likey very much!

[nemilitaria]

Thank you very much for the information guys. There is a wealth of knowledge on this forum.