A certain Mr. Lau Foo Wah directed me to a very interesting site http://www.chlvalve.com.hk
Here you can see in more detail than on my page the results in text, pics, animation and video of a Chinese (Hong Kong) desmo-project.
WO patentapplication nr. WO02057601 (Chinese text) European Patent Application nr. EP 1353043A1 (Filed 09.10.2001, published 15.10.2003)(English text)
[Classification = Group 7B]