Oetiker clamp installation instructions: http://www.oetiker.com/uploads/docu...Instructions_2006_07_english_0890xxxx_770.pdf
Those quotes refer to spring clamps, not these. They don't look like they would provide spring-loaded tension after setting.Oh, I see it's answered here:
http://www.garagejournal.com/forum/showpost.php?p=230443&postcount=31
with a rejoinder here:
http://www.garagejournal.com/forum/showpost.php?p=230459&postcount=34
Those quotes refer to spring clamps, not these. They don't look like they would provide spring-loaded tension after setting.

Maybe it was a swiss dude living in Germany. Oetiker is German all the way.

Ah, the "authority" of internet message boards![]()
Looks like indeed they are Swiss.
http://www.oetiker.com/content.asp?l=4&idNavig=79
And there sales projections at their corporate website are all in Swiss Francs.