Wolfhart Principle from 1986
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Video Source: www.youtube.com/watch?v=szEspW8YbnM
This Wolfhart Principle from 1986, a rigid vane displacement principle, has 3 massive vanes rotating in a slanted groove sealed by 3 sealing parts (one part is removed to see the groove, where the working chambers are.) • http://www.wolfhartindustries.com/
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