Pneumatic vane motor with by-pass means

Details Pneumatic vane motor with by-pass means Pneumatic vane motor with by-pass means

2005-06-09

2010-10-12

Denion, Thomas E (Department: 3748)

Rotary expansible chamber devices

With mechanical sealing

C418S133000, C418S180000, C418S270000

Reexamination Certificate

active

07811070

ABSTRACT:
A pneumatic vane motor with a stator cylinder having an air inlet opening and an air outlet opening, a rotor eccentrically journalled in the cylinder and carrying a number of sliding vanes which divide the cylinder into moving cells, wherein the cylinder comprises a by-pass passage located between the air inlet opening and the air outlet opening and arranged to leak air from a pressurized working cell into a preceding cell before the working cell reaches the outlet opening, thereby using a preceding cell as an expansion volume for sound attenuation.

REFERENCES:
patent: 3426648 (1969-02-01), Fehlings
patent: 3835934 (1974-09-01), Schoeps et al.
patent: 3923429 (1975-12-01), Schaedler et al.
patent: 5769617 (1998-06-01), Glen
patent: 6068461 (2000-05-01), Haga et al.
patent: 2004/0086374 (2004-05-01), Elsmark et al.
patent: 2004/0197218 (2004-10-01), Wu et al.
patent: 7-259503 (1995-10-01), None

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