Rotary expansible chamber devices – Interengaging rotating members – Helical or herringbone
Reexamination Certificate
2007-06-19
2007-06-19
Trieu, Theresa (Department: 3748)
Rotary expansible chamber devices
Interengaging rotating members
Helical or herringbone
C418S152000, C418S206500
Reexamination Certificate
active
10524346
ABSTRACT:
A helical screw rotor compressor is provided which includes a rotor housing that includes a barrel wall between two parallel end walls, an inlet port at a first end and an outlet port at a second end. The compressor has an internal shape corresponding to two parallel and mutually intersecting cylinders. The compressor includes two rotors which each include a shaft and a rotor body surrounding the shaft. The rotor bodies have parallel end surfaces adjacent to the end walls of the rotor housing, and each include helical lobes that have a crown, a first or leading flank surface on a first side of the crown and a second or trailing flank surface on a second side of the crown. The second or trailing flank surfaces of the lobes have a beveled or chamfered region adjacent to the end surface of the rotor body near the outlet port.
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patent: WO 0128747 (2001-04-01), None
Frishauf Holtz Goodman & Chick P.C.
Svenska Rotor Maskiner AB
Trieu Theresa
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