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Title:
ROTARY POSITIVE DISPLACEMENT MACHINE
Document Type and Number:
WIPO Patent Application WO2003062604
Kind Code:
A3
Abstract:
A casing (1) of a rotary positive displacement machine with a circular cylindrical internal surface (3) delimits an operating chamber. A rotor (4) orbits about the axis of the internal surface (3). The rotor (4) has a circular cylindrical external surface (11), a generatrix of which is adjacent to the internal surface (3), a diametrically opposite genetrix being spaced from the internal surface (3). A vane member (17), mounted on the casing (1) and pivotable about a pivot axis parallel to the chamber axis, is accommodated in a fluid inlet/outlet aperture (18) in the casing, the vane member having a passageway (17a) communicating between the exterior of the casing and the operating chamber. The vane member (17) has an arcuate face (17b) coaxial with the pivot axis, end faces (17c) extending from respective lateral ends of the arcuate face (17b) towards the pivot axis, and a tip face (17g) adjacent the rotor (4), these faces (17b, 17c, 17g) being sealing faces with respect to corresponding surfaces of the aperture (18) and the rotor (4). A linkage (28) connects the vane member (17) to the rotor, the linkage being connected to the vane member by an articulation having an articulation axis (30) such that a plane containing the articulation axis (30) and the axis of the external surface (11) passes through the region of sealing contact.

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Inventors:
DRIVER RONALD W (GB)
Application Number:
PCT/GB2003/000194
Publication Date:
November 27, 2003
Filing Date:
January 17, 2003
Export Citation:
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Assignee:
EA TECHNICAL SERVICES LTD (GB)
DRIVER RONALD W (GB)
International Classes:
F01C1/39; F01C1/46; F01C11/00; F01C19/00; F01C19/08; F01C20/02; F01C20/12; F01C20/14; F01C20/16; F01C21/00; F01C21/08; (IPC1-7): F01C1/46; F01C1/39; F01C11/00; F01C19/00; F01C19/08; F01C21/00; F01C21/08; F01C21/16
Domestic Patent References:
WO1994000680A11994-01-06
WO2001020167A12001-03-22
WO1992009800A11992-06-11
Foreign References:
US3081707A1963-03-19
DE77480C
CH334058A1958-11-15
US3895609A1975-07-22
DE488069C1929-12-24
US1584824A1926-05-18
US6226986B12001-05-08
US4831827A1989-05-23
US3303790A1967-02-14
US3896772A1975-07-29
BE773897Q1972-01-31
FR510945A1920-12-14
GB1289473A1972-09-20
GB1085542A1967-10-04
CH657665A51986-09-15
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