Rotary expansible chamber devices – Non-radially positioned sliding vane or abutment
Patent
1981-09-14
1983-08-09
Smith, Leonard E.
Rotary expansible chamber devices
Non-radially positioned sliding vane or abutment
418259, F01C 100, F03C 200
Patent
active
043976212
ABSTRACT:
A vane for a hydraulic vane pump, with the vane being adapted to be inserted, with sliding movement, into a guide slot provided in a rotor so as to be symmetrical and parallel to a central plane of the slot. The plane forms a setting angle at an outer jacket of the rotor together with an axial plane containing the rotor axis so that an opening of the slot located at the outer jacket of the rotor leads the bottom of the slot in a direction of rotation. A convex sliding sealing surface cooperates with inner jacket of the stator and a pressure surface is located in the plane directed toward a bottom of the slot. A crown of the sliding sealing surface is displaced, with respect to the principle plane of the vane, in a direction opposite the rotational direction of the rotor. The sliding sealing surface forms, in a direction of rotation of the rotor, a wedge-shaped transistional area located at a plane which forms a complimentary angle combined with an addendum angle to the principle plane of the vane. The pressure surface forms, with the principle plane of the vane, a complimentary angle and, when combined with a re-setting angle, forms a 90.degree. angle. The angle formed by the pressure surface is such that a pressure which results at the pressure surface includes a balancing pressure component which is directed approximately at right angles to the principle plane of the vane and approximately in a direction opposite to the rotational direction of the rotor.
REFERENCES:
patent: 2949081 (1960-08-01), Deschamps
Frank Jurgen
Pickard Jurgen
Daimler-Benz Aktiengesellschaft
Obee Jane E.
Smith Leonard E.
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