Sliding vane pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
May 24, 1988
Grant Date -
N/A
app pub date -
Feb 19, 1987
filing date -
Feb 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sliding vane pump having a hydraulic vane actuation system. The pump includes a case with a liner having an eccentric surface therein. A rotor and shaft rotate within the liner. The rotor has a plurality of radial slots therein, with a vane slidably disposed in each of the slots. Each vane has a radially inner edge with first and second sides extending substantially normally therefrom. A radially outer edge extends normally from the first side and is opposite and substantially parallel to the radially inner edge. A beveled edge extends radially inwardly from the outer edge and interconnects the outer edge with the second side. As the rotor rotates, the beveled edge is the leading edge of the vane. A plurality of radially oriented holes are defined through each vane. The holes intersect the inner edge and a portion of the beveled edge and a portion of the outer edge. Fluid travels radially inwardly and outwardly through the holes in the vanes as the rotor rotates, providing hydraulic actuation of the vanes outwardly, as well as providing fluid relief therefor.
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