Variable displacement rotary vane pump
AssigneeO.M.P. Officine Mazzocco Pagnoni S.R.L.
InventorsGiuseppe Lo Biundo, Angelo Pancotti
Life of this patent
Estimating the term…
Abstract
A variable displacement rotary vane pump. The pump has a pump body, a rotor with vanes that rotates inside the pump body around a rotation axis, an oscillating stator arranged in an eccentric position around the rotor, a fulcrum for the rotation of the oscillating stator with respect to the pump body, and adjusting means for adjusting the displacement of the pump. The adjusting means act on the oscillating stator to move it with respect to the rotor and the pump body. The fulcrum is integrally formed with the oscillating stator and is housed in a recess formed in the pump body. The pump has a sliding element between the fulcrum and the recess. The sliding element is at least partially free to rotate within the recess.
Claims8
A variable displacement rotary vane pump, comprising
- a pump body,
- a rotor configured to rotate inside the pump body around a rotation axis and provided with a plurality of vanes,
- an oscillating stator arranged in an eccentric position around the rotor,
- a fulcrum for the rotation of said oscillating stator with respect to the pump body, and
- adjusting means configured to adjust the displacement of the pump, the adjusting means acting on the oscillating stator to move the oscillating stator with respect to the rotor and the pump body,
- wherein
- said fulcrum is made in a single piece with said oscillating stator and is housed in a recess formed in said pump body,
- the pump comprises a sliding element interposed between said fulcrum and said recess, and
- said sliding element is at least partially free to rotate within said recess.
Dependencies are inferred from the claim text.