Dual-plate swash pump
AssigneeSwashpump Technologies Limited
InventorsLindsay Dalziel, Lan Le Noc
Life of this patent
Estimating the term…
Abstract
A swash-plate machine for pumping fluids uses dual swash plates in complementary or mirror-image orientation. The vibration that is generated as a reaction to forced nutatory motion imposed on a single swash plate is thereby largely cancelled. Rotated orientation of the divider plate position in one chamber with respect to the other (preferably 90 degrees difference) provides four outputs per revolution instead of the two available from both sides of a single swash plate. Improved bearings for the part-spherical swash plate base permits only oscillatory movement for that part and facilitate better sealing.
Claims7
1-12. (canceled)
A dual swashplate pump having a body including two pumping chambers each holding a nutatable swash plate;
- each swash plate being attached along a common, shared, shaped drive shaft such that when in use each swash plate is caused to nutate in a direction opposite to that of the other swash plate, so that a tendency for vibratory motion of the pump body arising from a reaction to the nutation of either one swash plate is partially cancelled by opposite movement of the other swash plate;
- each swash plate being transected though a notch by a fixed divider plate that crosses the chamber and is sealed against the swash plate by means of a trunnion;
- characterised in that the divider plate along with the associated port or ports of the first pumping chamber is fixed at a controlled angle or phase around the rotatable shaft in relation to the position of the divider plate and the associated port or ports of the second pumping chamber;
- the angle being between 75 and 105 degrees.
Dependencies are inferred from the claim text.