Self-aligning pump rotor and methods
AssigneeDelavan AG Pumps, Inc.
InventorDustin Featherstone
Life of this patent
Estimating the term…
Abstract
A rotary fluid device having a housing that defines a pumping chamber, a shaft disposed in the housing, and a rotor disposed in the pumping chamber and engaged with the shaft. The rotor includes a body which defines a bore that includes an oblique tapered surface. A pivot line is disposed along the tapered surface. The pivot line is a circumferential line at which the rotor pivots. A method for manufacturing a rotor includes turning an outer peripheral surface of the rotor. A bore is formed in the rotor. The bore includes an oblique tapered surface that has a pivot line disposed along the tapered surface, wherein the pivot line is a circumferential line at which the rotor pivots.
Claims29
A rotary fluid device comprising:
- a housing defining a pumping chamber;
- a shaft disposed in the housing;
- a rotor disposed in the pumping chamber of the housing and connectedly engaged with the shaft, the rotor having
- a body;
- a bore defined by the body and including an oblique tapered surface;
- and
- a pivot line disposed along the tapered surface, wherein the pivot line is a continuous circumferential edge at which the rotor pivots.
A method for manufacturing a rotor, the method comprising:
- turning an outer peripheral surface of the rotor;
- forming a bore in the rotor, the bore including an oblique tapered surface that has a pivot line disposed along the tapered surface, wherein the pivot line is a continuous circumferential edge at which the rotor pivots.
A method for assembling a rotary fluid device, the method comprising:
- installing a rotor over a shaft and into a pumping chamber of a housing, the rotor defining a bore having an oblique tapered surface with a pivot line disposed along the tapered surface, wherein the pivot line is a continuous circumferential edge;
- and
- mounting an end plate defining a center opening to the housing, wherein the end plate includes an outer race of a bearing disposed in the center opening for engaging the shaft.
A rotor comprising:
- a body;
- a bore defined by the body and including an oblique tapered surface, wherein the tapered surface of the rotor includes a first taper portion and a second taper portion that intersect;
- and
- a pivot line disposed along the tapered surface at the intersection of the first taper portion and the second taper portion, wherein the pivot line is a continuous circumferential edge at which the rotor pivots.
Dependencies are inferred from the claim text.