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US 9,751,163 B2Granted
Method for producing a pendulum of a pendulum slide cell pump
AssigneeMahle International GmbH
InventorsMarco Kirchner, André Maeder, Christian Richter
Life of this patent
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Abstract
A method for producing a pendulum of a pendulum slide cell pump may include providing a prefabricated pendulum body and performing a post-machining operation on the pendulum body only at a plurality of contact locations at which the pendulum body contacts at least one of an inner rotor and an outer rotor of the pendulum slide cell pump.
Claims20
A method for producing a pendulum of a pendulum slide cell pump, comprising:
- providing a prefabricated pendulum body;
- and
- performing a post-machining operation on the pendulum body only at a plurality of contact locations at which the pendulum body contacts at least one of an inner rotor and an outer rotor of the pendulum slide cell pump, wherein performing the post-machining operation on the pendulum body defines a friction-reducing finished surface at the plurality of contact locations and a prefabricated surface along an outer contour of the pendulum body spaced apart from the plurality of contact locations.
A pendulum for a pendulum slide cell pump, comprising:
- a prefabricated pendulum body defining an outer contour and a plurality of contact locations disposed about the outer contour at positions defining a sliding surface of the pendulum body that contacts at least one of an outer rotor and an inner rotor;
- wherein the plurality of contact locations have a post-machined finished surface, and the outer contour of the pendulum body has an unfinished surface in a region spaced away from the plurality of contact locations.
A pendulum slide cell pump, comprising:
- an outer rotor;
- an inner rotor;
- at least one pendulum connected to the outer rotor and the inner rotor, the at least one pendulum including:
- a prefabricated pendulum body defining an outer contour;
- a plurality of contact locations disposed about the outer contour, the plurality of contact locations respectively defined by a portion of the pendulum body that contacts at least one of the inner rotor and the outer rotor;
- wherein the outer contour has a friction-reducing post-machined surface only at the plurality of contact locations compared to a surface of the pendulum body disposed in a region of the outer contour spaced away from the plurality of contact locations.
3 more elements
Dependencies are inferred from the claim text.