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US 11,828,288 B2Granted
Pendulum oil pump
AssigneeMahle International GmbH
InventorsLiviu Marinica, Mihajlo Soc, Steven Fletcher, Adam Rossetto
Life of this patent
Estimating the term…
Abstract
A pendulum pump includes a housing, a cover positioned on the housing and forming a cavity therebetween, an inner rotor and an outer rotor positioned within the cavity, wherein the inner rotor is connected via a plurality of pendulums to the outer rotor, and the pendulums are mounted to the outer rotor in an articulated manner such that a rotational eccentricity can be imparted between the inner rotor and the outer rotor to control a flow rate of the pendulum pump, and a protective plate positioned within the cavity and against a surface of one of the housing and the cover.
Claims21
A pendulum pump, comprising:
- a housing having a housing inner surface area;
- a cover having a cover inner surface area and when positioned on the housing the cover inner surface directly opposes the housing inner surface, forming a cavity between the housing inner surface area and the cover inner surface area;
- an inner rotor and an outer rotor positioned within the cavity, wherein the inner rotor is connected via a plurality of pendulums to the outer rotor, and the pendulums are mounted to the outer rotor in an articulated manner such that a rotational eccentricity can be imparted between the inner rotor and the outer rotor to control a flow rate of the pendulum pump;
- and
- a protective plate positioned about a center bore of the inner rotor and within the cavity and against one of the housing inner surface area and the cover inner surface area, the protective plate having a protective plate area that is a size of at least a portion of one of the housing inner surface area and the cover inner surface area, the protective plate having a first edge that includes two cuttout regions, the protective plate having a second edge opposite the first edge, the second edge having two cuttout regions, the first edge and its two cuttout regions in contact with a first portion of the housing or cover, and the second edge and its two cuttout regions in contact with a second portion of the same housing or cover that the first edge is in contact with.
2 more elements
A method of fabricating a pendulum pump, comprising:
- positioning a cover on a housing, the cover having a cover inner surface area and the housing having a housing inner surface area, and such that the cover inner surface directly opposes the housing inner surface;
- forming a cavity between the cover inner surface area and the housing inner surface area;
- positioning an inner rotor and an outer rotor within the cavity;
- connecting the inner rotor to the outer rotor via a plurality of pendulums;
- mounting the pendulums to the outer rotor in an articulated manner such that a rotational eccentricity can be imparted between the inner rotor and the outer rotor to control a flow rate of the pendulum pump;
- and
- positioning a protective plate about a center bore of the inner rotor and within the cavity and against one of the housing inner surface area and the cover inner surface area, the protective plate having a protective plate area that is a size of at least a portion of one of the housing inner surface area and the cover inner surface area, the protective plate having a first edge that includes two cuttout regions, the protective plate having a second edge opposite the first edge, the second edge having two cuttout regions, the first edge and its two cuttout regions in contact with a first portion of the housing or cover, and the second edge and its two cuttout regions in contact with a second portion of the same housing or cover that the first edge is in contact with.
4 more elements
A method of refurbishing a pendulum pump, comprising:
- disassembling a cover, a housing, an inner rotor, an outer rotor, and a plurality of pendulums of a pendulum pump, the cover having a cover inner surface area and the housing having a housing inner surface area;
- positioning the cover on the housing such that the cover inner surface directly opposes the housing inner surface, forming a cavity between the cover inner surface area and the housing inner surface area;
- positioning the inner rotor and the outer rotor within the cavity;
- connecting the inner rotor to the outer rotor via the plurality of pendulums;
- mounting the pendulums to the outer rotor in an articulated manner such that a rotational eccentricity can be imparted between the inner rotor and the outer rotor to control a flow rate of the pendulum pump;
- and
- positioning a protective plate within the cavity and against one of the housing inner surface area and the cover inner surface area, the protective plate having a protective plate area that is a size of at least a portion of one of the housing inner surface area and the cover inner surface area, the protective plate having a first edge that includes two cuttout regions, the protective plate having a second edge opposite the first edge, the second edge having two cuttout regions, the first edge and its two cuttout regions in contact with a first portion of the housing or cover, and the second edge and its two cuttout regions in contact with a second portion of the same housing or cover that the first edge is in contact with.
4 more elements
Dependencies are inferred from the claim text.