Invention Grant
- Patent Title: Hydraulic motor with anti-cogging features
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Application No.: US17076902Application Date: 2020-10-22
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Publication No.: US11493018B2Publication Date: 2022-11-08
- Inventor: Kyle J. Merrill , Andrea Vacca , Venkata Harish Babu Manne , Matteo Pellegri
- Applicant: Parker-Hannifin Corporation
- Applicant Address: US OH Cleveland
- Assignee: Parker-Hannifin Corporation
- Current Assignee: Parker-Hannifin Corporation
- Current Assignee Address: US OH Cleveland
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Main IPC: F03C2/08
- IPC: F03C2/08 ; F04C2/10 ; F04C15/00

Abstract:
An example hydraulic motor comprises: a stator comprising (i) a stator body having plurality of roller pockets, wherein the stator body comprises a plurality of grooves that are longitudinally-extending, and (ii) a plurality of rollers disposed respectively in the plurality of roller pockets; a rotor having a plurality of external teeth configured to engage with the plurality of rollers of the stator, such that the plurality of rollers and the plurality of external teeth define fluid chambers therebetween configured to expand and contract as the rotor rotates within the stator; and an anti-cogging passage configured to provide pressurized fluid from at least one of the fluid chambers to at least one groove of the plurality of grooves of the stator body, such that pressurized fluid provided to the at least one groove applies a radially-inward force on a respective roller toward the rotor.
Public/Granted literature
- US20210207599A1 Hydraulic Motor with Anti-Cogging Features Public/Granted day:2021-07-08
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