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    DRIVE SHAFT WITH NON-CYLINDRICAL SHAPE AND SPACED REINFORCEMENTS
    1.
    发明公开
    DRIVE SHAFT WITH NON-CYLINDRICAL SHAPE AND SPACED REINFORCEMENTS 审中-公开

    公开(公告)号：US20240060527A1

    公开(公告)日：2024-02-22

    申请号：US17892268

    申请日：2022-08-22

    申请人： Hamilton Sundstrand Corporation

    发明人： Mark R. Gurvich ,  Brayton Reed ,  Joyel Schaefer ,  Michael J. King

    IPC分类号： F16C3/02

    CPC分类号： F16C3/026 ,  F16C2208/02 ,  F16C2326/43 ,  F16C2326/06

    摘要： A drive shaft body has an axial cross-sectional shape, which includes a plurality of undulations increasing a drive shaft body diameter through an infinite number of diameters across at least 15% of an axial length between axial ends. There is at least one reinforcing belt associated with adjacent ones of the plurality of undulations. In another drive shaft, a drive shaft body has an axial cross-sectional shape which includes undulations increasing a drive shaft body diameter through an infinite number of diameters across at least 15% of an axial length between the axial ends. The undulations extend along a non-zero angle relative to a circumferential direction defined relative to a drive axis of the drive shaft, such that the undulations form a spiral with an intermediate smaller diameter spiral portion. There is at least one reinforcing belt associated with at least one of the undulations and the intermediate portion.

    Synthetic Resin Retainer for Large Thrust Ball Bearings with Dry- and Wet-lubricant Management Systems
    7.
    发明申请
    Synthetic Resin Retainer for Large Thrust Ball Bearings with Dry- and Wet-lubricant Management Systems 审中-公开

    公开(公告)号：US20170370406A1

    公开(公告)日：2017-12-28

    申请号：US15193077

    申请日：2016-06-26

    申请人： ATEC Corporation

    发明人： Anh Tran

    IPC分类号： F16C19/10 ,  F16C33/38 ,  F16C33/66

    CPC分类号： F16C19/10 ,  F16C33/3806 ,  F16C33/3818 ,  F16C33/3887 ,  F16C33/445 ,  F16C33/6622 ,  F16C33/6651 ,  F16C33/6659 ,  F16C33/6688 ,  F16C33/6696 ,  F16C2208/02 ,  F16C2208/04 ,  F16C2208/32 ,  F16C2223/70 ,  F16C2300/14 ,  Y02T10/865

    摘要： A thrust ball bearing retainer a large size of bearings with the bearing raceways being modified using a surface enhancement process such as hard anodizing coating, which provides low friction coefficient and initial wear rate. The retainer material is selected to be molded, synthetic resin, self-lubricated material reinforced with carbon fiber, molybdenum disulfide, and PTPE. This lubrication system eliminates the thermal induced bearing torque effect due to viscosity. The retainer contains multiply segments with an inner race guided configuration, an alternative ball pocket cross section design and a ball pocket slotted configuration (1) to reduce the thermal induced effects due to coefficient of thermal expansion mismatch between the raceway and the retainer material (2) to enhance the producibility of the retainer due to out-of-round, out-of-flatness and torsional wrap, and (3) to reduce the manufacturing cost. The pocket design with an oval cross section instead of a circular cross section also reduces the localized thermal induced effect which would otherwise result in a pinching condition between the ball and the retainer. The alternative slotted retainer pocket design is used to increase the compliance between ball/pocket interfaces, which helps to reduce the dynamic induced effects. The ends of the retainer segments are designed to reduce the interactive transferring, circumferential force between two adjacent segments.