中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

31 records (took 0.022 seconds)

    Press-fit check valve for a hydraulic tensioner reservoir with metered backflow
    1.
    发明授权
    Press-fit check valve for a hydraulic tensioner reservoir with metered backflow 有权

    公开(公告)号：US10781892B2

    公开(公告)日：2020-09-22

    申请号：US15748700

    申请日：2016-07-25

    Applicant: BorgWarner Inc.

    Inventor： Keith B. Cobb ,  Matthew W. Crump ,  Dale N. Smith

    IPC: F16H7/08 ,  F01L1/02 ,  F16K15/04 ,  F16K27/02

    Abstract: A press-fit check valve for a hydraulic tensioner includes a retainer, a seat, a ball, and a spring. The seat of the check valve is press-fit against the wall of the check valve counterbore of the hydraulic tensioner body. In some embodiments, the seat is cup-shaped to provide a predetermined level of press force retention of the press-fit check valve. In some embodiments, the seat includes a plurality of legs separated by leg openings. In some embodiments, a backflow path is provided past the press-fit check valve by a combination of the leg openings and at least one backflow slot through a flange of the retainer. In some embodiments, a lip at the outer end of the check valve counterbore prevents the seat from backing out of the check valve counterbore.

    SEALED HYDRAULIC TENSIONER
    10.
    发明申请
    SEALED HYDRAULIC TENSIONER 审中-公开

    公开(公告)号：US20190316657A1

    公开(公告)日：2019-10-17

    申请号：US16378873

    申请日：2019-04-09

    Applicant: BorgWarner Inc.

    Inventor： Keith B. Cobb ,  Mark Patton ,  XiaoJian Lu ,  Kevin Todd ,  Dale N. Smith ,  Fabio Magni ,  Ron J. Mielbrecht ,  Glenn Swanson ,  Giuseppe Baddaria

    IPC: F16H7/08 ,  F02B67/06 ,  F02F11/00 ,  F01L1/02 ,  F01L1/047

    Abstract: A sealed hydraulic tensioner includes a cylinder having a cylinder surface formed in a housing; a piston, received by the cylinder, having an inner surface forming a piston cavity and an outer surface that closely conforms in shape to the cylinder inhibiting the flow of fluid between the outer surface of the piston and the cylinder surface; a tensioner biasing member engaging the piston and the cylinder forcing the piston in an axial direction; a check valve regulating fluid flow between a high-pressure chamber and a low-pressure chamber; one or more apertures formed in the piston extending between the inner surface and the outer surface of the piston that communicate fluid between the piston cavity and the cylinder, wherein a substantially fixed quantity of fluid is encapsulated within the piston cavity and the cylinder.

Patent Agency Ranking