公开(公告)号：US12196325B2

公开(公告)日：2025-01-14

申请号：US18275050

申请日：2022-01-25

Applicant: TPR Co., Ltd.

Inventor： Takashi Ozawa ,  Akira Hikone ,  Takashi Oguro

IPC: F16J9/20

Abstract: An outer peripheral surface of a compression ring includes a barrel curved surface, in a case where a width of the outer peripheral surface in an axial direction of the compression ring is set as L1, a condition of 0.2 mm≤½×L1 is satisfied, and in a case where a distance in a radial direction of the compression ring between an outer peripheral peak and each of two points on the barrel curved surface separate from the outer peripheral peak by 0.1 mm in the axial direction of the compression ring is set as d1, and a distance in the radial direction of the compression ring between the outer peripheral peak and each of two points on the barrel curved surface separate from the outer peripheral peak by ¼×L1 in the axial direction of the compression ring is set as d2, a condition of d1

公开(公告)号：US12173799B2

公开(公告)日：2024-12-24

申请号：US18548166

申请日：2022-03-08

Applicant: TPR CO., LTD.

Inventor： Akira Hikone ,  Takashi Oguro ,  Noriaki Ayuzawa ,  Toshihiro Yamaoka ,  Naoki Umeda

IPC: F16J9/20 ,  F16J9/06

Abstract: An oil control ring comprises: an oil ring having a pair of land parts arranged in a sliding direction and connected to each other by a web part; and a coil expander that biases the oil ring toward the outer circumferential side in the radial direction. The web part of the oil ring is provided with a plurality of window holes. In the axial cross-sectional view of the largest opening portion of the window hole in the axial direction of the oil ring, a width H1 in the sliding direction of the oil ring and a length L1 of a combustion chamber-side non-window hole part, which excludes the window hole, in the outer circumferential surface of the web part, satisfy the condition of 0.15>L1/H1≥0.

公开(公告)号：US20240110625A1

公开(公告)日：2024-04-04

申请号：US18275050

申请日：2022-01-25

Applicant: TPR Co., Ltd.

Inventor： Takashi Ozawa ,  Akira Hikone ,  Takashi Oguro

IPC: F16J9/20

CPC classification number: F16J9/20

Abstract: An outer peripheral surface of a compression ring includes a barrel curved surface, in a case where a width of the outer peripheral surface in an axial direction of the compression ring is set as L1, a condition of 0.2 mm ½×L1 is satisfied, and in a case where a distance in a radial direction of the compression ring between an outer peripheral peak and each of two points on the barrel curved surface separate from the outer peripheral peak by 0.1 mm in the axial direction of the compression ring is set as d1, and a distance in the radial direction of the compression ring between the outer peripheral peak and each of two points on the barrel curved surface separate from the outer peripheral peak by ¼×L1 in the axial direction of the compression ring is set as d2, a condition of d1