- 专利标题: RAILROAD CAR TRUCK DAMPER WEDGE FITTINGS
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申请号: US17887668申请日: 2022-08-15
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公开(公告)号: US20220388550A1公开(公告)日: 2022-12-08
- 发明人: Jamal Hematian
- 申请人: NATIONAL STEEL CAR LIMITED
- 申请人地址: CA Hamilton
- 专利权人: NATIONAL STEEL CAR LIMITED
- 当前专利权人: NATIONAL STEEL CAR LIMITED
- 当前专利权人地址: CA Hamilton
- 主分类号: B61F5/12
- IPC分类号: B61F5/12 ; B61F5/06
摘要:
A damper wedge for a railroad car truck includes a friction member that rides on the wear plate of the side frame column of the railroad car truck and a non-metallic wear surface; and a spring seat that, in use, engages a spring of the railroad car truck. The inclined damper wedge surface has a primary angle alpha, and a secondary angle beta. The spring seat has an axial centerline. The inclined damper wedge surface has a curvature. The curvature has a working point. The damper wedge has a datum plane that is normal to the non-metallic wear surface and that contains the axial centerline. The axial centerline meets the inclined damper wedge surface at an intersection point that is the center of a contact patch. The working point is located in a central region of the contact patch, or working surface patch, downslope of the intersection point.
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