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1. 发明授权

US4953727A Piston and shaft assembly of railroad end-of-car cushioning devices and method of repairing same 失效
标题翻译：铁路终端缓冲装置的活塞和轴组件及其修理方法
公开(公告)号：US4953727A
公开(公告)日：1990-09-04
申请号：US374954
申请日：1989-07-03
申请人： Howard E. Tonn , Robert Davidson , David B. Shultz , Keith R. Miller
发明人： Howard E. Tonn , Robert Davidson , David B. Shultz , Keith R. Miller
IPC分类号： B61G9/08
CPC分类号： B61G9/08
摘要： This invention concerns an end-of-car hydraulic cushioning device for use on rail cars and a method of repairing such devices. The cushioning device has a piston and shaft assembly which is subject to train action forces. The piston and shaft are connected by means of a threaded engagement which prevents relative axial movements between the two parts. Rotational movement of the piston on the shaft is prevented by a hardened steel pin disposed in aligned, radial holes formed in the piston and shaft. The pin and holes are sized to provide clearance between the piston and pin. This permits piston metal deformation to occur during high speed impacts without catastrophically stressing the steel pin. A filler rod retains the pin in the radial holes.
摘要翻译：本发明涉及一种用于轨道车辆的汽车终端液压缓冲装置和修理这种装置的方法。缓冲装置具有经受列车作用力的活塞和轴组件。活塞和轴通过螺纹接合连接，防止两部分之间的相对轴向移动。通过设置在形成于活塞和轴中的排列的径向孔中的硬化钢销来防止活塞在轴上的旋转运动。销和孔的尺寸设置成在活塞和销之间提供间隙。这样可以在高速冲击时发生活塞金属变形，而不会对钢销造成灾难性的压力。填充杆将销保持在径向孔中。

2. 发明授权

US4782740A Piston and shaft assembly for an end-of-car cushioning unit 失效
标题翻译：用于汽车尾气缓冲单元的活塞和轴组件
公开(公告)号：US4782740A
公开(公告)日：1988-11-08
申请号：US74627
申请日：1987-07-17
申请人： Donald R. Fagin , Howard E. Tonn , Clebern W. Sigley
发明人： Donald R. Fagin , Howard E. Tonn , Clebern W. Sigley
IPC分类号： B23P6/00 , F16J1/12 , B23P11/02 , F16J1/00
CPC分类号： B23P6/02 , F16J1/12 , Y10T29/49721 , Y10T29/4973 , Y10T29/49821 , Y10T29/49822
摘要： A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are removed from the cushioning device. The old shaft is substantially removed from the piston. The piston's true center is found, and a bore is cut through it. The bore is threaded, and an angled chamfer is cut in one end of the bore. A new shaft is provided with a threaded portion, the threads being adapted to mate with the threads of the bore. The shaft also has an angled chamfer adapted to mate with the bore's chamfer. The new shaft is connected to the old piston so that the threads engage and the chamfers abut.
摘要翻译：公开了一种修复铁路车辆的汽车终点缓冲装置的方法。缓冲装置是具有连接到活塞的活塞和轴的类型。在这种装置中，轴可能会磨损而损坏。在所公开的修理方法中，旧的活塞和轴从缓冲装置移除。旧轴基本上从活塞上移除。发现活塞的真实中心，并通过它切割孔。孔是螺纹的，并且在孔的一端中切割成角度的倒角。新的轴设置有螺纹部分，所述螺纹适于与孔的螺纹配合。轴还具有适合与孔倒角配合的倾斜倒角。新轴连接到旧活塞，使得螺纹接合并且倒角抵接。

3. 发明授权

US4719686A Method for repairing a piston and shaft assembly 失效
标题翻译：修理活塞和轴组件的方法
公开(公告)号：US4719686A
公开(公告)日：1988-01-19
申请号：US867761
申请日：1986-05-28
申请人： Donald R. Fagin , Howard E. Tonn , Clebern W. Sigley
发明人： Donald R. Fagin , Howard E. Tonn , Clebern W. Sigley
IPC分类号： B23P6/00 , F16J1/12
CPC分类号： B23P6/02 , F16J1/12 , Y10T29/49721 , Y10T29/4973 , Y10T29/49821 , Y10T29/49822
摘要： A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are removed from the cushioning device. The old shaft is substantially removed from the piston. The piston's true center is found, and a bore is cut through it. The bore is threaded, and an angled chamfer is cut in one end of the bore. A new shaft is provided with a threaded portion, the threads being adapted to mate with the threads of the bore. The shaft also has an angled chamfer adapted to mate with the bore's chamfer. The new shaft is connected to the old piston so that the threads engage and the chamfers abut.
摘要翻译：公开了一种修复铁路车辆的汽车终点缓冲装置的方法。缓冲装置是具有连接到活塞的活塞和轴的类型。在这种装置中，轴可能会磨损而损坏。在所公开的修理方法中，旧的活塞和轴从缓冲装置移除。旧轴基本上从活塞上移除。发现活塞的真实中心，并通过它切割孔。孔是螺纹的，并且在孔的一端中切割成角度的倒角。新的轴设置有螺纹部分，所述螺纹适于与孔的螺纹配合。轴还具有适合与孔倒角配合的倾斜倒角。新轴连接到旧活塞，使得螺纹接合并且倒角抵接。

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