Railcar cushioning device with internal spring
US6279765A · kind A · utility
12Cited by
78References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 20, 1998 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Jan 20, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61G9/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A railcar cushioning device with a gas charged cylinder and a piston contained in the cylinder for cushioning buff and draft impacts. A spring assembly is contained in the cylinder between the piston and an end of the cylinder to locate the piston in a neutral position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.