Coupler draft gear, double-side operating coupler and lower lockpin rotation shaft assembly
US8469211B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 22, 2009 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Jul 10, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61G7/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A lower lockpin rotation shaft assembly includes a lower lockpin rotation shaft body, an outer end portion thereof having a first coupler lifting bar hole, an intermediate portion thereof having a connecting key; and a lower lockpin rotation shaft bush, an outer end portion of the lower lockpin rotation shaft bush having a second coupler lifting bar hole, and an inner end portion of the lower lockpin rotation shaft bush being operatively connected to an inner end portion of the lower lockpin rotation shaft body. Further, the present invention further provides a double-side operating coupler and a coupler draft gear having the above lower lockpin rotation shaft assembly. The coupler draft gear further includes two coupler lifting bars and two coupler lifting bar seats. Each of the coupler lifting bars is inserted in a keyhole-shaped through hole of corresponding coupler lifting bar seat, and the coupler lifting bar has a restrained segment at a fitted portion of the coupler lifting bar with the coupler lifting bar seat. Coupler heads of the two coupler lifting bar are inserted through the keyhole-shaped through holes of the two coupler lifting bar seats and then coupled with the fir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.