Unattended railcar motion control system
US11148688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Jul 21, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2270/413
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and mechanism for initiating an emergency stop for an unattended railcar is disclosed. The method may include using a trip arm placed alongside the railway tracks at a designated stop point that may contact a portable trip-cock lever arm that extends out beyond the perimeter of the railcar if the railcar reaches the stop point as it moves along the track. The trip-cock lever arm may be attached to a valve that is connected to the pneumatic brake system of the unattended railcar. As the trip-cock lever arm rotates, the valve may open to release the air pressure in the pneumatic brake system causing the brakes to engage the wheels causing the railcar to stop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.