Trailer coupling determination apparatus and trailer coupling determination method
US9650030B2 · kind B2 · utility
11Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 2015 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Aug 3, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
When a brake of a tractor is released, a control unit having a computer built therein monitors the pressure of working fluid output from a trailer control valve that controls a brake of the trailer in conjunction with the brake of the tractor. When time required for a pressure of the working fluid to decrease to a predetermined pressure is a predetermined time or longer, the control unit determines that the trailer is coupled with the tractor. When the time is less than the predetermined time, the control unit determines that the trailer is not coupled with the tractor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.