US Patent No: 5,301,615
Number of patents in Portfolio can not be more than 2000
Railcar moving vehicle having monitored weight transfer process including sensors for sensing transfer of full weight
Stats
-
Apr 12, 1994
Issued date -
Apr 19, 1993
filing date -
08/049,822
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
A railcar moving vehicle having a hydraulic system for raising the vehicle coupler while coupled to a railroad car or the like to transfer weight from the railcar to the vehicle. By this invention, fluid pressure in the hydraulic power line is sensed, to monitor an increase in the fluid pressure as the hydraulic system raises the vehicle coupler while coupled to a railcar. Then, when a substantial termination of the increase in fluid pressure is sensed as the hydraulic coupler is raised, an indicator signals the occurrence of this event, typically by automatically terminating the hydraulic raising of the vehicle coupler. Thus, weight may be transferred without overraising the railcar, without the need for estimating the weight of the railcar prior to the weight transfer process.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,380,198 Vehicle having improved coupling system and system for absorption of shock on coupling | 5 | 1980 | |
| 4,497,257 Retractable wheeled vehicle | 13 | 1981 | |
| 4,537,137 Combination railcar moving vehicle and trailer spotter | 15 | 1982 | |
|
|
|||
| 4,878,436 Railcar moving vehicle | 3 | 1988 | |