Device for adjusting the position of a track mounted car
US4435250A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1982 |
| Grant date | Mar 6, 1984 |
| Priority date | — |
| Expiry date | May 6, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61K7/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A device for adjusting the position of a track mounted car from a first position where the car is initially spotted by conventional braking means to a second predetermined position on the track which must be reached within close tolerances. An arm which may be pivoted in a vertical arc parallel to the track is pivotally attached to the car at its one end and at its other end it has preferably cone-shaped feeler means which engages a protrusion fixed adjacent to the track. A preferably vertical gravity based reference position is selected for the arm, and a sensing means for producting a direct current output signal proportional in magnitude to angular displacement of the arm from this position and corresponding in polarity to direction of displacement is provided. This signal is inputed to a control means for a dual directional, variable speed hydraulic traction drive means for the car so it will move in the direction of its predetermined final position at an instantaneous velocity which is proportional to its distance from that position. In another embodiment of this invention, a protrusion is engaged by a horizontal arm which swings in a horizontal arc and interacts with a pivoti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.