Apparatus for moving carriages along ladders
US4637494A · kind A · utility
23Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Nov 14, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A carriage carrying a robot, a television camera, etc. is moved along a ladder having spaced ledges. The carriage has a number of gripper units moved in the direction of movement of the carriage by air cylinders or motor driven threaded rods. Each gripper unit is reciprocated toward and away from the ladder and provided with a motive device for opening and closing grippers for gripping or releasing the ledges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.