Directional control system for a gantry type crane
US5180070A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | May 30, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C19/007
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A directional control system for a gantry type cane operable in either a longitudinal direction or a transverse direction is disclosed. The gantry type crane has first and second, spaced front wheels and first and second, spaced rear wheels. The first front wheel and the first rear wheel are on one longitudinal side of the crane, and the second front wheel and the second rear wheel are on the other longitudinal side of the crane. The control system cooperatively rotates the first and second front wheels for controlling the direction of travel of the crane in the longitudinal direction, and cooperatively rotates the first front wheel and the first rear wheel for controlling the direction of travel of the crane in the transverse direction. Thus the wheels positioned perpendicular to the direction of travel provide the steering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.