Hoisting mechanism for spreader with automatic attitude control means
US4119230A · kind A · utility
1Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Oct 25, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C19/007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A straddle carrier having a generally U-shaped frame with a spreader supported in the opening of the U-shaped frame is disclosed herein. The spreader is raised and lowered by two fluid rams which respectively cooperate with opposite ends thereof and hydraulic fluid is supplied to the fluid rams by a hydraulic circuit that includes an electrical circuit which automatically prevents the spreader from tilting beyond a maximum angular attitude with respect to a horizontal reference plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.