Forklift variable reach mechanism
US4674944A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/13
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mechanism for use on a boom-type vehicle includes load lifting forks carried by a low profile twist-resistant carriage which is one link in a low profile parallelogram linkage attached to a fly section of the boom and maintained level in all positions of the boom by a slave cylinder connected between the boom and a slave link which constitutes a member of the parallelogram linkage. The mechanism can be adjusted to many positions while automatically maintaining the relative position of the forks with respect to the vehicle frame for any boom angle. The mechanism can be adjusted to provide a long reach over or under obstructions in order to remove or place a load. It may also engage loads below ground level. Load pick-up or placement can be performed in confined areas which are unreachable by conventional forklift trucks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.