Lifting apparatus with compensation means
US7878347B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2008 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Dec 12, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present disclosure relates to a lifting assembly such as a jib crane or similar apparatus having an articulated arm assembly and a flexible means for connecting a load to an actuator. The lift arm assembly forms an articulated cantilever boom, which is extensible so as to traverse a suspended load within a work cell area. The lift arm assembly further includes a first and second member pivotally connected to one another whereby an inclined plane (e.g., a cam) at the pivot point of the articulating arms provides a vertical displacement of the secondary arms thereby moving the distal end of the secondary arm to counterbalance inherent forces acting thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.