Lifting device for slab, panel or sheet materials
US5893595A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1997 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Sep 19, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C1/48
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A lifting device suited for use in lifting and handling heavy slabs, sheets of material, or panels generally includes a frame comprising side-plates, the upper ends of which are rigidly secured together by cross-members. The lower portion of one side-plate is angled downwardly and away from the other side-plate. A carriage is arranged between the lower portion of the one side-plate and a movable jaw for vertical movement with respect to the frame. The movable jaw is mounted for horizontal sliding movement on the cross-members between the side-plates. The carriage is suspended from a tension-member, which is guided for vertical movement by the cross-members and has its upper end secured to (or formed as) a lifting lug. When the lifting device is placed over, for example, a slab to be lifted, the carriage is raised by lifting the tension-member, and the slab is clamped sufficiently tightly to be lifted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.