Vacuum controlled lifting apparatus
US4978269A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Mar 2, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65F2003/0236
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A vacuum-controlled apparatus for gripping or gripping and lifting a load such as a roll-out refuse container. The lifting apparatus includes a primary vacuum pad for initially engaging the load, the primary vacuum pad comprising a vacuum head for exerting a vacuum-induced suction grip on the load, secondary vacuum pad carried by the vacuum head for secondarily engaging the load and supplementing the vacuum-induced grip on the load. A lifting arm effects vertical movement of the load. The vacuum pads are resilient and have a load-contacting surface on one side thereof generally corresponding to the shape of a surface of the load to be contacted by the load-contacting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.