Telescoping rigid frame and scissor conveyor
US5490592A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Dec 5, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G41/008
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Telescoping rigid frame/scissor conveyors. Such conveyors are formed of a plurality of telescoping frame segments which may be positioned at any number of desired nested/unnested configurations. The frame segments bear a lazy tong or scissors conveyor structure which assures uniform roller spacing, and rollers positioned at one height along the conveyor rather than at different heights for each frame segment. Counterintuitively, the increased structural complexity is more than outweighed by the benefits resulting from the uniformly positioned rollers of a uniform height, which are thus adapted to convey articles in a reliable and jam-free fashion unlike previous expandable rigid frame conveyors. Conveyors according to the present invention may contain automatic locks to prevent overextension, powered rollers and motive devices for automatic and reliable extension and retraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.