Material handling unit with multidirectional helical roller assemblies
US6244417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1998 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Jul 30, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G39/025
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A material handling unit includes a plurality of multidirectional helical roller assemblies positioned transverse across and longitudinally along a planar platform. Each of the multidirectional helical roller assemblies includes an outer ring member having an inner bearing race, and an inner ring member freely rotatable relative to the outer support member. The inner ring member has an outer bearing race that cooperates with the inner bearing race of the outer ring member. The inner ring member forms a central opening and a roller is rotatably mounted on the inner ring member and extends transverse across the central opening and is offset to a centerline defined by the central opening. The inner ring member supports the roller and is free to turn in the direction of applied force as pallets and cargo containers are fed along the platform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.