Accumulating conveyor of the low pressure type
US4753339A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1987 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | May 20, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G13/07
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a low pressure accumulator conveyor of the type where cartons are conveyed on a surface defined by successive freely rotatable rollers which are driven from beneath by frictional engagement with a continuous belt, the belt is held in periodically released driving engagement with the rollers by a plurality of vertically movable supporting assemblies, each of which includes a compound sheave wherein the bottom wall of the groove supporting the belt includes a major portion cylindrically curved about the rotational axis of the sheave, and a minor portion convexly curved about a radius which varies at a substantially uniform rate from a maximum at each end thereof equal to the radius of the major portion of the groove wall to a centrally located minimum less than that of a cam lobe on the sheave which thereby periodically disengages the belt from its associated carton-carrying roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.