Patent · US Active

Spiral conveyor drive control and lubrication

US11008173B1 · kind B1 · utility

0Cited by

9References

20Claims

0Family size

Assignee

JOHN BEAN TECHNOLOGIES AB · SE

Inventors

Jack Peter Urban Wilthorn · Härslöv, SE
Ulf Göran Gramby · Bjärred, SE
Bengt Anders Gerhard Bengtsson · Helsingborg, SE
Per Martin Ström · Vinslöv, SE

Key dates

Filing date	Oct 31, 2019
Grant date	May 18, 2021
Priority date	—
Expiry date	Oct 31, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/10
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

The bottom tier (24) of a conveyor belt (22) arranged in a spiral stack (26) is supported by and driven by inner and outer drive chains (28) and (30). The inner and outer drive chains are supported on and ride along support rails (32) and (34). The inner and outer drive chains are driven by a drive system (35) composed of inner and outer drive systems (36) and (38), each including a drive motor with a drive gear engaged with the inner and outer drive chains. Each of the motors is controlled by a separate variable frequency drive unit (114) and (116) which in turn are controlled by a control system (44). The control system (44) also controls the operation of a lubrication system (40) that supplies lubricant to the drive chains.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.