Braking system for live roller conveyor
US5217109A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Dec 4, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G2203/042
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method and apparatus for braking a selected group of rollers in a live roller conveyor in which groups of rollers are driven by belts looped about a torque tube carried for rotation about a drive shaft and maintained in frictional contact therewith by the tension in the means belts. The brake means comprises a member carried on a pivotally mounted cam and movable between an "on" position in which the member is in contact with and applies pressure to the torque tube and an "off" position out of contact with the torque tube. In the "on" position the member applies pressure to the torque along a line radially of the drive shaft that cause the tube to move into a position in which it is coaxially aligned with the drive shaft whereby the frictional drive between the torque tube and the drive shaft is disengaged thereby bringing the rollers associated with the torque tube to a halt. The cam is caused to move the member between the "on" and "off" positions by a pneumatic motor actuated by a sensor downstream of the group of rollers indicating the accumulation of packages at the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.