Zero pressure accumulation conveyor and brake assembly
US4819788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G47/263
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A live roller zero pressure accumulation conveyor and brake assembly are described. The brake assembly includes a rotatable drive shaft surrounded by a tubular torque tube. The drive shaft extends into the torque tube and has a diameter such that the cylindrical surface of the drive shaft is capable of frictionally engaging the interior of the torque tube to rotate the torque tube when the drive shaft is rotated, but to slip relative to the torque tube when rotation of the torque tube is restrained. Clamping members surround the torque tube and are movable relative to the exterior surface of the torque tube between a first position in which the clamping surfaces are moved out of contact with the torque tube and the rotating drive shaft rotates the torque tube, and a second position in which the clamping surfaces move into contact with the exterior of the torque tube to restrain the torque tube from rotating with the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.