Cushioned stop for powered conveyor
US5168976A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1992 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Feb 14, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G2205/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A stop mechanism mountable on a powered conveyor, such as a conveyor having continuously-driven drive rollers which support and drivingly move loads such as pallets. The stop mechanism is mounted directly under and between sidewardly-spaced drive rollers to permit use of through shafts between sidewardly-spaced pairs of drive rollers. The stop mechanism has a vertically-oriented stop lever which projects upwardly for contacting a moving load, which contact effects limited vertical swinging of the lever into engagement with a fixed stop. The lever is coupled to a hydraulic shock absorber which effects rapid deceleration of the load to cause cushioned contact thereof with the fixed stop. The shock absorber preferably has an internal orifice arrangement associated with a pressure chamber which results in the orifice flow area progressively decreasing as the stop lever is moved by the load to provide more optimum control over liquid pressure and control over the resistance force imposed against the load. The stop lever is movable downwardly to disengage the load, and is spring urged upwardly to permit engagement with the next load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.