Tray stacking and unstacking corner grippers and handler
US7544038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2006 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Oct 27, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G60/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a tray handler for stacking and de-stacking ophthalmic prescription trays. The tray handler includes a plurality of spaced clamp assemblies defining a stack area along a conveyor, a lift plate, and first and second actuators. The lift plate is operably disposed within the stack area. The first actuator is operably associated with the clamp assemblies, which are inwardly and outwardly moveable relative the lift plate upon actuation of the first actuator. The second actuator is operably associated with the lift plate, which is vertically moveable within the stack area upon actuation of the second actuator. A controller is in communication with the first and second actuators and controls actuation thereof. A method of handling ophthalmic prescription trays is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.