Membrane press, work base, and fluid-actuated elevating assembly
US5820724A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Aug 20, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B5/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A membrane press is provided for applying a laminating foil to a three-dimensional workpiece to be laminated. The membrane press includes a work base having a supporting surface for carrying the workpiece, and a frame located above the workpiece for holding the foil. The improvement in the membrane press includes a pedestal housing located in the work base and having a cylinder therein communicating through a pedestal opening with the supporting surface of the work base. A piston rod including a workpiece elevating and lowering pedestal is positioned in the cylinder in axial alignment therewith. The pedestal communicates with the supporting surface through the pedestal opening. Upper and lower pistons are affixed to the piston rod in fluid-pressure transmitting relation within the cylinder in axially spaced-part relation to each other. The pistons define respective upper and lower axially aligned pressure-transmitting surfaces. Fluid pressure selectively communicates with the cylinder and the pressure-transmitting surfaces of the pistons for moving the pistons and the pedestal between a workpiece-elevating position wherein one end of the pedestal extends through the pedestal openin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.