Membrane press and work base

Details Membrane press and work base Membrane press and work base

1996-05-09

1997-12-02

Noland, Kenneth

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes fluid supporting ram in drive-means

269 27, B66B 904

Patent

active

056925840

ABSTRACT:
The invention is an improved membrane press, and method of elevating a workpiece above the supporting surface of a work base. The membrane press includes a work base having a supporting surface for carrying the workpiece, and a foil-pressing frame positioned above the workpiece for heating and applying the laminating foil to the workpiece. The improvement in the membrane press includes a plurality of workpiece-lifting pedestals residing substantially beneath the supporting surface of the work base. A piston is located beneath each pedestal, and responds to the placement of the workpiece onto the supporting surface of the work base. The piston imparts an upward force on certain ones of the pedestals residing adjacent to and beneath the workpiece to raise the pedestals and workpiece upwardly above the supporting surface of the work base. The raised pedestals permit the top surface, corners, and peripheral borders of the elevated workpiece to be laminated.

REFERENCES:
patent: 4314814 (1982-02-01), Deroode
patent: 4447282 (1984-05-01), Valerio et al.
patent: 5225027 (1993-06-01), Diekwisch
patent: 5346193 (1994-09-01), Kitagawa
patent: 5397214 (1995-03-01), Cheung
Prof. Rolf Hesch, "Membrane Press Systems A Critical Comparison With View to Heating Systems, Heat Distribution, Pressing Time and Costs," all pages.
Heinrich Wemhoner, "The Development of Membrane Press Technology," all pages.
FDM's Woodworking Technology 2000, "Unbeatable Doors at Any Price," Oct. 1993, all pages.

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