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Browse Prior Art Database

Vacuum Vertical Pressure Device

IP.com Disclosure Number: IPCOM000115692D
Original Publication Date: 1995-Jun-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Gorman, R: AUTHOR [+3]

Abstract

Disclosed is an invention to apply pressure to a product located within a heated vacuum chamber.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Vacuum Vertical Pressure Device

      Disclosed is an invention to apply pressure to a product
located within a heated vacuum chamber.

      The design consists of a welded structure attached to the top
of the vacuum chamber.  Mounted to the structure is a commercially
available electric cylinder producing enough force to apply the 600
psi maximum force required during the curing cycle.  A commercial
load cell is used to monitor and control the force of the cylinder.
The major design challenge is how to seal the system allowing a
piston to go through the top of the chamber and using materials which
will not out gas and transfer heat while operating within a 500
degree centigrade environment.  This is accomplished by using a metal
bellows design to seal the through piston holes in the chamber and a
reverse spring loaded device attached to hold the piston up, which
over comes the vacuum force of pulling the piston down before it is
required.  The piston is made of vectra which will withstand the
pressure and not transfer the heat to the electric cylinder and load
cell.