Browse Prior Art Database

Pneumatic Plating Fixture

IP.com Disclosure Number: IPCOM000120130D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 3 page(s) / 92K

Publishing Venue

IBM

Related People

Cadwallader, RH: AUTHOR [+4]

Abstract

Disclosed is a pneumatic fixturing device which supports and seals articles, such as multilayer ceramic substrates for plating. The substrates are supported along their thin edges, thus exposing the entire face surface to plating solution or other work to be performed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 57% of the total text.

Pneumatic Plating Fixture

      Disclosed is a pneumatic fixturing device which supports
and seals articles, such as multilayer ceramic substrates for
plating.  The substrates are supported along their thin edges, thus
exposing the entire face surface to plating solution or other work to
be performed.

      State-of-the-art plating fixtures seal substrates along the
outer perimeter of the face surface.  This method restricts circuitry
or components to extend to the edge due to seal-width requirements.

      Referring to Figs. A and B, identical outer frames 1 are
assembled to the inner frame 2 by screws 3 or fused with cement from
both sides.  Identical gaskets 4, formed like rubber tubes, are
compressed between the outer frames 1 and inner frame 2, thereby
generating an airtight seal.

      Referring to Fig. C, substrates 5 are supported and sealed
along their edges from expansion of the tubes 4 when pressurized.
Pressure is applied to the inlet port 6 through a small hole 7 when
depressed by the nozzle of an air gun 8.  When the inlet port 6 is
depressed, pressure will enter the tube from a small passageway
connecting the tube area 4 and the inlet port 6.  The inlet port 6
will seal the gasket by trapping the gasket material between the
opening in the outer frame 1.  When the air gun is released, the
inlet port 6 will self-seal from the pressure of a small rubber
button or spring 9 located in the inner frame 2 under the gasket 4.
The pressure cont...