Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Punching article from sheet material
Patent
1996-04-12
1997-10-28
Crispino, Richard
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Punching article from sheet material
295271, 264138, 264163, 264259, B29C 3912, B29C 3930
Patent
active
056815158
ABSTRACT:
A method of fabricating an elastomeric keypad having a hard key cap over the elastomeric key. A sheet (50) containing a key cap (24) with graphics (26) is placed onto a first plate (52) of a molding tool (54). A second plate (58) is then attached to the first plate, covering the graphic film. The first plate and the second plate interact in a manner such that the key cap containing the graphic is excised out of the film and retained in the molding tool assembly. The waste material (60) surrounding the key cap is displaced away from its original position. A third plate (64) is then attached to the assembled first and second plates. The assembled molding tool creates a cavity (66) that is representative of the keypad assembly, and an elastomeric material is molded into that cavity. Afar the elastomeric material (12) solidifies, the tool is opened, the molded keypad assembly (10) containing the integrally attached rigid key caps is removed.
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Ericsson GH337 Review, Motorola, Inc. internal review, Ft. Lauderdale, Florida, Apr. 9, 1996.
Guzik Andrzej T.
Leon Robert
Muthuswamy Sivakumar
Pratt Steven D.
Crispino Richard
Dorinski Dale W.
Motorola Inc.
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