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US 2003/0118065 A1Published application
Water getter devices for laser amplifiers and process for the manufacture thereof
AssigneeSaes Getters S.P.A.
InventorsPaolo Della Porta, Paolo Battilana, Luciano Pisoni
Life of this patent
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Abstract
Water getter devices (10) are described which consist of a powdered water. getter material (18) in a container that is permeable to gases but capable of retaining solid particles and does not need welding. A process for the production of said devices is also described.
Claims16
A water getter device (10, 10′) for laser amplifiers consisting of:
- a metallic container (11, 11′) of cylindrical shape with closed bottom, upperly open and having a member of mechanical retention (12) at the upper edge;
- an annular metal member (13) with a L-shaped profile being inserted in the container and having a lower height than the latter, with a cylindrical surface (14) having an outer diameter slightly smaller than the inner diameter of the container and with a planar surface (15) facing the inside of the container;
- a metallic element (16) being permeable to the gases but capable of retaining solid particles, fixed between the planar surface of the metal member with L-shaped profile and said element of mechanical retention of the container, which defines a space (17) with the container bottom and cylindrical wall of the L-shaped member;
- and
- a water getter material (18) in said space.
2 more elements
A process for manufacturing a water getter device for laser amplifiers comprising the steps of:
- providing an annular metal member (13) with L-shaped profile and inserting the same, with its planar surface (15) directed downwards, into a mould (60) of suitable geometry with a closed bottom;
- introducing powders of either a water getter material (18) or of a precursor thereof into the hollow formed by the member with L-shaped profile and compressing the powder, thus obtaining a pellet (70) formed of compressed powders which are integral with said L-shaped member;
- turning said pellet upside down and introducing it into a cylindrical container (80) having a closed bottom and a diameter slightly larger than that of the pellet;
- inserting in the cylindrical container a metallic element (16) permeable to the gases but capable of retaining solid particles, laying it onto said pellet, said metallic element having a diameter which is substantially the same as the pellet diameter;
- folding down upper edge (81) of the container or portions thereof onto the gas permeable metallic element.
2 more elements
Dependencies are inferred from the claim text.