Patent ID: 6109880
Filing Date: 2000-08-29
Classification: C23C,F04B

Abstract:
An in-situ getter pump comprising:a plurality of solid porous getter elements of sintered getter material, each of said getter elements having an aperture extending therethrough, wherein said plurality of getter elements are included in a first getter assembly;a second getter assembly including a plurality of getter elements;a means for heating said getter material disposed proximate to said getter material;a first focus shield proximate to said getter elements and partially surrounding said getter elements, said first focus shield being positioned between said getter elements and a wall of a chamber that encloses said getter elements, said means for heating, and said first focus shield; anda second focus shield positioned on the other side of said means for heating from said first focus shield, wherein said first focus shield and said second focus shield each include a wedge-shaped portion having two wall portions coupled together, said wall portions oriented approximately toward said means for heating.