| 主权项 |
1. A cartridge for retaining a mass, comprising:
a fluid impermeable cup having an interior space defined between a closed bottom and an open mouth, said cup including an annular wall terminating at a top annular edge which defines said open mouth; and a fluid permeable filter that retains a mass and is joined to a filter support, wherein said filter and said filter support are received in said interior space and reside below said open mouth, said filter support includes a first ring portion having a radially oriented top surface, and a first circumferential outer surface that rests against said annular wall of said cup to support said filter inside said interior space, wherein a top portion of said fluid permeable filter that includes its top edge is received interiorly of said first ring portion and is folded over and directly joined to the radially oriented top surface of said first ring portion, wherein said first ring portion has a first outer diameter sized to allow for intimate contact between said first ring portion and said annular wall of said cup, and wherein said filter support includes a second ring portion having a second outer diameter that is smaller than said first outer diameter of said first ring portion to define a second circumferential outer surface radially recessed inwardly from said first circumferential outer surface, said second ring portion residing below said first ring portion between said first ring portion and said closed bottom of said cup. |
