초록 ▼

A filter pack (20) and method of making the same are provided. Finely divided inert material (23) is bound in the filter pack (20) for use in a spin pot. Essential elements are a wall (21) which defines a cavity in which the finely divided inert material (23) is placed, a cap (26), a first cover (25

A filter pack (20) and method of making the same are provided. Finely divided inert material (23) is bound in the filter pack (20) for use in a spin pot. Essential elements are a wall (21) which defines a cavity in which the finely divided inert material (23) is placed, a cap (26), a first cover (25), and a first screen member (24) comprised of at least one screen having a mesh size which prevents passage of the finely divided inert material therethrough but which allows passage of a fluid therethrough. The first screen member (24) forms a press fit between the wall (21) and the first cover (25) to cover the exposed portion of the cavity. The finely divided inert material (23) is compressed in the filter pack (20) by the intrusion of the first cover (25) and the first screen member (24) into the cavity occupied by the finely divided inert material (23). A reversible filter pack (20) is also provided in which each end of the cavity is closed by means of a press fit cover (25, 27), screen member (24, 26), and wall (21); intrusion of at least one of the covers and screen members into the cavity compresses the finely divided inert material therein.

대표청구항 ▼

A filter pack, in which finely divided inert material is bound, for use in a spin pot, comprising: a. a wall, defining a cavity in which a finely divided inert material is placed; b. a cap, having a plurality of apertures therethrough which are small enough to prevent passage of the finely divided i

A filter pack, in which finely divided inert material is bound, for use in a spin pot, comprising: a. a wall, defining a cavity in which a finely divided inert material is placed; b. a cap, having a plurality of apertures therethrough which are small enough to prevent passage of the finely divided inert material therethrough but which allow passage of a fluid therethrough, and retaining the finely divided inert material in the cavity defined by said wall; c. a first cover, allowing passage of a fluid therethrough, a portion of the external periphery of said first cover having a shape similar to but slightly smaller than a matching portion of the internal periphery of said wall; and d. a first screen member, press fitted between the portion of the external periphery of said first cover and the portion of the internal periphery of said wall, and covering the exposed portion of the cavity, said first screen member comprising at least one screen having a mesh size which prevents passage of the finely divided inert material therethrough but which allows passage of a fluid therethrough; whereby the finely divided inert material is compressed and held in place in the filter pack by the intrusion of said first cover and said first screen member into the cavity occupied by the finely divided inert material.