|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||210/330 ; 210/352 ; 210/398 ; 210/451|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 1|
Flowable material is pumped between upstream and downstream passages in a body through an aperture portion formed in a slide member that communicates between the passages. An annular seal member engages the slide member under the urging of a Belleville spring. The slide member, formed as a filter, has a region of uniform porosity that is moved progressively through the path of flow of the material for changing the filter.
Means for filtration of a flowable material comprising, in combination, a body defining upstream and downstream passages and having a transverse filter channel and a closed annular flat first sealing surface defining a first opening communicating between one of said passages and said channel, a seal member having a closed annular flat second sealing surface directly opposing said first sealing surface and defining a second opening opposing said first opening, said second opening communicating between the other of said passages and said channel, a filter ...