公开(公告)号：US3640396A

公开(公告)日：1972-02-08

申请号：US3640396D

申请日：1970-04-03

Applicant: FRAM CORP

Inventor： BROWNELL PETER

IPC: B01D29/01 ,  F02M35/024 ,  B01D27/06

CPC classification number: F02M35/024 ,  B01D29/012 ,  B01D29/072 ,  B01D2201/12 ,  Y10T156/1051

Abstract: A fluid filter comprising a pleated filtering medium arranged in an annulus and having axial main pleats (defined by radial score lines), oblique secondary pleats (defined by ''''sawtooth'''' score lines) at the radial peripheries of the annulus, and seals around the peripheries which overlap at least a portion of the oblique pleats; the filter tapering at the oblique pleats to an axial dimension less than a corresponding axial dimension of the main pleats.

Abstract translation: 一种流体过滤器，包括布置在环形中的褶皱过滤介质，并且具有轴向主褶皱（由径向刻痕线限定），在环的径向周边处的倾斜次级褶皱（由“锯齿”刻痕线限定），并围绕周边密封 其与至少一部分倾斜褶皱重叠; 在倾斜褶皱处的过滤器在小于主褶皱的相应轴向尺寸的轴向尺寸上变细。