公开(公告)号：US3799354A

公开(公告)日：1974-03-26

申请号：US33157073

申请日：1973-02-12

Applicant: GEN MOTORS CORP

Inventor： BUCKMAN K ,  ROGERS K

IPC: B01D29/11 ,  B01D46/24 ,  B01D46/52 ,  B01D27/06

CPC classification number: B01D46/523 ,  B01D29/111 ,  B01D29/21 ,  B01D46/24 ,  B01D2201/122 ,  B01D2265/04 ,  B01D2265/06

Abstract: A liquid filter element is formed as a hollow tubular assembly of pleated filter paper or like material the pleats being of ''''W'''' form (viewed looking inwardly from the outer periphery of the element) with alternate wide and narrow pleats, at least the wide pleats having spacer formations impressed therein to space the two parts of each wide pleat from each other and from adjacent narrow pleats and to space the wide pleats from each other at the inner periphery of the element, and the pleat fold lines being arranged so as to form creases of rectangular ''''U'''' section, with widened portions at the junctions between adjacent wide and narrow pleats at opposite ends of the element, and intermediate the ends, the abutment of the spacer formations and widened fold line portions ensuring uniform circumferential spacing and radial disposition of the pleats.

Abstract translation: 液体过滤器元件形成为褶皱滤纸或类似材料的中空管状组件，褶皱为“W”形（从元件的外周向内看），具有交替的宽而窄的褶皱，至少宽的褶皱 在其中印有间隔物结构，以使每个宽褶皱的两个部分彼此间隔开并且从相邻的窄褶皱中间隔开，并在该元件的内周处将宽褶皱彼此间隔开，褶皱折叠线被布置成形成 矩形“U”部分的折痕，在元件相对两端的相邻的宽和窄褶皱之间的接合部处具有加宽的部分，并且在端部之间的中间，间隔物结构的邻接和加宽的折叠线部分确保均匀的圆周间隔和径向布置 的褶皱。