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특허 상세정보

Pleated filter

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-046/52   
미국특허분류(USC) 96/067 ; 55/497 ; 55/521 ; 55/524 ; 55/DIG.39 ; 210/493.3 ; 210/493.5 ; 210/507
출원번호 US-0123641 (1998-07-28)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Patchett
인용정보 피인용 횟수 : 9  인용 특허 : 28
초록

Filter assemblies are disclosed that include a pleated web in which the pleats are connected to each other to provide support for the filter media during use. The interconnected pleats preferably form an array of openings facing the upstream side of the filter assembly when subjected to fluid pressure during use. In addition, the preferred filter media also includes an array of pockets located behind each of the points at which the pleats are connected. By connecting the pleats to form arrays of openings and pockets during use, the filter assemblies prov...

대표
청구항

[ What is claimed is:] [1.] A filter assembly comprising:a substantially rigid frame defining an opening, the frame having an upstream side and a downstream side;filter media extending across the opening, the filter media having an upstream side and a downstream side; anda plurality of pleats formed in the filter media, each pleat including a leading edge defined by a common fold line on the upstream side of the filter media and an upper panel and a lower panel, the upper and lower panels being separated by the common fold line;wherein first and second p...

이 특허에 인용된 특허 (28)

  1. Tamura Tadashi (Shiga JPX). Air filter. USP1984104478620.
  2. Gasser Hermann (Frauenfeld CHX). Air-filter device. USP1996045505754.
  3. Moosmayer Peter (1c ; Ch. de Gilly Grand-Lancy ; Geneva CHX 1212) Budliger Jean-Pierre (31 ; Rte de Loex Onex ; Geneva CHX 1213) Zurcher Erwin (21 ; Ave. du Lignon Le Lignon ; Geneva TN CHX 1219) Wad. Apparatus for electrically charging meltblown webs (B-001). USP1990024904174.
  4. Brown Richard C. (Dore GB2). Blended-fibre filter material. USP1989014798850.
  5. Lippold Hans-Joachim (Wredeweg 8 W-1000 Berlin 22 DEX). Block-shaped pleated filter insert. USP1994035290447.
  6. Deeds William E. (Knoxville TN). Charging apparatus for meltblown webs. USP1992065122048.
  7. Miller John D. (Ithaca NY) Swiezbin Joseph R. (Glen Cove NY). Corrugated filter arrangement with support layer and flow channels. USP1992015084178.
  8. Spencer ; deceased Victor V. (4 Highland Street late of Tillsonburg CAX) Spencer ; executrix by Mary (4 Highland Street Tillsonburg ; Ontario CAX N4G 2E9) Bagrin Leonid A. (257 Burlington London ; On. Expandable multi-ply obliquely oriented honeycomb filter media. USP1993105252111.
  9. Lhuillier Robert (Longpont Sur Orge PA FRX) Selesnick Michael (Nextown PA) Vieville Jean (Antony FRX) Wolfe John (Flancourt Catelon FRX). Filter cartridge having a honeycombed outer surface, and method of manufacture. USP1988034734195.
  10. Enbom Kjell (Vagnhrad SEX). Filter folded in a zig-zag configuration. USP1991125071555.
  11. Sundet Douglas C. (St. Paul MN) Fox Albert H. (St. Paul MN). Filtration media comprising non-charged meltblown fibers and electrically charged staple fibers. USP1994095350620.
  12. Ninomiya Hitoshi (Kariya JPX) Katoh Kenichi (Nagoya JPX) Fukuta Toshiaki (Nagoya JPX). Folded filter element for filtering fluid. USP1996045512075.
  13. Osendorf Richard J. (North St. Paul MN). Layered air filter medium having improved efficiency and pleatability. USP1994045306321.
  14. Kubik Donald A. (Houlton WI) Davis Charles I. (Cottage Grove MN). Melt-blown fibrous electrets. USP1980084215682.
  15. Tsai Peter P. (Knoxville TN) Wadsworth Larry C. (Knoxville TN). Method and apparatus for the electrostatic charging of a web or film. USP1995035401446.
  16. Klaase Petrus T. A. (Voorburg NLX) van Turnhout Jan (Pijnacker NLX). Method for manufacturing an electret filter medium. USP1986054588537.
  17. Marble Keith S. (Smith Falls CAX). Method for sealing the edge of a filter medium to a filter assembly and the filter assembly produced thereby. USP1996045512172.
  18. van Turnhout Jan (Pnacker NLX). Method for the manufacture of an electret fibrous filter. USP198110RE30782.
  19. Angadjivand Seyed A. (Darlington MN GB2) Jones Marvin E. (Stillwater MN) Meyer Daniel E. (Stillwater MN). Method of charging electret filter media. USP1996035496507.
  20. Nakao Etsuro (Motiyama JPX). Method of manufacturing an electret filter. USP1986064592815.
  21. Paranjpe Prabhakar D. (St. Louis MO). Nonwoven fiber bed mist eliminator. USP1991095045094.
  22. Choi Kyung-Ju. Pleated filter arrangement. USP1998045744036.
  23. Wright Mervin E. (Apple Valley MN) Gronholz Donald D. (Minneapolis MN). Pleated filter element with controlled expansibility and frame therefor. USP1985044512891.
  24. Wright Mervin E. (Apple Valley MN). Pleated fluid filter. USP1979044151095.
  25. Thiebault Bernard (Montmorency FRX). Process for the superficial treatment of a fibrous filtering layer, which is non-woven and highly aerated, forming elect. USP1982124363682.
  26. Nelson David L. (Zundert NLX). Scrim inserted electrostatic fibrous filter web. USP1993075230800.
  27. Price Frank C. (Leicester GBX). Self-supporting filter units. USP1993075230455.
  28. Duffy Dean R. (Woodbury MN). Zigzag filter media and frame having triangular pleat stabilizing elements. USP1996075531892.