GB1379995A - Liquid filter - Google Patents

Liquid filter

Info

Publication number
GB1379995A
GB1379995A GB1616672A GB1616672A GB1379995A GB 1379995 A GB1379995 A GB 1379995A GB 1616672 A GB1616672 A GB 1616672A GB 1616672 A GB1616672 A GB 1616672A GB 1379995 A GB1379995 A GB 1379995A
Authority
GB
United Kingdom
Prior art keywords
strip
fold lines
sealing
chamber
april
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1616672A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1379995A publication Critical patent/GB1379995A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
    • B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/22—Cell-type filters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Filtering Materials (AREA)

Abstract

1379995 Spirally wound filter element ROBERT BOSCH GmbH 7 April 1972 [28 April 1971] 16166/72 Heading B1D A liquid filter element comprises a strip of filter medium folded about one or two longitudinal fold lines and spirally wound, sealing strip(s) being located between the turns and/or between the folded portions so as to define three spiral chambers, two of which are open to opposite ends of the element while the third chamber is totally enclosed. In use liquid flows from one open chamber to the other via the closed chamber, passing twice through the strip. The strip porosity may vary transversely so that a two stage filtration is achieved. The strip may have transverse corrugations to space the turns and to allow for the winding. In Fig. 2 the strip has one fold line 39 and two sealing strips 34, 38. In Fig. 4 the strip has two fold lines and one sealing strip. In Fig. 3 (not shown) the strip has two fold lines and two sealing strips. Fig. 1 (not shown) illustrates the element in its housing.
GB1616672A 1971-04-28 1972-04-07 Liquid filter Expired GB1379995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712120866 DE2120866C3 (en) 1971-04-28 1971-04-28 Filter element

Publications (1)

Publication Number Publication Date
GB1379995A true GB1379995A (en) 1975-01-08

Family

ID=5806233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1616672A Expired GB1379995A (en) 1971-04-28 1972-04-07 Liquid filter

Country Status (6)

Country Link
JP (1) JPS5516689B1 (en)
BR (1) BR7201101D0 (en)
DE (1) DE2120866C3 (en)
FR (1) FR2135919A5 (en)
GB (1) GB1379995A (en)
IT (1) IT959657B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726407A (en) * 1971-04-22 1973-04-10 Millipore Corp Multi-stage spiral-wound filter

Also Published As

Publication number Publication date
IT959657B (en) 1973-11-10
FR2135919A5 (en) 1972-12-22
DE2120866C3 (en) 1979-07-26
DE2120866B2 (en) 1978-10-19
BR7201101D0 (en) 1973-05-03
JPS5516689B1 (en) 1980-05-06
DE2120866A1 (en) 1972-11-09

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee