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US4430218A Expired / Lapsed US ⏱️ 0.0 years remaining

Separating device for fluids, consisting of support plates and cut sections of a semi-permeable diaphragm

Assignee: Sartorius AG
•
Filing: 1981-07-10
•
Granted: 1984-02-07
•
Expires: 2001-07-10
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Abstract

Abstract A filtration or diffusion cell, consisting of adjacent facing support plates and cut diaphragm sections of a semi-permeable diaphragm, for the treating fluids. The support plates are sealed by stringlike or bandlike sealing elements for the separate flow conduction of the fluids. Support plates are provided with channel grooves, for holding the sealing elements. The channel grooves are open toward the plate plane and are provided with perforations through which a sealing material inserted in a flowable state and solidified in the grooves. Several support plates are connected by the sealing material to form a plate holder-like unit, and form seals for separate flow conduction. The support plates are square-shaped, and the front side and the back side of the cut diaphragm sections are subjected to crosswise flow of the fluid. The cut diaphragm sections are supported by grooves and groove crests extending in flow direction of the support plates. The grooves are provided with longitudinally spaced passages leading to the opposite side of the support plates. Flow barriers crossing the grooves under an angle of about 45° bring about a uniform overflowing of the diaphragm surfaces and prevent shortcuts.

Inventors

  • 👤 Horst Perl
  • 👤 Dietmar Nussbaumer
  • 👤 Hans-Weddo Schmidt
  • 👤 Gunter Pradel
  • 👤 Ulrich Grummert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 06:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D61/00; B01D61/24; B01D61/28; B01D63/00; B01D63/08; B01D63/082; B01D63/084; B01D2313/00; B01D2313/04; B01D2313/041; B01D2313/042; G; G01; G01N; G01N35/00; G01N2035/00178; G01N2035/00326

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 140 words
A separating device comprising support plates and cut diaphragm sections of a semi-permeable material, for a first and second fluid flowing on opposite sides of said diaphragm sections in separate flow paths, wherein said support plates are sealed from the outside of said device and additionally sealed to assure the separate flow of the first and second fluid by a sealing means, the support plates are provided with cutoff channel grooves, said cutoff channel grooves of adjacent facing support plates form conduits into which sealling material in a flowable state is injected, the sealing material is injected into said conduits through perforations in said support plates, said perforations communicate with said conduits and other perforations in other adjacent facing support plates, and the sealing material is allowed to solidify in said perforations and said conduits thus forming said sealing means.
Claim 2
Dependent Claim 140 words
A separating device comprising support plates and cut diaphragm sections of a semi-permeable material, for a first and second fluid flowing on opposite sides of said diaphragm sections in separate flow paths, wherein said support plates are sealed from the outside of said device and additionally sealed to assure the separate flow of the first and second fluid by a sealing means, the support plates are provided with cutoff channel grooves, said cutoff channel grooves of adjacent facing support plates form conduits into which sealling material in a flowable state is injected, the sealing material is injected into said conduits through perforations in said support plates, said perforations communicate with said conduits and other perforations in other adjacent facing support plates, and the sealing material is allowed to solidify in said perforations and said conduits thus forming said sealing means.
Claim 3
Dependent Claim 50 words
A separating device as defined by claim 1 wherein said support plates are provided first fluid distribution shafts and second fluid distribution shafts through which the first fluid and the second fluid enter said support plates and said fluids flow on opposite sides of said diaphragm in separate flow paths.
Claim 4
Dependent Claim 25 words
A separating device as defined by claim 2 wherein said cutoff grooves are disposed on both sides of the outer border of said support plates.
Claim 5
Dependent Claim 46 words
A separating device as defined by claim 3 wherein said cutoff grooves surround the slots for said first fluid and second fluid distribution shafts in said support plates to thereby form said sealing means around said shafts and assure the separate flow of the two fluids.
Claim 6
Dependent Claim 48 words
A separating device as defined by claim 4 wherein said cutoff grooves are provided with slot-like perforations into which the flowable sealing material is injected, said slot-like perforations overlie identical slot-like perforations in adjacent facing support plates thereby forming continuous columns into which flowable sealing material is injected.
Claim 7
Dependent Claim 26 words
A separating device as defined by claim 5 wherein said facing adjacent support plates are inseparably connected by the solidified sealing material in said hollow space.
Claim 8
Dependent Claim 20 words
A separating device as defined by claim 6 wherein the sealing material comprises a thermally and chronologically age-hardenable plastic material.

References Cited (Backward Citations)

US3831763A Cited
US4310416A Cited
US4234428A Cited
US4256692A Cited
US4340475A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-02-06 1987-08-08 1988-02-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-02-06 1991-08-08 1992-02-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-02-06 1995-08-08 1996-02-07 $7700.00 Window Closed / Lapsed

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