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US5234741A Expired / Lapsed US ⏱️ 0.0 years remaining

Heavy-duty packing of corrugated glass plates for columns

Assignee: Schott AG
•
Filing: 1990-03-26
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Granted: 1993-08-10
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Expires: 2010-03-26
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Abstract

Abstract The disclosure relates to a packing for a column in the shape of a cylindrical stack of corrugated plates of glass wherein the corrugated plates are held together either by a strap tightened around the stack or by being bonded together at the points of intersection of the corrugated plates.

Inventors

  • 👤 Walburga Kaffrell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 15:42
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/324; B01J2219/32441; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T156/1026; Y10T156/1052; Y10T156/12; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24719

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 71 words
Heavy-duty packing for columns in the shape of a cylindrical stack of corrugated unitary plates made of fluid impervious unitary glass sheets wherein the corrugated plates have furrows and ridges, wherein the ridges of each plate are in contact with the furrows of each adjacent plate, which adjacent plate is oriented to extend opposite the ridges, and wherein the corrugated plates (1) are held together by at least one strap (2).
Claim 2
Dependent Claim 71 words
Heavy-duty packing for columns in the shape of a cylindrical stack of corrugated unitary plates made of fluid impervious unitary glass sheets wherein the corrugated plates have furrows and ridges, wherein the ridges of each plate are in contact with the furrows of each adjacent plate, which adjacent plate is oriented to extend opposite the ridges, and wherein the corrugated plates (1) are held together by at least one strap (2).
Claim 3
Dependent Claim 27 words
Heavy-duty packing according to claim 1, wherein the strap (2) is comprised of a material selected from the group consisting of glass cloth and glass fiber cable.
Claim 4
Dependent Claim 26 words
Heavy-duty packing according to claim 1, wherein the strap (2) is comprised of a material selected from the group consisting of shrink film and stretched film.
Claim 5
Dependent Claim 70 words
Heavy-duty packing for columns in the shape of a cylindrical stack of unitary corrugated plates of fluid impervious unitary glass sheets wherein the corrugated plates have ridges and furrows, wherein the ridges of each plate are in contact with the furrows of each adjacent plate, which adjacent plate is oriented to extend opposite the ridges, the ridges and furrows in contact being adhered to one another by an adhesive bond.
Claim 6
Dependent Claim 70 words
Heavy-duty packing for columns in the shape of a cylindrical stack of unitary corrugated plates of fluid impervious unitary glass sheets wherein the corrugated plates have ridges and furrows, wherein the ridges of each plate are in contact with the furrows of each adjacent plate, which adjacent plate is oriented to extend opposite the ridges, the ridges and furrows in contact being adhered to one another by an adhesive bond.
Claim 7
Dependent Claim 28 words
Heavy-duty packing according to claim 4, wherein the adhesive bond is comprised of an inorganic adhesive selected from the group consisting of sodium silicate bases and glass solder.
Claim 8
Dependent Claim 91 words
Packing for use in tubes forming distillation columns comprising corrugated glass plates having corrugations of adjacent plates extending at an angle with respect to one another to define channels therebetween with undulating walls; means for holding the glass plates in abutment with one another in a cylindrical pack formed about a central axis and having opposed end faces with the corrugations oriented at an angle with respect to the central axis, wherein fluid traversing the pack migrates through the channels as the fluid advances from one end face through the other.
Claim 9
Dependent Claim 91 words
Packing for use in tubes forming distillation columns comprising corrugated glass plates having corrugations of adjacent plates extending at an angle with respect to one another to define channels therebetween with undulating walls; means for holding the glass plates in abutment with one another in a cylindrical pack formed about a central axis and having opposed end faces with the corrugations oriented at an angle with respect to the central axis, wherein fluid traversing the pack migrates through the channels as the fluid advances from one end face through the other.
Claim 10
Dependent Claim 25 words
The packing of claim 6, wherein means for holding the glass plates in abutment with one another includes a glass solder adhesive on the corrugations.
Claim 11
Dependent Claim 23 words
The packing of claim 6, wherein the means for holding the glass plates in abutment with one another includes a sodium silicate adhesive.
Claim 12
Dependent Claim 21 words
The packing of claim 6, wherein the means for holding the glass plates in abutment includes a strap of glass material.
Claim 13
Dependent Claim 22 words
The packing of claim 6, wherein the means for holding the glass plates in abutment includes a strap of heat shrunk material.
Claim 14
Dependent Claim 36 words
The packing of claim 6, wherein the means for holding the glass plates in abutment includes strapping means surrounding the packing, the strapping means forming a seal with the wall of the tube forming the column.
Claim 15
Dependent Claim 104 words
In a method of mass transfer in a packed distillation column, transporting a fluid through a column having a packing therein comprising corrugated glass plates having corrugations of adjacent plates extending at an angle with respect to one another to define channels therebetween with undulating walls; means for holding the glass plates in abutment with one another in a cylindrical pack formed about a central axis and having opposed end faces with the corrugations oriented at an angle with respect to the central axis, wherein fluid traversing the pack migrates through the channels as the fluid advances from one end face through the other.
Claim 16
Dependent Claim 104 words
In a method of mass transfer in a packed distillation column, transporting a fluid through a column having a packing therein comprising corrugated glass plates having corrugations of adjacent plates extending at an angle with respect to one another to define channels therebetween with undulating walls; means for holding the glass plates in abutment with one another in a cylindrical pack formed about a central axis and having opposed end faces with the corrugations oriented at an angle with respect to the central axis, wherein fluid traversing the pack migrates through the channels as the fluid advances from one end face through the other.
Claim 17
Independent Claim 60 words
A method of fabricating packing for use in tubes forming distillation columns comprising forming an array of sheets of corrugated glass plates in a rectangular block with the corrugations extending obliquely with respect to one another to define channels therebetween by adhering the corrugations to one another with an adhesive and thereafter sawing the rectangular block into a cylindrical shape.
Claim 18
Independent Claim 60 words
A method of fabricating packing for use in tubes forming distillation columns comprising forming an array of sheets of corrugated glass plates in a rectangular block with the corrugations extending obliquely with respect to one another to define channels therebetween by adhering the corrugations to one another with an adhesive and thereafter sawing the rectangular block into a cylindrical shape.
Claim 19
Dependent Claim 66 words
The method of claim 13, wherein the adhesive is solder glass paste disposed on the corrugations at points of contact thereof and wherein the method includes the steps of heating the stack to a temperature sufficient to melt the glass solder but not the corrugated glass plates and then cooling the stack to solidity the glass solder and bond the corrugated glass plates to one another.

References Cited (Backward Citations)

FR1143052A Cited
GB943145A Cited
DE1300511B Cited
GB1451786A Cited
DE2327373A1 Cited
FR2230397A1 Cited
GB1471442A Cited
US3947532A Cited
GB1580566A Cited
US4255171A Cited
GB2229377A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-08-09 1997-02-08 1997-08-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-08-09 2001-02-08 2001-08-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-08-09 2005-02-08 2005-08-10 $7700.00 Window Closed / Lapsed

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