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US4014557A Expired / Lapsed US ⏱️ 0.0 years remaining

Column packing

Assignee: Glitsch Inc
•
Filing: 1975-06-04
•
Granted: 1977-03-29
•
Expires: 1995-06-04
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Abstract

Abstract Column packing comprising a first layer and a second layer adjacent said first layer, each said layer comprising an inner knitted flattened tubular mesh element formed by inner filaments having 8 to 14 counts per inch, and outer knitted flattened tubular mesh element formed of outer filaments surrounding said inner element and in contact therewith and having 41/2 to 61/2 counts per inch, the axes of said inner element and said outer element being substantially parallel or coincident, at least one of said layers being crimped in wave form, the crests of said waves being at an angle of 20° to 45° to a line perpendicular to said axes, a surface of said first layer being generally in contact with a surface of said second layer, the diameter of said inner filaments being from 29 to 75% of the diameter of said outer filaments.

Inventors

  • 👤 Edward J. Bragg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 06:20
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/20; F16J15/22; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/32224; B01J2219/32227

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 145 words
Column packing comprising a first layer and a second layer adjacent said first layer, each said layer comprising an inner knitted flattened tubular mesh element formed of inner filaments and having 8 to 14 counts per inch, an outer knitted flattened tubular mesh element formed of outer filaments, surrounding said inner element and in contact therewith and having 41/2 to 61/2 counts per inch, the axes of said inner element and said outer element being substantially parallel or coincident, at least one of said layers being crimped in wave form, the crests of said waves being at an angle of 20° to 45° to a line perpendicular to said axes, a surface of said first layer being generally in contact with a surface of said second layer, the diameter of said inner filaments being from 29 to 75% of the diameter of said outer filaments.
Claim 2
Dependent Claim 145 words
Column packing comprising a first layer and a second layer adjacent said first layer, each said layer comprising an inner knitted flattened tubular mesh element formed of inner filaments and having 8 to 14 counts per inch, an outer knitted flattened tubular mesh element formed of outer filaments, surrounding said inner element and in contact therewith and having 41/2 to 61/2 counts per inch, the axes of said inner element and said outer element being substantially parallel or coincident, at least one of said layers being crimped in wave form, the crests of said waves being at an angle of 20° to 45° to a line perpendicular to said axes, a surface of said first layer being generally in contact with a surface of said second layer, the diameter of said inner filaments being from 29 to 75% of the diameter of said outer filaments.
Claim 3
Dependent Claim 10 words
Packing according to claim 1 wherein said filaments are wire.
Claim 4
Dependent Claim 35 words
Packing according to claim 2 wherein both said first layer and said second layer are crimped, the crests on said first layer being opposed to and in contact with the crests on said second layer.
Claim 5
Dependent Claim 14 words
Packing according to claim 3 wherein said layers are rolled together in a spiral.
Claim 6
Dependent Claim 14 words
Packing according to claim 3 comprising a plurality of alternating first and second layers.
Claim 7
Dependent Claim 18 words
Packing according to claim 1 wherein said inner element is multi-knitted of a plurality of said inner filaments.

References Cited (Backward Citations)

US1720384A Cited
US2761203A Cited
US2882082A Cited
US2940168A Cited
US3033722A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-03-28 1980-09-27 1981-03-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-03-28 1984-09-27 1985-03-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-03-28 1988-09-27 1989-03-29 $7700.00 Window Closed / Lapsed

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