Patent US4014557A successfully refreshed from Google Patents.
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
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 18:59
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)
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 |