Patent US3704869A successfully refreshed from Google Patents.
US3704869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas/liquid film contact apparatus
Assignee: Individual
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Filing: 1969-08-01
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Granted: 1972-12-05
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Expires: 1989-08-01
Abstract
Abstract Packing sheets for gas/liquid contacting apparatus consist of a number of spaced parallel units, each of which is a sector of a hollow corrugated tube, connected by planar portions of the sheets. The assembled sheets provide a regular array of hollow corrugated tubes.
Inventors
- 👤 Ronald Priestley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/32; F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/3222; B01J2219/32224; B01J2219/32227; B01J2219/32237; B01J2219/32279; B01J2219/32282; B01J2219/324; B01J2219/32408; B01J2219/32425; B01J2219/32458; B01J2219/32483
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
73 words
A packing sheet for use in apparatus in which a film of liquid is caused to flow in contact with a gas, the sheet comprising a number of spaced parallel portions each of which is shaped as a sector of a hollow corrugated tube, of which the peaks and valleys of the corrugations occur successively along the length of the tube, the said portions being connected by substantially planar portions of said sheets.
Claim 2
Dependent Claim
73 words
A packing sheet for use in apparatus in which a film of liquid is caused to flow in contact with a gas, the sheet comprising a number of spaced parallel portions each of which is shaped as a sector of a hollow corrugated tube, of which the peaks and valleys of the corrugations occur successively along the length of the tube, the said portions being connected by substantially planar portions of said sheets.
Claim 3
Dependent Claim
22 words
A packing sheet according to claim 1 wherein the cross section of the unit is an arc of a closed regular curve.
Claim 4
Dependent Claim
31 words
A packing sheet according to claim 2 wherein the cross section of the unit is an arc of a circle extending about an angle selected from 60*, 90*, 120* and 180*.
Claim 5
Dependent Claim
38 words
A packing sheet according to claim 1 wherein the section to the tube wall, sectioned in a plane including the axis of said tube, consists of consecutive curved portions, the junctions between said curved portions including a ridge.
Claim 6
Dependent Claim
31 words
A packing sheet according to claim 4 wherein consecutive curve portions are consecutively oppositely curved and connected together with short straight-line linking portions which join the curved portions at an angle.
Claim 7
Dependent Claim
37 words
A packing for use in apparatus in which a film of liquid is caused to flow in contact with a gas, which comprises a plurality of packing sheets according to claim 1 assembled together to form tubes.
Claim 8
Dependent Claim
24 words
Apparatus in which a film of liquid is caused to flow in contact with a gas which includes a packing according to claim 6.
Claim 9
Dependent Claim
20 words
A packing sheet according to claim 1 which is formed from a sheet of thermoplastics material of substantially even thickness.
Claim 10
Dependent Claim
34 words
A packing sheet according to claim 1 wherein deformations are provided on the said sheets to aid in registering a plurality of sheets together to consolidate a packing unit made up from such sheets.
Claim 11
Dependent Claim
24 words
Apparatus in which a film of liquid is caused to flow in contact with a gas which includes packing sheets according to claim 1.
Claim 12
Dependent Claim
109 words
A packing for use in apparatus in which a film of liquid is caused to flow in contact with a gas, which comprises a plurality of packing sheets, each said sheet being divided into a number of strips, each said strip, considered in a direction transverse to that of the strip, being an arc of a closed regular curve, the contour of the surface of the strip, considered in the direction thereof, being made up of a number of curved portions connected either directly or by linking portions such that the surface of the strip at that point constitutes a ridge, assembled together to form, in section, closed curves.
Claim 13
Dependent Claim
109 words
A packing for use in apparatus in which a film of liquid is caused to flow in contact with a gas, which comprises a plurality of packing sheets, each said sheet being divided into a number of strips, each said strip, considered in a direction transverse to that of the strip, being an arc of a closed regular curve, the contour of the surface of the strip, considered in the direction thereof, being made up of a number of curved portions connected either directly or by linking portions such that the surface of the strip at that point constitutes a ridge, assembled together to form, in section, closed curves.
Claim 14
Dependent Claim
24 words
Apparatus in which a film of liquid is caused to flow in contact with a gas which includes a packing according to claim 11.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |