US3638403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-adsorbing elements, their method of manufacture, and devices incorporating such adsorbent elements
Assignee: Air Liquide SA
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Filing: 1969-06-30
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Granted: 1972-02-01
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Expires: 1989-06-30
Abstract
Abstract A gas-adsorbing element associated with a thermal source which is successively a cold source and then a hot source, and so on. The gas-adsorbent element is constituted by a ductile metallic support having an extended surface and, on at least one surface of said support, a coating of a gas-adsorbing product such as zeolite, constituted by material in the form of particles incrusted by compression between each other and on the support of ductile metal. This adsorbent element is prepared, for example by passing an aluminum tape between two cylinders of a rolling mill on which particles of the adsorbent product are deposited by hoppers. An adsorbent element of this kind can be incorporated in a vacuum pump, in a purification device, a compressor or a refrigerator.
Inventors
- 👤 Pierre Delacour
- 👤 Pierre Langlade
- 👤 Michel Renard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:41
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38; B; B01; B01D; B01D53/00; B01D53/02; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
30 words
A gas-adsorbing element as claimed in claim 1, in which the material forming said ductile support is a member selected from the group consisting of gold, silver, copper and aluminum.
Claim 2
Dependent Claim
38 words
A gas-adsorbing element as claimed in claim 1, in which the density of said coating is at least twice as great as the apparent density of this same material in the state of a mass of free particles.
Claim 3
Dependent Claim
23 words
A gas-adsorbing element as claimed in claim 1, in which the size of the particles of said coating is 2 to 10 microns.
Claim 4
Dependent Claim
21 words
A gas-adsorbing element as claimed in claim 1, in which the thickness of said coating is from 30 to 50 microns.
Claim 5
Dependent Claim
26 words
A gas-adsorbing element as claimed in claim 1, in which said support of ductile material is a sheet having a thickness of 20 to 100 microns.
Claim 6
Independent Claim
74 words
A method of manufacture of a composite gas-adsorbent element, said method comprising the steps of: electrically charging a flexible tape of ductile metallic material, passing said tape into a fluidized bath of zeolite particles to effect a continuous deposit of a layer of said particles on both faces of said tape, and pressure rolling said tape to convert said layer to an adherent coating of particles agglomerated together and partly incrusted in said tape.
Claim 7
Dependent Claim
61 words
A method of manufacture of an adsorbent element as claimed in claim 7, in which the thickness of the layer of solid particles deposited on said tape is from 20 to 200 miCrons, the pressure applied converting said layer into a coating of particles agglomerated together and incrusted in said tape, said coating having a thickness of 10 to 100 microns.
Claim 8
Dependent Claim
20 words
A gas-adsorbing element as claimed in claim 1, and further comprising thermally conductive means in thermal contact with said tape.
Claim 9
Dependent Claim
77 words
A gas-adsorbing element comprising a flat flexible tapelike support of ductile metallic material and, on at least one face of said flat support, a coating of gas-adsorbing products such as zeolites, in the form of solid particles directly agglomerated with each other and partly incrusted in said support, said support being wound radially on itself in a coil, and spacer means of thermally conductive material extending at intervals along the transverse direction of said flat elongated support.
Claim 10
Dependent Claim
90 words
A gas-adsorbing device comprising a first compartment, means for bringing thermal energy into said first compartment, a second compartment, in said second compartment at least one gas-adsorbing element comprising a flat flexible tapelike support of ductile metallic material, and on at least one face of said flat support, a coating of gas-adsorbing products such as zeolites, said coating being in the form of solid particles directly agglomerated together and partly incrusted in said support, and thermal connection means between the metallic support of each gas-adsorbing element and said first compartment.
Claim 11
Dependent Claim
37 words
A gas-adsorbing device as claimed in claim 11, in which said thermal connection means comprise a conducting body and a plurality of welding points between said conducting body and the metallic support of each said adsorbent element.
Claim 12
Dependent Claim
40 words
A gas-adsorbing device as claimed in claim 11, in which said thermal connection means comprise a conducting body with an extended surface and direct contact means of the edge of the support of said adsorbent element against said conducting body.
Claim 13
Dependent Claim
22 words
A gas-adsorbing device as claimed in claim 13, in which said direct contact means comprise pressure means for applying continuous mechanical pressure.
Claim 14
Dependent Claim
56 words
A gas-adsorbing device as claimed in claim 11, in which the ductile metallic support of each adsorbent element is wound radially on itself to form a coil, said thermal connection means comprising a flat conducting body and means for ensuring direct thermal contact between one edge of each said metallic support and said flat conducting body.
Claim 15
Dependent Claim
57 words
A gas-adsorbing device as claimed in claim 11, comprising a plurality of adsorbent elements formed by a stack of plates with perforations, said thermal connection means comprising tie rods passed through the perforations of said plates, said tie rods being in thermal contact with the metallic supports of said adsorbent plates at the point of said perforations.
Claim 16
Dependent Claim
55 words
A gas-adsorbing device as claimed in claim 15, in which a plurality of said adsorbent coils are superimposed on each other and in which said thermal connection means comprise flat intermediate conducting supports between the edges of two adjacent coils, said intermediate supporting bodies being permeable to gases and being made of thermally conductive material.
Claim 17
Dependent Claim
28 words
A gas-adsorbing device as claimed in claim 17, in which said thermal connection means comprise a separating partition, of thermally conductive material, between said first and second compartments.
Claim 18
Dependent Claim
42 words
A gas-adsorbing device as claimed in claim 18, in which said thermal connection means between the edge of the support of an adsorbent element incorporate intermediate parts in thermal contact with said thermally conductive separating partition between said first and second compartments.
Claim 19
Dependent Claim
30 words
A gas-adsorbing device as claimed in claim 19, in which said separating partition is of the cylindrical bellows type, said second compartment being external to and surrounding said first compartment.
Claim 20
Dependent Claim
43 words
A gas-adsorbing device as claimed in claim 20, in which said thermal connection means comprise an axial tie rod and at least two end-plates adapted to clamp between them the coils of wound tape, said tie rods tending to pull together said end-plates.
Claim 21
Dependent Claim
34 words
A gas-adsorbing device as claimed in claim 12, in which the welding material employed for each said welding point has a melting point comprised between 300* and 400*, and has an affinity for aluminum.
Claim 22
Dependent Claim
84 words
A method of preparation of a thermal connection by welding for an adsorbent device as claimed in claim 12, in which a bed of granular welding material is placed on the surface of said separating partition between the first and second compartments and in which the coils of wound tape are applied under pressure against the face covered with said granular welding material, and in which the whole assembly is heated in a controlled atmosphere to the melting temperature of said granular welding material.
Claim 23
Dependent Claim
52 words
A gas-adsorbing device as claimed in claim 16, in which each said tie rod is made of a material having a coefficient of expansion identical with or different from that which constitutes the metallic support of said adsorbent elements, depending on the pressure effect which it is desired to obtain in operation.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |