US4518635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for sealing at least one end of a cellular module
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1983-06-17
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Granted: 1985-05-21
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Expires: 2003-06-17
Abstract
Abstract A process for the selective sealing of at least one end of a cellular module, the latter having rows of parallel channels for carrying at least two different fluids. The process consists of depositing a tight material on the end of the module to be sealed. Deposition is preceded by a preblocking operation using a material in the channels to be sealed which does not contribute to the actual sealing, but which serves as a mechanical support during the deposition of the sealing material, whereby only those channels having the preblocking material are sealed.
Inventors
- 👤 Guy Schnedecker
- 👤 Jacques Mougin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:34
CPC Classifications
F; F28; F28F; F28F11/00; B; B01; B01D; B01D46/00; B01D46/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
127 words
A process for the selective sealing of at least one end of a cellular module having rows of parallel channels serving to carry at least two different fluids, at least a number of the channels being to be sealed while the other channels are to be left open, said process comprising the following steps: depositing a preblocking material on said end of said cellular module, clogging all the channels, removing the preblocking material from the channels which are to be left open, and depositing a sealing material on said end of said cellular module, the preblocking material serving as a mechanical support for the sealing material during deposition of the latter to enable sealing of a channel, whereby only those channels having the preblocking material are sealed.
Claim 2
Dependent Claim
127 words
A process for the selective sealing of at least one end of a cellular module having rows of parallel channels serving to carry at least two different fluids, at least a number of the channels being to be sealed while the other channels are to be left open, said process comprising the following steps: depositing a preblocking material on said end of said cellular module, clogging all the channels, removing the preblocking material from the channels which are to be left open, and depositing a sealing material on said end of said cellular module, the preblocking material serving as a mechanical support for the sealing material during deposition of the latter to enable sealing of a channel, whereby only those channels having the preblocking material are sealed.
Claim 3
Dependent Claim
18 words
A process according to claim 1, wherein the preblocking material is in the form of a dry powder.
Claim 4
Dependent Claim
18 words
A process according to claim 1, wherein the preblocking material is in the form of a viscous paste.
Claim 5
Dependent Claim
25 words
A process according to claim 3, wherein the preblocking material is applied to the end of the module to be sealed by screen process printing.
Claim 6
Dependent Claim
21 words
A process according to claim 1, wherein the preblocking operation is followed by a strengthening heat treatment of the preblocking material.
Claim 7
Dependent Claim
23 words
A process according to claim 1, wherein the preblocking operation is followed by the machining of the corresponding face of the cellular module.
Claim 8
Dependent Claim
20 words
A process according to claim 1, wherein the preblocking material is removed after the deposition of the tight sealing material.
Claim 9
Dependent Claim
17 words
A process according to claim 1, wherein the tight sealing material is deposited by high temperature spraying.
Claim 10
Dependent Claim
32 words
A process according to claim 8, wherein the cellular module performs a rotary movement about an axis parallel to the direction defined by the channels, during the spraying of the sealing material.
Claim 11
Dependent Claim
37 words
A process according to claim 9, wherein the angle at which the tight sealing material is sprayed with respect to the direction defined by the channels is approximately 40° to 50° and is preferably close to 45°.
Claim 12
Dependent Claim
45 words
A process according to claim 8, wherein the tight sealing material is sprayed in an alternating manner using a disk which performs a rotary movement and has at least one slot being placed in front of the end of the cellular module to be sealed.
Claim 13
Dependent Claim
166 words
A process for the selective sealing of at least one end of a cellular module having rows of parallel channels serving to carry at least two different fluids, at least a number of the channels being to be sealed while the other channels are to be left open, said process comprising the following steps: depositing a preblocking material on said end of said cellular module, clogging all the channels, applying a grid to one of the ends of the module, said grid having openings corresponding to the channels which are to be left open, blowing a compressed gas into the channels of the module, to thereby remove the preblocking material from the channels which are to be left open, and depositing a sealing material on the end to be sealed of the module, the preblocking material serving as a mechanical support for the sealing material during deposition of the latter to enable sealing of a channel, whereby only those channels having the preblocking material are sealed.
Claim 14
Dependent Claim
166 words
A process for the selective sealing of at least one end of a cellular module having rows of parallel channels serving to carry at least two different fluids, at least a number of the channels being to be sealed while the other channels are to be left open, said process comprising the following steps: depositing a preblocking material on said end of said cellular module, clogging all the channels, applying a grid to one of the ends of the module, said grid having openings corresponding to the channels which are to be left open, blowing a compressed gas into the channels of the module, to thereby remove the preblocking material from the channels which are to be left open, and depositing a sealing material on the end to be sealed of the module, the preblocking material serving as a mechanical support for the sealing material during deposition of the latter to enable sealing of a channel, whereby only those channels having the preblocking material are sealed.
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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |