US3697635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of capillary exchangers
Assignee: Novartis AG
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Filing: 1971-04-16
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Granted: 1972-10-10
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Expires: 1991-04-16
Abstract
Abstract A process for the manufacture of capillary exchangers in which the capillaries are arranged side by side in spaced relationship to each other, is described and comprises the steps of A. COATING THE END ZONES OF A NUMBER OF CAPILLARIES PRODUCED IN THE ABOVE-DESCRIBED MANNER AND STILL CONTAINING THEIR AUXILIARY CORES, WITH REINFORCING MANTLES OF A MATERIAL CAPABLE OF SUPERFICIALLY DISSOLVING THE WALL OF THE CAPILLARY DURING ITS APPLICATION; B. ARRANGING THESE CAPILLARIES IN A BUNDLE LEAVING SPACES BETWEEN THEM FOR THE FLOW OF A LIQUID OR GASEOUS MEDIUM THERETHROUGH; C. POURING BETWEEN THE REINFORCING MANTLES AT ONE END OF THE BUNDLE A LAYER OF A HARDENABLE MATERIAL CAPABLE OF ADHERING SEALINGLY TO THE SAID MANTLES, WHEREBY THE ENDS OF THE CAPILLARIES AT THE LEVEL OF THEIR ADJACENT REINFORCING MANTLES ARE EMBEDDED IN A TRANSVERSE WALL FORMED BY SAID MATERIAL AFTER HARDENING, AND D. REMOVING THE AUXILIARY CORES FROM THE CAPILLARIES BEFORE OR AFTER STEP (C).
Inventors
- 👤 Hans Joachim Dietzsch
- 👤 Otto Dietzsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:05
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/06; F28F21/067; B; B01; B01D; B01D65/00; B01D65/08; B01D69/00; B01D69/08; B29; B29C; B29C31/00; B29C31/008; B29C33/00; B29C33/44; B29C33/52; B29C39/00; B29C39/02; B29C39/10; B29C41/00; B29C41/24; B29C65/00; B29C65/70; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C66/5346; B29C66/53465; B29C70/00; B29C70/68; B29C70/84; B29C70/845; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/043; F28D; F28D7/00; F28D7/10; F28D7/103; F28F21/062; B01D2321/00; B01D2321/08; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/14; B29L2031/18; B29L2031/60; B29L2031/601; F28D21/00; F28D2021/0019; F28D2021/005; F28F2260/00; F28F2260/02; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/4998
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
A process as described in claim 1, wherein the capillaries which still contain the auxiliary core are inserted and held in distancing means, thereby maintaining the capillaries spaced from one another throughout the process, whereupon one end of a bundle of capillaries thus held is introduced from above into a separating agent present in a casting mold, then pouring onto the surface of the separating agent a layer of said hardenable material, hardening the same, removing the casting and the separating agent therein from the ends of the capillaries and removing the auxiliary cores from the interior of the capillaries, by dissolving or melting, before or after application of said poured-on layer.
Claim 2
Dependent Claim
40 words
A process as described in claim 2, wherein the thickness of the poured and hardened transverse wall is limited so that the ends of the reinforcing mantles situated towards the central regions of the capillaries protrude from the transverse wall.
Claim 3
Dependent Claim
32 words
A process as described in claim 2, wherein the removal of the auxiliary cores from the interior of the capillaries is carried out before introduction of the capillaries into the separating agent.
Claim 4
Dependent Claim
27 words
A process as described in claim 2, wherein the removal of the auxiliary cores from the capillaries is carried out after the hardening of the poured layer.
Claim 5
Dependent Claim
22 words
A process as described in claim 5, wherein the auxiliary cores are melted and thereby removed from the interior of the capillaries.
Claim 6
Dependent Claim
54 words
A process as described in claim 3, wherein, at the time of introducing said capillaries into said separating agent in said casting mold, a frame is also placed in said mold about said bundle of capillaries, which frame is subsequently embedded in said layer of poured-on hardenable material, together with said capillary reinforcing mantles.
Claim 7
Dependent Claim
33 words
A process as described in claim 3, wherein spacers are disposed between the capillaries of the bundle at least until the said layer of hardenable material has been poured onto said separating agent.
Claim 8
Dependent Claim
46 words
A process as described in claim 3, wherein spacers are disposed between the capillaries of the bundle and remain in position even after said layer of hardenable material has been poured on, said spacers being permanently connected with said layer by the hardening of the latter.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |