US3650870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous manufacture of capillary blocks
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1969-09-03
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Granted: 1972-03-21
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Expires: 1989-09-03
Abstract
Abstract A process for the continuous production of block materials containing capillaries in side-by-side relationship comprising producing a plurality of capillary tubes having longitudinal axes adhering the tubes together to form a capillary web, drawing off said web, cutting said web transversely of said axes at predetermined intervals, to form relatively shallow web pieces having flat faces, placing said pieces with the faces in contact with one another affixing said pieces to one another to form a continuous block.
Inventors
- 👤 Hans-Joachim Dietzsch
- 👤 Otto Dietzsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:28
CPC Classifications
B; B29; B29C; B29C66/00; B29C65/00; B29C65/02; B29C65/18; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5227; B29C69/00; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/05; B29C48/09; B29C48/10; B29C65/04; B29C65/14; B29C65/1403; B29C65/1412; B29C65/1429; B29C65/1448; B29C65/22; B29C65/221; B29C65/222; B29C65/48; B29C65/52; B29C65/522; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/70; B29C66/71; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
30 words
A process according to claim 1 wherein said capillaries are produced from thermoplastic material by melt spinning and are applied directly and continuously to means for drawing off said web.
Claim 2
Dependent Claim
34 words
A process according to claim 2 including issuing said material from an annular opening in a spinneret, causing a filling gas to issue from the center of said opening, whereby said capillary is formed.
Claim 3
Dependent Claim
34 words
A process according to claim 1 including drawing off said web by a first drawoff means which conveys said web substantially continuously, then passing said web through a second intermittent drawoff means before cutting.
Claim 4
Dependent Claim
21 words
A process according to claim 2 wherein said tubes are produced from spinnerets substantially arranged in the form of said web.
Claim 5
Dependent Claim
21 words
A process according to claim 1 wherein said adhering includes applying a bonding agent to the outside walls of said tubes.
Claim 6
Dependent Claim
16 words
A process according to claim 6 wherein said bonding agent is applied by spray or roller.
Claim 7
Dependent Claim
110 words
A process according to claim 6 wherein said bonding agent is applied by being formed simultaneously with said tubes as an outer layer thereof, said capillary tubes being produced from thermoplastic material by melt spinning, said material being fed into a first feed chamber of at least one spinneret and issuing from a first annular opening therein, said opening having a filling gas issuing from the center thereof, said bonding agent fed into a second feed chamber in said spinneret, a second annular opening in communication with said second chamber, said second opening surrounding said first opening, said agent issuing from said second opening and thereby coating said capillary tubes.
Claim 8
Dependent Claim
14 words
A process according to claim 1 including heating said pieces to effect bonding thereof.
Claim 9
Dependent Claim
16 words
A process according to claim 9 wherein said heating is by dielectric loss or infra-red radiation.
Claim 10
Dependent Claim
14 words
A process according to claim 1 wherein said sealing also fuses said tubes together.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |