IT1205175B - Modified poly-di:methyl-phenylene prepn. - Google Patents
Modified poly-di:methyl-phenylene prepn.Info
- Publication number
- IT1205175B IT1205175B IT20999/87A IT2099987A IT1205175B IT 1205175 B IT1205175 B IT 1205175B IT 20999/87 A IT20999/87 A IT 20999/87A IT 2099987 A IT2099987 A IT 2099987A IT 1205175 B IT1205175 B IT 1205175B
- Authority
- IT
- Italy
- Prior art keywords
- core
- wire
- secured
- spigots
- channel
- Prior art date
Links
- 239000012530 fluid Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Landscapes
- Resistance Heating (AREA)
Abstract
The electrical immersion heater comprises tubular core units each having an elongate tubular core member (1) which may be provided with fluid through flow apertures. Each core includes a saw tooth profile strip (3a) which locates the wound wire, and is secured by stud fasteners (2) to core (1). Wire retaining slots (3) are provided at the ends of the strips (3a). A polymer insulated electrical resistance heating wire (5) is wound helically around the core (1) in a single layer. The core windings comprise a single length of resistance wire and the end feeds (4 and 6) connect with a shrouded supply cable (7). Side members (8 and 9) are of channel form with a central plateau (10) also forming a channel (10a) carrying spigots (11) each with opposed longitudinal slots (12) and an annular rib (13) arranged such that the spigots may snap-engage with the ends of respective cores to be secured. A number of the modular units described may be coupled together. Simpler adjustment of power rating. Avoids over-heating. @(8pp Dwg.No.1/3)@
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20999/87A IT1205175B (en) | 1987-06-23 | 1987-06-23 | Modified poly-di:methyl-phenylene prepn. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT20999/87A IT1205175B (en) | 1987-06-23 | 1987-06-23 | Modified poly-di:methyl-phenylene prepn. |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8720999A0 IT8720999A0 (en) | 1987-06-23 |
IT1205175B true IT1205175B (en) | 1989-03-15 |
Family
ID=11175208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT20999/87A IT1205175B (en) | 1987-06-23 | 1987-06-23 | Modified poly-di:methyl-phenylene prepn. |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1205175B (en) |
-
1987
- 1987-06-23 IT IT20999/87A patent/IT1205175B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8720999A0 (en) | 1987-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19930617 |