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
Application number
IT20999/87A
Other languages
Italian (it)
Other versions
IT8720999A0 (en
Inventor
Arnaldo Roggero
Alberto Gandini
Raffaello Sisto
Claudio Valentini
Maria Andrei
Original Assignee
Eniricerche Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eniricerche Spa filed Critical Eniricerche Spa
Priority to IT20999/87A priority Critical patent/IT1205175B/en
Publication of IT8720999A0 publication Critical patent/IT8720999A0/en
Application granted granted Critical
Publication of IT1205175B publication Critical patent/IT1205175B/en

Links

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)@
IT20999/87A 1987-06-23 1987-06-23 Modified poly-di:methyl-phenylene prepn. IT1205175B (en)

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)

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