Heating cartridge with coupling element
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United States of America Patent
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Apr 23, 2013
Grant Date -
Nov 27, 2008
app pub date -
May 21, 2008
filing date -
May 22, 2007
priority date (Note) -
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Abstract
A heating cartridge is intended especially for a thermostatic working valve. The cartridge is provided with a resistance wire winding (3), which is wound on a winding support (2) and is embedded in an insulating material filling (5) in a metal sheathing (7). The metal sheathing (7) is provided at one end (6) with a dimensionally stable coupling element (8) manufactured from a plastic, in which connecting lines (17, 18) are arranged, which electrically connect pluggable contact elements, especially pins (9, 10) of a connector plug, to the ends of the resistance wire winding (3). To simplify the manufacture and to obtain a compact design, the connecting lines (17, 18) are rigidly seated in the coupling element (8). The coupling element (8) is designed as a connector plug (8/1) and/or holder (8/2) and it has a connection section (28a, 28b, 28c), which protrudes into the open end of the metal sheathing (7) and which is fastened in the metal sheathing (7) in a non-positive and/or positive-locking manner by preferably radial pressing and forms a dimensionally stable structural unit with same.
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