Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1990-05-04
1992-10-20
Reynolds, Bruce A.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219523, 219550, 165164, 165 65, 425143, 425144, H05B 358
Patent
active
051572419
ABSTRACT:
The temperature control device comprises heat transfer shells, each of which consists of two shell sections, each of which consists of a metal casting, in which a single temperature control element is embedded. The temperature control element has been formed from a tubular blank to comprise at least one loop and is formed with locating surfaces, which are exposed to recesses formed in the inside and outside peripheral surfaces of the shell section. Owing to that design the metal castings may be made by die casting under relatively high injection pressures and with a much smaller wall thickness so that the inside peripheral contacting surfaces of the shell sections can much more snugly contact the plasticizing cylinder or the nozzle and a temperature change can be effected at a higher rate.
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Hoang Tu
Reynolds Bruce A.
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