Temperature sensor and heating device for hot runner systems

Details Temperature sensor and heating device for hot runner systems Temperature sensor and heating device for hot runner systems

2005-05-24

2005-05-24

Evans, Robin O. (Department: 3742)

Electric heating

Heating devices

With heating unit structure

C219S424000, C219S426000, C425S549000, C425S572000

Reexamination Certificate

active

06897418

ABSTRACT:
A temperature sensor for use in hot runner systems includes a resistive element which is connectable via contacting means to a control circuit for a heating device and which includes at least one element portion of larger electrical resistance than its remaining portions, preferably larger by a factor of 2 to 100. The resistive element portions may form U-shaped bows or loops or may be meandering. Two resistive tracks above one another are separated by insulating layers, e.g. ceramic dielectric layers. The resistive element portions may consist of different materials. In connection with a heating device, the temperature sensor is located on or in the body of a manifold or a nozzle, with meandering and/or bifilar heating conductors whose electrical resistance in the middle is smaller than in the top and bottom regions. The temperature sensor portion is tightly enclosed in a zone of high resistance by adjacent heating conductors. A dielectric layer may be undetachably fixed to the manifold or nozzle body and after firing, be under compressive pretension relative to the body.

REFERENCES:
patent: 5202665 (1993-04-01), Hafele
patent: 5332991 (1994-07-01), Kojima et al.
patent: 5406246 (1995-04-01), Friese et al.
patent: 5436494 (1995-07-01), Moslehi
patent: 5973296 (1999-10-01), Juliano et al.
patent: 6022210 (2000-02-01), Gunther
patent: 6140906 (2000-10-01), Kaihara et al.
patent: 6287439 (2001-09-01), Kato et al.
patent: 6805549 (2004-10-01), Günther
patent: 20100840 (2001-01-01), None
patent: 19941038 (2001-03-01), None
patent: 10004072 (2001-10-01), None
patent: 927617 (1999-07-01), None

Affiliated with

Also associated with

Rating

Temperature sensor and heating device for hot runner systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Temperature sensor and heating device for hot runner systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature sensor and heating device for hot runner systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3380733