ApplicationNo. 500565 filed on 08/26/1974
US Classes:219/243, Combined with pressure application means156/515, Cutting element simultaneously bonds (e.g., cut seaming)219/241, With thermal control means219/482, With power supply and voltage or current regulation or current control means219/505, Comprising nonlinear or negative temperature coefficient resistance means338/238, Element inpowdered insulation with outer metallic sheath392/498With thermostatic control means
ExaminersPrimary: Albritton, C. L.
AbstractA temperature controlled electric heater for severing a web of vinyl film, which includes a metallic sheath having internal heater elements arranged in a ceramic core and has a thermistor nested in the core and in surface contact with the sheath for sensing the temperature of the heater, the sheath being adapted to heat sever the vinyl film web on contact therewith.
Field of SearchCombined with pressure application means
With thermal control means
With temperature or current control means
Housing, casing, or support insertable into material or space to be heated (e.g., immersion type)
Rigid tubular housing, casing, or support (e.g., flattened tube)
With heating unit structure
With protective means for heater
With power supply and voltage or current regulation or current control means
With heat storage or transfer means