Electric heating elements

An electric resistance heating element, comprising:

• a plurality of dielectric cores each having a plurality of openings extending longitudinally therethrough, said cores being adapted for longitudinal alignment with at least certain of their openings longitudinally aligned,
• a plurality of terminal pins in number not exceeding the number of openings in each of said cores, at least certain of said pins fitting within the aligned openings to hold said cores in longitudinal alignment,
• and a resistance wire coil wound on each core, one end of each coil being disposed within a common one of the aligned openings for electrical engagement with the terminal pin fitting therein, and the other end of respective coils being disposed each in a different one of the openings for electrical engagement with respective terminal pins within said different opening.

An electric resistance heating element, comprising:

• a plurality of dielectric cores, each having a plurality of openings extending longitudinally therethrough, said cores being adapted for longitudinal alignment with their openings longitudinally aligned,
• a resistance coil wound on each core, having one end inserted within one core opening at one end of the core and an opposite end inserted within another core opening at the opposite end of the core,
• a plurality of terminal pins in number not exceeding the number of openings in each of said cores, said pins fitting within the longitudinally aligned openings of the longitudinally aligned cores and the openings therein being radially oriented so that one terminal pin is in electrical engagement with each of said one coil end, and so that a different terminal pin is in electrical engagement with a respective one of said opposite coil ends.

An electric resistance heating element, comprising:

• three dielectric cores, each having a plurality of longitudinal openings, said cores being adapted for longitudinal alignment with their openings axially aligned,
• a resistance coil wound on each core, having one end inserted within one core opening at one end of its core and an opposite end inserted with another core opening at the opposite end,
• and a plurality of terminal pins, inserted within selected core openings, said cores being longitudinally aligned with their openings being radially oriented to provide predetermined engagement between coil ends and terminal pins for a three phase connection.