Patent ID: 11913676
Assignee: EBERSPäCHER CATEM GMBH & CO. KG
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  H | IPC F  H

Claim 10:
11. A PTC heating element for an electric heating device, comprising:
a casing that joins, as a unit, at least one PTC element, conductor paths that are electrically connected to the PTC element, and insulating layers that bear against the PTC element in a heat-conductive manner; and
contact strips which project over the PTC element and which are electrically conductively connected to the conductor paths for energizing the PTC element with different polarities; wherein
the casing comprises at least one reinforcement that holds at least two of PTC element, conductor path, and insulating layer in a prestressed manner in abutment against each other in the casing; and wherein
the at least one reinforcement is formed by a spherical configuration of oppositely disposed main side walls of the casing, the inner surfaces of which, in a cross-sectional view of the casing, are flat and bear against the PTC element and which the main side walls, in a cross-sectional view of the casing, are thicker at the center of the PTC element than at the edge of the PTC element.