Multi-layer heating element

US20070221647A1Inactive Publication Date: 2007-09-27FEDERAL MOGUL WORLD WIDE
5 Cites 9 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
FEDERAL MOGUL WORLD WIDE
Publication Date
2007-09-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A heating element and, in particular, a ceramic heating element, such as ceramic heating elements used in high temperature glow plugs for diesel engines and gas igniters. The heating element includes an electrical insulator and an electrically conductive layer. The conductive layer is formed from a single material and single composition. The method of manufacture includes the steps of forming the insulative layer and molding a conductive layer around the insulative layer.
Need to check novelty before this filing date? Find Prior Art

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Application Ser. No. 60 / 785,334, filed Mar. 23, 2006 which is incorporated herein by reference.BACKGROUND OF THE INVENTION

[0002] The present invention relates to a heating element and, in particular, a ceramic heating element, such as ceramic heating elements used in high temperature glow plugs for diesel engines and gas igniters, and methods of manufacture therefore.

[0003] Ceramic heating elements, such as the glow plug illustrated in FIG. 1, are well known in the industry. As illustrated in FIG. 1, a glow plug 2 typically includes a heating element having an electrically conducting core 8 surrounded by an electrically insulative layer 6. The insulative layer 6 is in turn surrounded by an outer resistive layer 4 which makes contact with the conducting core 8 at the electrical connection area 9. To manufacture the glow plug 2, illustrated in FIG. 1, the layered structure is formed b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More