Resources Contact Us Home
Spark plug for internal combustion engine and method of manufacturing the same

Image Number 3 for United States Patent #8115372.

A spark plug for an internal combustion engine, includes: a cylindrical insulating body; a center electrode; a cylindrical metal shell; and a ground electrode, as defined herein, wherein the noble metal tip is bonded to the ground electrode via a molten bond, and when viewed in a cross-section including a center axis of the noble metal tip along a longitudinal direction of the ground electrode, a sum of a cross-sectional area of a base-end-side molten bond (A) positioned at a base end side of the ground electrode and a cross-sectional area of a front-end-side molten bond (B) positioned at a front end side of the ground electrode is equal to or greater than 4 mm.sup.2, and the cross-sectional area of the front-end-side molten bond (B) is 1.1 to 1.3 times greater than that of the base-end-side molten bond (A).

  Recently Added Patents
System and method for extraction of factoids from textual repositories
Optimization of microgrid energy use and distribution
Quality control scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems
Dual head hand rake
Method of operating a compression ignition engine
Transvenous method to induce respiration
Waveform compressing apparatus, waveform decompressing apparatus, and method of producing compressed data
  Randomly Featured Patents
Reducing agent dosing device
Achromatic-type laser scanning optical system
Front panel portion of a paper feed cassette
Image forming apparatus having a first mode for forming a multicolor image of restricted length and a second mode for forming a monocolor image of unrestricted length
Fuel cell system
Common circuit board connectable to multiple alternative single-sided expansion boards
Aluminum alloys having high corrosion resistance after brazing
Polychelants, their complexes with metal ions, their preparation and their uses
Transactions for an application domain manager
Portable data collection device with self identifying probe