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
Systems and/or methods for determining item serial number structure and intelligence
Superconducting magnetizer
Control device with adjusting pulse width modulation function and the backlight module thereof
Fire detector
Controller for machine tool and five-axis simultaneous control machine tool controlled thereby
Metal halide lamps with fast run-up and methods of operating the same
Decision management system and method
  Randomly Featured Patents
Error correction apparatus and solid state image capturing apparatus using the same
Trifluoromethyl dibenzo[a,c]phenazines as immune regulants
Electronic still camera
Image forming apparatus having a charging member with plural charging modes
Semiconductor device and method for fabricating the same
Sintering aid for lanthanum chromite refractories
Drilling vessel device
Signalling device for scuba divers
Method and device for operating an electrical supercharger
CVD diamond for coating twist drills