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

Image Number 5 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
Method and apparatus for verifiable generation of public keys
Management of temporal data by means of a canonical schema
Low-staining room temperature curable coating composition
Systems and methods for redox flow battery scalable modular reactant storage
Method or system for investing and/or trading
Personalized location information for mobile devices
  Randomly Featured Patents
Copy sheet deflector for an electrophotographic copier
Computer with automatic mapping of memory contents into machine registers during program execution
System for testing liquid crystal and end seal of LCD cell
Color moviola for two-track VTR
Apparatus and method for assembling a gas turbine stator
AC-DC converter adding an offset signal to an inductor current signal
Cutting and collating sheets of paper
Optical analysis apparatus and particle counting method
Pervaporation process of separating a liquid mixture