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
Insulin derivative
Testing SQL query writing skills
Apparatus for tuning a musical instrument, and a related instrument
Flame-proofed thermoplastic compositions
Heat retaining device
Software self-checking systems and methods
Constant low-flow air source control system and method
  Randomly Featured Patents
Method for implanting semiconductor conductive layers
Automatic surgical device and control assembly for cutting a cornea
Dispenser including a translatable piston
Self cleaning metering device for diaphragm style flush valve
Tape composition and process for internally constrained sintering of low temperature co-fired ceramic
Reducing ignition risk for activated carbon
Skewed tip hole turbine blade
Telephone number recognition of spoken telephone number in a voice message stored in a voice messaging system
Noise reduction technique for breakdown diodes
System and method for transparent electronic data transfer using error correction to facilitate bandwidth-efficient data recovery