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
Projection illumination system for EUV microlithography
Switching device, switch control method, and storage system
Nonaqueous secondary battery with nitrile group-containing compound
DKK1 oncogene as therapeutic target for cancer and a diagnosing marker
Inspection tool for top guides of a boiling water reactor
Oral care implement accessory
Dose escalation enzyme replacement therapy for treating acid sphingomyelinase deficiency
  Randomly Featured Patents
Installation for spraying a multi-component coating material
S-(N-alkoxycarbonyl, N-substituted)aminomethyl isothiourea derivative
Electromagnetic clutch-brake for industrial sewing machine
Apparatus and method for roll moment equalization at high advance ratios for rotary wing aircraft
Vacuum-operated liquid pump
Slide brackets
Method of making silicate treated asbestos diaphragms for electrolytic cells
Polymeric dyes for antireflective coatings
Ultrasonic Doppler flowmeter with correction for vibratory signals at zero-flow conditions
Radio communication device and arrival direction estimation method