Parkhurst, Wendel & Rossi
Oxygen sensor
 Excellent electrical connection between a female contact and an electrode terminal of an oxygen sensor can be assured for a long period of use even when the oxygen sensor is exposed to vibrations and/or humid atmosphere, by providing an oxygen sensor, comprising electrodes, a sensor element which generates an electromotive force or which changes its electric resistance value between the electrodes depending on oxygen concentration of a gas to be measured, electrode terminals arranged on the sensor element and connected to the electrodes, and a metallic accommodating member accommodating the sensor element, comprising; a female contact electrically connected to the electrode terminal; a ceramic housing electrically insulating the female contact from the metallic accommodating member; a resilient member pressing the ceramic housing; and a caulking ring pressing the resilient member to exhibit its resilient power; the female contact, the ceramic housing, the resilient member and the caulking ring forming a consent device receiving the electrode terminal; the caulking ring being caulked to press the resilient member such that the female contact is pressed and electrically connected to the electrode terminal by a given pressure. 
NGK Insulators, Ltd.
G Y G G
G01N Y10S G01N G01N
inventional additional inventional inventional
Masanori Nobuhide
Katsu Kato