Cushman Darby & Cushman IP Group of Pillsbury Madison & Sutro LLP
Air-fuel ratio sensor
 An air-fuel ratio sensor comprises an oxygen concentration sensing element, a housing for holding this oxygen concentration sensing element, and protecting covers with gas holes. The protecting covers comprises an inside cover disposed closely to the oxygen concentration sensing element, and an outside cover surrounding the outside cover. Flange-like peripheral portions, formed on the protecting covers, are fixed to the abutting face of the housing by a caulking operation. These flange-like peripheral portions are disposed alternately along a same closed curve around the oxygen concentration sensing element, so that they are not overlapped with each other. 
Denso Corporation
G
G01N
inventional
Takashi Toshimi Koji Minoru Makoto Masahiro Hirokazu
Kojima Miyamoto Shiozawa Ohta Hori Hamaya Yamada