The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2001
Filed:
Sep. 24, 1998
Isao Watanabe, Nagoya, JP;
Masanori Fukutani, Nagoya, JP;
Nobuyuki Tsuji, Aichi, JP;
Minoru Ohta, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
An air fuel ratio sensor for use in an exhaust gas purification system for an internal combustion engine. The sensor has an outer and inner cover,and,for protection of lead wires,and,to a detecting element,and a heater of the sensor, a rubber seal,for obtaining a seal between the covers and the lead wires and a water repellent filter,for obtaining a seal between the inner and outer covers,and,, while keeping an air ventilation capability of the space inside the covers. For receiving the lead wires,and,, the seal,is formed with holes,such that the minimum thickness between the hole and an outer surface of the seal is 1 mm or more. A crimping of the outer cover,is done so that a deformation of the seal,in a range between 10 to 20% of the outer diameter is obtained. A crimping of the outer cover,is further done at a first section,A at a larger force for fixation of the outer cover,to the inner cover,and at a second section,B at a smaller force for holding the water repellent filter,between the outer and inner covers. In the crimping, the crimping at the first section is completed simultaneously with or earlier than the completion of the crimping at the second section.