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:
Nov. 16, 1999
Filed:
Aug. 06, 1998
Applicant:
Inventors:
Yasushi Fujita, Wako, JP;
Hiroshi Kasai, Wako, JP;
Hiroshi Watanabe, Wako, JP;
Naoki Ebihara, Wako, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60307 ;
Abstract
An exhaust emission control apparatus for a general-purpose internal combustion engine comprises an exhaust passage allowing passage of an exhaust gas therethrough and having a ternary catalyst, and an air pump for supplying a secondary air to the exhaust passage. The air pump is driven by rotation of a camshaft having a cam for opening and closing an exhaust or intake valve of the internal combustion engine. The drive of the air pump is effected by a pump rocker arm disposed between the cam and a pump shaft of the air pump.