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:
Jul. 14, 2026
Filed:
Aug. 18, 2023
Komatsu Ltd., Tokyo, JP;
Mitsuyoshi Kimura, Tokyo, JP;
Tatsuya Yoshida, Tokyo, JP;
KOMATSU LTD., Tokyo, JP;
Abstract
A reducing agent supply device includes a tank configured to store a reducing agent to be supplied into an exhaust pipe of an engine, pressure-feeding means configured to pressure-feed the reducing agent in the tank, a reducing agent supply channel through which the pressure-fed reducing agent is supplied, an injection nozzle configured to inject, into the exhaust pipe, the reducing agent supplied through the reducing agent supply channel, retraction means configured to retract the reducing agent in the reducing agent supply channel back to a tank side, and a control device configured to control operation of the pressure-feeding means, the injection nozzle, and the retraction means, and the control device causes the injection nozzle to repeat a switching operation in a predetermined cycle while the retraction means is being operated.