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:
Apr. 16, 2013
Filed:
Mar. 26, 2009
Tomoyuki Saito, Kasumigaura, JP;
Toshihiro Abe, Tsukuba, JP;
Hiroyuki Kamata, Tsuchiura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
An hydraulic excavator is provided with an exhaust gas treatment apparatus in an exhaust pipe for effecting the purification treatment of exhaust gas including capturing the particulate matter in the exhaust gas. A space provided for mounting and removing a filter accommodating cylinder () is formed between the upstream cylinder () and the downstream cylinder (). In particular, upwardly inclined connecting surfaces (E andE) are provided on flange portions of upstream and downstream cylinders (and), respectively, and downwardly inclined connecting surfaces (F andG) are provided on upstream side flange portions of filter accommodating cylinder (). In consequence, a substantially V-shaped insertion space (S) which is gradually enlarged from a lower side to an upper side can be formed between the upstream cylinder () and the downstream cylinder ().