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:
Dec. 09, 2014
Filed:
Aug. 14, 2009
Tomoyuki Saito, Kasumigaura, JP;
Hiroyuki Kamata, Tsuchiura, JP;
Hiroki Sugawara, Kasumigaura, JP;
Toshihiro Abe, Tsukuba, JP;
Shohei Kamiya, Kasumigaura, JP;
Tomoyuki Saito, Kasumigaura, JP;
Hiroyuki Kamata, Tsuchiura, JP;
Hiroki Sugawara, Kasumigaura, JP;
Toshihiro Abe, Tsukuba, JP;
Shohei Kamiya, Kasumigaura, JP;
Hitachi Construction Machinery Co, Ltd., Tokyo, JP;
Abstract
Front and rear side flange portions of a filter accommodating cylinder are provided with positioning pins. A flange portion of an upstream cylinder is provided with a notched groove and a flange portion of a downstream cylinder is provided with a notched groove. In consequence, when the filter accommodating cylinder is connected between the upstream cylinder and the downstream cylinder, each of the positioning pins disposed at the front and rear flange portions is engaged with each notched groove of the upstream cylinder and the downstream cylinder. The filter accommodating cylinder can be positioned to be coaxial with the upstream cylinder and the downstream cylinder. As a result, after performing a cleaning operation to a DPF, an operation of once again connecting the filter accommodating cylinder between the upstream cylinder and the downstream cylinder can be quickly and easily performed.