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:
Mar. 19, 2019
Filed:
Jan. 19, 2016
Hitachi Construction Machinery Co., Ltd., Bunkyo-ku, Tokyo, JP;
Hitoshi Nishiguchi, Tsuchiura, JP;
Tomoyuki Saito, Tsuchiura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
An expansion tank, while maintaining gas-liquid separation performance of coolant circulating through an engine cooling apparatus, can absorb pressure variations occurring with volume change of the coolant even when an excessive amount of coolant is supplied. A bulkheadpartitions an expansion tankinto separate chambers Rto Rthat communicate with each other via a first communication holepositioned lower than a FULL line. The separate chambers Rto Rthat constitute a separate chamber group X communicate with each other via a third communication holepositioned higher than the FULL line. The separate chambers Rto Rthat constitute a separate chamber group Y communicate with each other via a fourth communication holepositioned higher than the FULL line. The separate chamber Rand the separate chamber Rcommunicate with each other via a second communication holedisposed at the height of the FULL line.