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:
Aug. 11, 1998
Filed:
Jan. 23, 1997
Hirofumi Watanabe, Hiroshima, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
Cooling air is drawn in from only a lower opening formed in an upper rotating structure, and control valves for controlling hydraulic actuators are disposed in the flow path of the cooling air. A clearance is formed between an upright plate which is a part of a frame of the upper rotating structure and a side of a hydraulic oil tank which faces the central portion of the upper rotating structure. The clearance is located above the lower opening, so that the cooling air flows along the side face of the hydraulic oil tank. Fixed to the side face of the hydraulic oil tank is a valve stand, and control valves are attached to the valve stand. Thus, the construction is simple and the outside air can be readily drawn into the structure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile