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. 01, 2005
Filed:
Mar. 04, 2004
Kenji Kobayashi, Kudamatsu, JP;
Tomoyuki Shibuya, Kudamatsu, JP;
Kenji Kobayashi, Kudamatsu, JP;
Tomoyuki Shibuya, Kudamatsu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When a vehicle approaches a station, this is detected by means of spot detection and vehicle velocity detection, and operation of a ventilator is slowed down or stopped when the vehicle is at a stop at the station. This allows the numbers of revolutions of an indoor blower, an outdoor blower and a compressor of an air conditioner to be reduced by half, with the heat load being reduced by half. This operation control can reduce the powers of sound sources constituting the interior noise, thereby reducing the interior noise.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile