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. 28, 2015
Filed:
Nov. 09, 2007
Keigo Yamamoto, Tokyo, JP;
Masaji Iida, Tokyo, JP;
Toshiya Suzuki, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
It is an object to ease discomfort feeling caused by ear fullness for passengers of an elevator. An air pressure control devicecontrols an air pressure in an elevator carusing an air pressure adjusting devicesuch as a blower, an air compressor, etc. In the air pressure control device, a departure/arrival control unitlargely changes the air pressure in the elevator carin the first period which is a time zone at the time of departing from a departure floor (or at the time of arriving at an arrival floor), and an except departure/arrival control unitslightly changes the air pressure in the elevator carin the subsequent second period (or in a time period until arrival). By this 2-step air pressure control, the passenger is prompted to clear the ear in a short time T, the ear fullness is resolved by the ear clearing, and thereafter, the passenger can ascend/descend with the elevator carcomfortably until arriving at the arrival floor.