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:
Feb. 13, 2001
Filed:
Oct. 08, 1999
Applicant:
Inventor:
Hiroyuki Ohashi, Tokyo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21F 1/00 ;
U.S. Cl.
CPC ...
E21F 1/00 ;
Abstract
A system and method are disclosed for controlling ventilation in a tunnel. According to the disclosed system and method, a set speed value for each vehicle traveling in the tunnel is determined based on the measured level of a physical phenomenon in the tunnel. The set speed value is communicated to each vehicle traveling in the tunnel and/or utilized to control a tunnel ventilator.