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:
May. 14, 2002
Filed:
Jul. 18, 2001
Masakazu Arita, Kobe, JP;
Minao Yanase, Kobe, JP;
Other;
Abstract
An apparatus for alarming decrease in tire air-pressure which alarms decrease of internal pressure of a tire on the basis of a rotational information. The apparatus comprises rotational information detecting means; memory means for storing the rotational information of each of the tires; calculation processing means for calculating a reciprocal number of a turning radius and calculating a judged value from the rotational information of the respective tires; internal pressure judging means for comparing the judged value with a reference value for the judged value at every regions in right turning regions and left turning regions so as to judge decrease in internal pressure; torque judging means for judging decrease in limited slip differential torque of the limited slip differential device; and updating means for initializing the reference value for updating the reference value. The judgement accuracy can be maintained. Thereby, the erroneous alarm is prevented from being issued and decrease in air-pressure can be judged accurately.