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:
Nov. 25, 2008
Filed:
Mar. 04, 2005
Eiji Fujioka, Kariya, JP;
Manabu Kato, Kariya, JP;
Eiji Fujioka, Kariya, JP;
Manabu Kato, Kariya, JP;
Aisin Seiki Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A receiving antenna RA of a receiving unit RU is positioned at an inner diameter side of a rotation locus of a transmitting unit TU when a tire T rotates. Consequently, it shortens a reaching distance of electromagnetic waves and lessens its change, thereby making it easy to keep a stable receiving sensitivity state. Moreover, the receiving antenna RA is made of a wire of a predetermined length that is made integral inside a wire harness WH connected to the receiving unit RU. Consequently, it becomes easy to make the receiving antenna RA in a length of λ/4 of a wavelength λ of the electromagnetic waves in use, a length of an integral multiple thereof, or ⅝λ. As a result, the receiving sensitivity can be improved.