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. 06, 2003
Filed:
Jul. 13, 2001
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
Fluid heating devices may be utilized, for example, to heat a vehicle coolant and may include a rotor body rotatably supported within a rotor housing. A plurality of blades may be disposed on a circumferential surface of the rotor body and a channel may be defined between each two adjacent blades. Each channel has a base portion, an inner circumferential end and an outer circumferential end. Preferably, the inner circumferential end is longer than the outer circumferential end as measured from the base portion. Further, the outer circumferential ends of the channels may define wall portions and the wall portions are preferably shorter than the inner circumferential ends as measured from the base portions of the channels. In view of this design, it is not necessary to provide shields toward the outer circumferential ends of the channels.