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:
Jun. 06, 2000
Filed:
Mar. 19, 1998
Yoshiharu Inaguma, Nagoya, JP;
Kazuhisa Sugiyama, Okazaki, JP;
Toyoda Koki Kabushiki Kaisha, Kariya, JP;
Abstract
A hydraulic bearing device includes a cylindrical bearing metal, a groove-like pocket, a dynamic pressure generation land, a fluid flowing space and an oil supply hole. The cylindrical bearing metal supports a rotating shaft. The pocket is formed in an inner peripheral surface of the bearing metal. The pocket defines the dynamic pressure generation land. The fluid flowing space is formed in the dynamic pressure generation land. The oil supply hole supplies fluid from a fluid pressure source to the pocket and the fluid flowing space. The dynamic pressure generation land which has been heated due to fluid friction is cooled by the fluid passing through the fluid flowing space formed in the dynamic pressure generation land. It is thus possible to inhibit thermal expansion of the hydraulic bearing device, especially the dynamic pressure generation land.