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:
Sep. 10, 2024
Filed:
Oct. 08, 2020
Ntn Corporation, Osaka, JP;
Takayuki Kawamura, Mie, JP;
Ryouta Kondou, Mie, JP;
Makoto Seki, Shizuoka, JP;
Susumu Yamaji, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
To provide an axle bearing having a low torque property and superior bearing lifetime. A hub bearingis configured to rotatably support a wheel of a vehicle, and has a grease compositionsealed in an inner space thereof. The grease compositioncontains a base oil and a thickener. The shear stress of the grease composition at the shear rate of 1,000-10,000 sat 25° C. is 3,000 Pa or less. The viscosity of the grease composition is 1 Pas or less. The yield stress of the grease composition at 25° C. measured by a dynamic viscoelasticity analysis method using a rheometer is 1,300-3,000 Pa.