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:
Jan. 07, 2003
Filed:
May. 03, 2001
Takayuki Narita, Shimosuwa-machi, JP;
Sankyo Seiki Mfg. Co., Ltd., Nagano, JP;
Abstract
The invention is a hydrodynamic bearing device including a shaft member having a dynamic pressure generating surface rotatably attached to a cylindrical bearing sleeve having a dynamic pressure generating surface, with a gap between the attached dynamic pressure generating surfaces being filled with a lubricant. To prevent the lubricant from leaking, a covering member is fixed by adhesive to one of the openings of the bearing sleeve. A two-part liquid epoxy resin is applied to seal a gap in a joining portion between the bearing sleeve and the covering member. The adhesive satisfies the condition, n/2≦m≦2n, where m is the molecular-weight of a primary agent and n is the molecular-weight of a curing agent.