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:
Apr. 24, 2001
Filed:
Apr. 26, 1999
Applicant:
Inventors:
Kenichiro Nishi, Kanagawa, JP;
Mitsuru Nukui, Toyama, JP;
Kazuo Nakajima, Toyama, JP;
Shirou Murai, Toyama, JP;
Toyotaka Wada, Toyama, JP;
Assignee:
Nippei Toyama Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 ; B24B 5/100 ;
U.S. Cl.
CPC ...
B24B 1/00 ; B24B 5/100 ;
Abstract
A spindle,of a grinding wheel,is rotatively borne by a bench,for the grinding wheel through hydrostatic thrust bearings,and,. A pressure regulator,for regulating the pressure which must be supplied to at least either of supply ports,and,opposite to each other in the direction of the axial line of the spindle,in the hydrostatic thrust bearings,and,is provided. The pressure regulator,has a changing member for changing a passage for choking the fluid and the length of the choking passage.