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:
Dec. 17, 2013
Filed:
Sep. 13, 2010
Shoji Uchimura, Toyokawa, JP;
Mamoru Ito, Toyokawa, JP;
Shoji Uchimura, Toyokawa, JP;
Mamoru Ito, Toyokawa, JP;
Sintokogio Ltd., Aichi, JP;
Abstract
A static-pressure bearing apparatus that prevents vibrations, the apparatus including an orifice and a vent groove, such that a laminar-flow status may be maintained in the entire region of the routes of the ventilated pressurized gas. A stage equipped with the static-pressure bearing apparatus is also provided. The configurations, such as the shapes of the orifice, vent groove, and the exhaust groove, of the static-pressure bearing apparatus, are designed such that a laminar flow may be maintained in the entire region of the routes for ventilation of the pressurized gas. The vent groovecomprises the circular grooveand a plurality of distributing grooves. The vent grooveis formed to be symmetrical about the centerline of the direction that the moving bodymoves. The circular grooveis formed as a circle to surround the orifice. The plurality of distributing groovesextend radially from the orificeto the circular groovesuch that the plurality of distributing groovesconnect the circular grooveand the orifice