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. 12, 1978
Filed:
Jul. 25, 1977
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23Q / ;
U.S. Cl.
CPC ...
269 73 ;
Abstract
A precision table for a machine tool or the like, which table mounts a workpiece and is adapted to be selectively moved or slid in two directions by a low viscosity bearing such as an externally pressurized air bearing. The bearing includes at least one guide of a substantially J-shaped cross-sectional configuration with a jet arrangement being provided within the guide for jetting a pressurized gas through at least one orifice toward at least one internal surface of the guide. The jet arrangement is disposed within the guide which is fixedly arranged on a flat surface of a bed so that the table is supported by an air film in a clearance between the jet arrangement and portions of the guide.