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:
Mar. 31, 2026
Filed:
Nov. 10, 2023
Disco Corporation, Tokyo, JP;
Koji Watanabe, Tokyo, JP;
DISCO CORPORATION, Tokyo, JP;
Abstract
A spindle unit includes a casing defining a spindle housing space, a spindle housed in the spindle housing space with a gap from an inner wall of the casing and has a first large-diameter part and a second large-diameter part separated from the first large-diameter part in the axial direction, a motor coupled to a base end part of the spindle, a high-pressure air source, and a valve between the air source and an air supply path. When the valve is opened to introduce high-pressure air into the gap and the motor is rotated and the rotation speed of the spindle becomes equal to or higher than a predetermined rotation speed, the controller closes the valve to interrupt supply of the high-pressure air into the gap and the spindle is rotatably supported by a dynamic pressure air bearing enclosed in the gap and is dragged by the spindle's rotation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile