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:
Jun. 03, 2025
Filed:
Nov. 12, 2020
Fives Landis Limited, Keighley, GB;
Fives Landis Limited, Keighley, GB;
Abstract
A workpiece holding assembly comprises a magnetic chuck, and first and second separate sets of workrests for engaging with the outer circumferential surface of an annular workpiece. The workrests are configurable such that when the outer circumferential surface of the workpiece is ground with the chuck rotating in one direction, the outer circumferential surface is only urged in contact with the first set of workrests, and when an inner circumferential surface of said workpiece is ground with the direction of rotation of the chuck reversed, the outer circumferential surface is only urged in contact with the second set of workrests. Grinding methods using such a workpiece holding assembly are also described.