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:
Aug. 16, 1983
Filed:
Mar. 20, 1981
Robert A Holdahl, Hopkins, MN (US);
Paul S Petersen, Minnetonka, MN (US);
Toolmark Co., Minneapolis, MN (US);
Abstract
A lathe work center device centers a workpiece about an axis of rotation on a lathe. The lathe has two tool centers with at least one tool center being driven and both tool centers coaxially positioned about the axis of rotation. The work center device includes a substantially flat main ring portion having an outer periphery. A plurality of spurs integral with the main ring portion project toward and are embedded within the workpiece. The spurs are positioned on a side of the ring portion that is adjacent to the workpiece, proximate the outer periphery. A centering portion integral with the main ring portion projects outwardly therefrom on a side of the main ring portion opposite the spurs. Preferably, the centering portion has a frusto conical configuration and engages the tip of a tool center, locating the workpiece about the axis of rotation. A plurality of lugs proximate the outer periphery engage cooperating slots in the driven tool center for rotating the workpiece.