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. 29, 1981
Filed:
Aug. 24, 1979
Hans Krapfenbauer, Zurich, CH;
Firma Ernst Grob, Mannedorf, CH;
Abstract
A cold rolling method wherein the workpiece is advanced along its lengthwise axis and rotated in pulsating fashion, in accordance with a sinusoidal-like rotational speed-time diagram, while its surface is machined during briefly effective individual rolling or generating operations by means of generating rolls seated in roller or rolling heads. Each rolling operation is accomplished when the rotational speed of the workpiece is at the lower reversal region of the aforementioned diagram. The cold rolling machine comprises a worm gear for rotating the workpiece together with its clamping or chucking device, the worm gear being seated upon the chucking device. The related worm is mounted in a displaceable carriage. This carriage is moved to-and-fro by an eccentric drive or equivalent structure, and the action of the worm is superimposed upon the worm gear and there is formed the sinusoidal-like course of the rotational speed as a function of time.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile