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. 24, 2024
Filed:
Mar. 19, 2020
Walter Ag, Tubingen, DE;
Jurgen Birk, Tubingen, DE;
Walter AG, Tubingen, DE;
Abstract
The present invention relates to a thread former for manufacturing an internal thread in a metal workpiece. The thread former includes a forming section having a common central axis of rotation, wherein the forming section has a plurality of lubrication grooves extending parallel to the axis of rotation. The forming section includes a plurality of ridge sections extending along a circumference of the forming section, the plurality of ridge sections being arranged for forming the internal thread in the metal workpiece, and wherein, in a circumferential direction, each two of the plurality of ridge sections are separated by one of the plurality of lubrication grooves. At least the one of the lubrication grooves, when projected into a projection plane perpendicular to the axis of rotation, is asymmetrical with respect to any radius intersecting a surface of the lubrication groove.