Torque-transmitting arrangement

US6612588B2 · kind B2 · utility

Assignee

• Hilti Aktiengesellschaft · LI

Inventors

• Peter Ostermeier · Dießen, DE
• Wolfgang Erdt · Martinsried, DE
• Peter Ehe · Gmunden, AT
• Marcus Flock · Achstetten, DE

Key dates

• Filing date: Nov 2, 2001
• Grant date: Sep 2, 2003
• Expiry date: Nov 2, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T279/17863
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

An arrangement for transmitting a torque from a power tool to a working tool and including a shank forming part of the working tool and having following one another, in the operational direction of the working tool, first, second, third, and fourth regions (B1, B2, B3, B4), at least two drive grooves (3) extending parallel to a working tool axis over all of the shank regions (B1, B2, B3, B4), and at least one additional drive groove (4) extending in third and fourth regions (B3, B4) of the shank (2), with the arrangement further including a chuck (10) having an opening (13) for receiving the shank (2), at least one locking element (21) projecting into the receiving groove (13) for engagement into the circumferential groove (5) of the shank (2), at least two drive dogs (16) and an additional drive dog projecting into the receiving groove (13) for engagement in the first drive grooves (3) and the at least one additional drive groove (4).