Gear drives with direction of rotation reversal

US4117739A · kind A · utility

Assignee

• Triumph Werke Nurnberg A.G.

Inventors

• Heinz Meier · Hohenhausen, DE
• Egon Zurawski · Berlin, DE
• Paul Greppmaier · Nuremberg, DE

Key dates

• Filing date: Oct 13, 1977
• Grant date: Oct 3, 1978
• Expiry date: Oct 13, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19874
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A uni-directionally rotated clutched driving gear having arcuate segments of gear teeth acts sequentially on two idler gears to effect a two-speed bi-directional rotation of a driven gear. The driven gear may be attached to the drive shaft of the character wheels in a recording calculator.