Gear for converting a rotary into a translational motion

US4819495A · kind A · utility

Assignee

• Hormann KG Antriebs- und Steuerungstechnik · DE

Inventor

• Michael Hormann · Bodenwerder, DE

Key dates

• Filing date: Jan 30, 1987
• Grant date: Apr 11, 1989
• Expiry date: Jan 30, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19819
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An arrangement for converting rotary motion into translational motion in which a motion-transmission device that is movable translationally, is divided into two strings that move longitudinally along their direction of motion. A driving motor provides rotational motion through a rotary drive. The strings are guided transversely and are positioned outside of a guide where they become separated. The strings, on the other hand, become united inside the guide, and this guide prevents the strings from being movable from each other laterally. The strings have teeth on sides facing each other in vicinity of the guide, and these strings have ends secured to an intermediate component in the guide, remote from the rotary drive. The intermediate component is common to both strings, and they become disengaged in vicinity of the intermediate component.