Device for balancing of a radial threaded spindle eccentricity of a spindle drive

US6959620B2 · kind B2 · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Ralf Allner · Eßlingen, DE
• Thomas Biber · Aalen, DE

Key dates

• Filing date: Dec 10, 2001
• Grant date: Nov 1, 2005
• Expiry date: Dec 27, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/1868
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A device for balancing eccentricity of a spindle drive (1) to avoid blocking of the spindle drive during lifting movement of a platform (2), in which the platform is mounted on several axiparallel spindles (G1; G2; G3; G4) by bearing devices (L1; L2; L3; L4) arranged on it and can be lifted together with the bearing devices axially along the spindle. The spindle drive (1) has at least three axiparallel, rotatable threaded spindles (G1; G2; G3; G4) with bearing device (L1; L2; L3; L4) in a polygonal arrangement; low-friction bearing devices (L1; L2; L3; L4) with radial bearing clearance (F1; F2) are arranged to balance the radial eccentricity of the rotating threaded spindles so that a relative radial movement of the rotating spindles to platform (2) is possible with limited force expenditure.