Tamper

US9487924B2 · kind B2 · utility

Assignee

• Joseph Voegele AG · DE

Inventors

• Klaus Bertz · Dittelsheim-Heßloch, DE
• Ralf Weiser · Ladenburg, DE

Key dates

• Filing date: Jan 6, 2015
• Grant date: Nov 8, 2016
• Expiry date: Jan 10, 2035

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01C19/38
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A tamper of a screed includes a tamper bar secured to a connecting rod in which an eccentric bushing is rotatable. The eccentric bushing is adapted to be rotationally displaced on an eccentric section of a drive shaft relative to the eccentric section and to be rotationally coupled with the eccentric section at relative rotational positions defining different stroke lengths of the tamper bar. A changeover between the rotational positions is accomplishable by a reversal of the direction of rotation of the drive shaft. The eccentric bushing is adapted to be locked at each respective rotational position by means of a locking and/or coupling device against inadvertent displacement from the respective rotational position. The locking and/or coupling device is adapted to be released and/or engaged automatically or by remote control for effecting a changeover from one rotational position to the next.