Patent · US Active

Self-propelled construction machine

US8944517B2 · kind B2 · utility

9Cited by

9References

20Claims

0Family size

Assignee

Wirtgen GmbH

Inventors

Dirk Franzmann · Hennef (Sieg), DE
Christian Berning · Euskirchen, DE
Herbert Ley · Wellsboro, US
Cyrus Barimani · Rübhausen, DE
Günter Hähn · Rübhausen, DE

Key dates

Filing date	Mar 7, 2013
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Mar 20, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE01C23/127
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A self-propelling construction machine has a machine frame, an operating drum and a drum housing enclosing the operating drum. The drum housing is closed off by a front and/or rear sealing element and/or lateral sealing element. The construction machine has a mechanism for raising and lowering the at least one sealing element. A measuring unit is configured so that the measuring unit measures the forces acting on the sealing element when the sealing element encounters an obstacle. A control unit generates a control signal for raising the sealing element when the force measured by the measuring unit is larger than a predetermined limit value, so that the sealing element is raised.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.