Patent · US Expired

Crane trolley with low overall height

US7234400B2 · kind B2 · utility

4Cited by

8References

21Claims

0Family size

Assignee

Demag Cranes & Components GmbH · DE

Inventors

Klaus Winter · Troy, US
Michael Dammer · Wetter, DE
Heinrich Flaig · Bochum, DE
Erik Appel · Wetter, DE

Key dates

Filing date	Sep 21, 2004
Grant date	Jun 26, 2007
Priority date	—
Expiry date	Sep 21, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66C9/14
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A crane trolley, especially a single-rail trolley with a short overall height, with a traveling mechanism frame (2) having a hoisting mechanism (1), which can travel by running wheels (3, 3a) on a rail, especially a lower flange (4a) of an essentially horizontal beam (4), wherein at least one running wheel (3a) can be driven, and a friction roller (10) interacting with the driven running wheel (3a) is arranged on the underside (4b) of the rail. In order to create a crane trolley that guarantees a reliable reduction in the slippage of the driven running wheel (3a) with a simple design, a pair of friction rollers (10) is provided, which may be positioned against the underside (4b) of the rail by adjusting the spacing from each other via a common pressing mechanism.

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