Patent · US Expired

Metering device for sand spreading devices, especially for rail vehicles

US6938935B2 · kind B2 · utility

3Cited by

6References

7Claims

0Family size

Assignees

Norbert Goldmann · DE
Luise Bartling · DE

Inventor

Werner Bartling · Elze, DE

Key dates

Filing date	Mar 3, 2004
Grant date	Sep 6, 2005
Priority date	—
Expiry date	Mar 3, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB61C15/10
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

Metering or dosing device for sand spreading apparatuses with a metering piston for sealing off and releasing the throughflow opening for the material to be spread, in which the metering piston and the opposite housing wall of the passage hole have profiles overlapping each other so that a labyrinth-like outflow of the spread material results.

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