Metering device for sand spreading devices, especially for...

Details Metering device for sand spreading devices, especially for... Metering device for sand spreading devices, especially for...

2005-09-06

2005-09-06

Le, Mark T. (Department: 3617)

Track sanders

Miscellaneous

C222S518000, C222S509000, C222S559000, C222S561000

Reexamination Certificate

active

06938935

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.

REFERENCES:
patent: 528998 (1894-11-01), Thomas
patent: 769929 (1904-09-01), Allenbach
patent: 772218 (1904-10-01), Cooper
patent: 872104 (1907-11-01), Bacon
patent: 2334181 (1943-11-01), Elston
patent: 2522677 (1950-09-01), Kelly

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