Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working
Reexamination Certificate
2006-12-05
2008-10-21
Kreck, John (Department: 3672)
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Floor-working
Reexamination Certificate
active
07438364
ABSTRACT:
In a scraper device for a milling drum (2) mounted in a construction machine, with a scraper blade (10) arranged in a height-adjustable manner behind the milling drum (2) when seen in the direction of travel, which can glide on the surface (3) milled or to be milled by the milling drum (2), where the scraper blade (10) is guided in lateral guides (12) in a height-adjustable manner relative to the milling drum (2), and where first centering devices (14) are provided which center the scraper blade (10) between the guides (12) with small lateral play of movement when in a raised position, and which allow a greater lateral play of movement of the scraper blade (10) when the scraper blade (10) is in a lowered working position, it is provided that the second centering devices (20) act upon the upper end (16) of the scraper blade (10), restricting the lateral displacement of the scraper blade (10) at the upper end (16) in case of a lateral movement of the scraper blade (10) in the guides (12).
REFERENCES:
patent: 4325580 (1982-04-01), Swisher et al.
patent: 6923508 (2005-08-01), Holl et al.
Boehme Heiko
Kurscheid Urban
Ley Herbert
Tewes Guenter
Diller Ramik & Wight
Kreck John
Wirtgen GmbH
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