Construction machine

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention

Reexamination Certificate

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Details

C475S159000, C074S467000, C184S006120, C060S456000

Reexamination Certificate

active

07980788

ABSTRACT:
The invention relates to a construction machine comprising a transmission, at least one hydraulic drive and a hydraulic circuit for supplying the hydraulic drive with hydraulic fluid, wherein at least one lubrication line is branched off from the hydraulic circuit, by means of which the transmission can be supplied with hydraulic fluid as a lubricant. The invention is characterized in that a dosing device is provided on the lubrication line, with which the supply of lubricant can be changed depending on an operating condition of the transmission.

REFERENCES:
patent: 4437358 (1984-03-01), Kubo et al.
patent: 4516655 (1985-05-01), Donahue et al.
patent: 4751858 (1988-06-01), Iwatsuki
patent: 5419130 (1995-05-01), Rückgauer et al.
patent: 5961419 (1999-10-01), Hisano et al.
patent: 2006/0048509 (2006-03-01), Umemura et al.
patent: 69 50 437 (1974-02-01), None
patent: 25 24 808 (1976-06-01), None
patent: 20 2004 019 034 (2005-04-01), None
patent: 0 534 067 (1993-03-01), None
patent: 1 245 737 (2002-10-01), None
patent: 2 775 732 (1999-09-01), None
patent: 1 435 499 (1976-05-01), None

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