1.
    发明专利
    未知

    公开(公告)号:DE59900363D1

    公开(公告)日:2001-12-06

    申请号:DE59900363

    申请日:1999-02-10

    Inventor: MEYER THOMAS

    Abstract: At least the one delivery pump is of the intermittently working type, particularly a piston pump (14). The second of the delivery pumps is of the continuously working type, particularly a gearwheel pump (16). Alternatively, the second pump can be a further piston pump. The two piston pumps are so controllable with timed displacement that the conduit system is always under pressure.

Patent Agency Ranking