Mud suction unit

Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver

Reexamination Certificate

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Details

C417S044200, C137S204000

Reexamination Certificate

active

06872055

ABSTRACT:
The invention relates to a mud suction unit having a suction element which is connected to a receiving container and has a motor for the generation of a suction flow and also has a discharging element attached to the receiving container.

REFERENCES:
patent: 2767904 (1956-10-01), Doyle
patent: 3549015 (1970-12-01), Willinger
patent: 3706319 (1972-12-01), Neese et al.
patent: 4507054 (1985-03-01), Schoenmeyr
patent: 4801376 (1989-01-01), Kulitz
patent: 0 353 547 (1990-02-01), None

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