Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Reexamination Certificate
2005-03-29
2005-03-29
Tyler, Cheryl J. (Department: 3746)
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
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
Dowell & Dowell , P.C.
Oase Wubker GmbH & CO KG
Solak Timothy P.
Tyler Cheryl J.
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