Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Reexamination Certificate
2007-05-15
2007-05-15
Koczo, Michael (Department: 3746)
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
C417S474000
Reexamination Certificate
active
10613429
ABSTRACT:
The hose pump comprises an eccentric drive with numerous eccentric discs (21) fastened to a shaft (20). Each eccentric disc (21) drives a crank drive (24) having a connecting rod (25). At the end of the connecting rod (25), a pump finger (11) is borne for compressing a pump hose (10). A sealing diaphragm (27) is disposed between the eccentric drive and the pump hose (10) for preventing liquid from intruding into the interior of the housing (16). The connecting rod (25) sealingly passes through the sealing diaphragm (27). The sealing diaphragm (27) comprises lateral folds (31) so that it does not exert any substantial forces upon the crank drive (24). The hose pump has a low power consumption and permits a small structure.
REFERENCES:
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patent: 4500266 (1985-02-01), Cummins
patent: 4690673 (1987-09-01), Bloomquist
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patent: 4893991 (1990-01-01), Heminway et al.
patent: 5533886 (1996-07-01), Von Der Heyde et al.
patent: 6036459 (2000-03-01), Robinson
patent: 3234219 (1983-04-01), None
patent: 0 214 443 (1987-03-01), None
patent: 0 M291 158 (1988-11-01), None
patent: 0 484 717 (1992-05-01), None
patent: 1182908 (1970-03-01), None
patent: 2 179 404 (1987-03-01), None
Herwig Dieter
Knuth Reinhard
B. Braun Melsungen AG
Dwivedi Vikansha
Koczo Michael
Montgomery John W.
Osha & Liang LLP
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