Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Reexamination Certificate
2008-03-11
2008-03-11
Maust, Timothy L. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
C141S004000, C141S066000, C141S237000, C053S432000
Reexamination Certificate
active
07341078
ABSTRACT:
An automatic bulk filling process for filling a large number of liquid containers (20) simultaneously which consists of placing the open-topped liquid containers upside down in a rack (22). The rack is then inserted into a vacuum chamber (28) and positioned directly above a tray (38) that contains a liquid medicinal product (40). The next step is to evacuate the chamber to a predetermined level below atmospheric pressure and then lowering the rack until the containers are partially immersed in the liquid product. Following that step, nitrogen is introduced into the vacuum chamber at a predetermined gradual rate, thereby quickly forcing the medicinal liquid product into the containers. The rack is then raised from the tray containing the liquid medicinal product and removed from the chamber as another rack full of containers is simultaneously inserted into the chamber from the other end.
REFERENCES:
patent: 1922458 (1933-08-01), Schaeffer
patent: 3282306 (1966-11-01), Greenhut
patent: 4099550 (1978-07-01), Matsuzaki et al.
patent: 4713925 (1987-12-01), Kafkis
patent: 6418982 (2002-07-01), Zhang et al.
Lou Zhi Dong
Luo Mary Zi Ping
Xia Frank Zhi Shi
Zhang Jack Yong Feng
Amphastar Pharmaceuticals
Cota Albert O.
Maust Timothy L.
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