Pumps – Expansible chamber type – Electrically or magnetically actuated distributor
Patent
1996-04-08
1998-09-15
Mohanty, Bibhu
Pumps
Expansible chamber type
Electrically or magnetically actuated distributor
251 65, F04B 700, F16K 3108
Patent
active
058070850
ABSTRACT:
A liquid medicine supplying system comprises a housing 11 including a pump chamber 27, a diaphragm 28 for changing a volume of the pump chamber 27, a first flow path 31 for guiding liquid in a liquid storage tank to the pump chamber 27 and a second flow path 32 for guiding the liquid stored in the pump chamber 27 to a liquid discharge portion. A first valve body 34 for on-off operating the first flow path 31 is disposed in the first flow path 31. A second valve body 35 for on-off operating the second flow path 32 is disposed in the second flow path 32. Furthermore, a magnet 41 on the follow up side is provided in the valve body 34 and the second valve body 35. Then, in the housing 11, there are provided magnets 43a, 44a and the like cause the magnetic field to act on the magnet 41 on the follow up side, whereby the first valve body 34 and the second valve body 35 are set at opening positions or closing positions. With this arrangement, there is provided the liquid medicine supplying system having the valve devices for positively on-off operating the flow paths without forming complicated flow paths, in which the liquid turns into the valves for on-off operating the flow paths.
REFERENCES:
patent: 4481389 (1984-11-01), Johnson
patent: 5009388 (1991-04-01), Pei-gi et al.
patent: 5052429 (1991-10-01), Yoo
patent: 5061156 (1991-10-01), Kuehne et al.
patent: 5169117 (1992-12-01), Huang
patent: 5244360 (1993-09-01), Lefebvre
Koganei Corporation
Mohanty Bibhu
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