Electromagnetic pump

Details Electromagnetic pump Electromagnetic pump

2004-03-22

2009-11-24

Kramer, Devon C (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S415000, C417S460000, C417S526000, C417S533000, C417S534000, C361S699000

Reexamination Certificate

active

07621723

ABSTRACT:
A pump apparatus that produces a pumping action for a gas or a liquid is produced in an extremely small and slim form and can be favorably used as a cooling pump apparatus for an electronic appliance or the like.There is provided an electromagnetic pump where a plunger10including a magnetic body is provided so as to be capable of sliding inside a cylinder that is sealed at both end surfaces thereof by a pair of frames20a, 20bwith spaces between the plunger10and the end surfaces of the respective frames20a, 20bas pump chambers30a, 30b, air-core electromagnetic coils50a, 50bare disposed around an outer circumference of the cylinder, and a fluid is conveyed by passing a current through the electromagnetic coils50a, 50bto reciprocally move the plunger10in an axial direction of the cylinder, wherein intake valves34a, 34band outflow valves36a, 36bthat connect the pump chambers30a, 30band the outside are provided inside regions of the frames20a, 20bat the end surfaces of the cylinder.

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