F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/37
F04B 43/04 (2006.01) F04B 45/027 (2006.01)
Patent
CA 1174112
ELECTROMAGNET FLUID PUMP ABSTRACT This invention relates generally to fluid pumps of the type which may be used, for example, to aerate water in an aquarium. Prior art pumps have a flexible diaphragm which define one wall of an internal pumping chamber and which is reciprocated by a direct or indirect mechanical drive. Direct drive diaphragm pumps are typically relative- ly complex and expensive in construction and indirect drive diaphragm pumps tend to be relatively noisy in operation and are subject to periodic failure. The electromagnetic fluid pump of the present invention is of simple construction and has a minimum number of moving parts which are very quiet in operation and have long operating life and, if repairs are needed, are very simple and inexpensive to service. Speci- fically, the pump of the invention comprises an electromag- net motor unit including an electromagnet for producing a reversing magnetic field to drive a fluid pump unit includ- ing a pump casing and a flexible diaphragm defining a fluid pumping chamber. A permanent magnet is carried by the flexible diaphragm and to alternately repelled and attrac- ted by the magnetic field to displace the diaphragm to expand and contract the pumping chamber.
392384
Louis Anthony
Smart & Biggar
LandOfFree
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