Electromagnetic pump with projections formed on the coil bobbin
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United States of America Patent
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-
Jan 23, 1990
Grant Date -
N/A
app pub date -
Dec 21, 1988
filing date -
Dec 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromagnetic pump includes a cylindrical member, a resin coil bobbin, a printed circuit board, a holder, and pump housing. Engaging projections are formed on a peripheral portion of a surface of the coil bobbin, which opposes the lid, and the electromagnetic pump components are held in the pump housing while they are biased in the axial direction of the cylindrical member by utilizing the engaging projections.
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