Electromagnetic pump with projections formed on the coil bobbin

Details Electromagnetic pump with projections formed on the coil bobbin Electromagnetic pump with projections formed on the coil bobbin

1988-12-21

1990-01-23

Smith, Leonard E.

Pumps

Motor driven

Including means for facilitating assembly or disassembly of...

417417, 310 15, F04B 1704

Patent

active

048954950

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.

REFERENCES:
patent: 4314797 (1982-02-01), Gerwin
patent: 4643653 (1987-02-01), Masaka et al.
patent: 4661048 (1987-04-01), Masaka et al.
patent: 4778357 (1988-10-01), Arai et al.

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