Pumps – Motor driven – Electric or magnetic motor
Patent
1985-09-24
1987-07-07
Croyle, Carlton R.
Pumps
Motor driven
Electric or magnetic motor
74128, 74142, F04B 906, F04B 1300
Patent
active
046784080
ABSTRACT:
A solenoid drive apparatus for driving a lead screw of an External Infusion Pump (1) having a housing (302), solenoid winding (356) within the housing (302), a solenoid armature (358) which is driven by the field of the solenoid winding (356), push rod (362) which is driven by the armature (358), pawn (314) which is driven by push rod (362), a first pawl (320) which is driven by pawn (314) and a second pawl (326) which is an antibacklash device, a ratchet wheel (318) having teeth (319) around its periphery and engaged by the first pawl (320) and the second pawl (326) and the drive shaft (316) which is drawn by the ratchet of the ratchet wheel (318).
REFERENCES:
patent: 3115589 (1963-12-01), Bender et al.
patent: 3204133 (1965-08-01), Tschudin
patent: 3341138 (1967-09-01), Allen
patent: 3501968 (1970-03-01), Fredell
patent: 3618868 (1971-11-01), Vavrinec
patent: 4474309 (1984-10-01), Solomon
patent: 4562751 (1986-01-01), Nason et al.
Culp Gordon W.
Nason Clyde K.
Croyle Carlton R.
Gold Bryant R.
Miller Leslie S.
Olds Ted
Pacesetter Infusion, Ltd.
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