Dispensing – With discharge assistant – With discharge volume varying means
Patent
1998-06-02
1999-12-21
Kaufman, Joseph A.
Dispensing
With discharge assistant
With discharge volume varying means
222333, 222386, 222390, B65D 8854
Patent
active
060037369
ABSTRACT:
The present invention relates to an improved displacement device (1) for controlled dispensing of a dose of a liquid contained in a cartridge (40), the displacement device (1) comprises a housing (5) incorporating: a mechanism (6) for accommodating the cartridge (40), a manually activatable displaceable elongated dose dispensing device (20), the elongated dose dispensing device (20) having a first end part (22) extending to the exterior of the housing (5), an elongated piston rod (30) connected with a displaceable piston (32), the piston (32) being adapted to press out the liquid contained in the cartridge (40), and the piston rod (30) having a plurality of transversely extending teeth (25) arranged along its length, a toothed displacing mechanism (14), and a user-operated dose setting mechanism (8,10,12), the user-operated dose setting mechanism (8,10,12) and the toothed displacing mechanism (14) are operatively connected to cause movement of the toothed displacing mechanism (14) in response to the operation of the dose setting mechanism (8,10,12), pinion mechanism (35) having a shaft (37), being rotatably secured to the elongated dose dispensing device (20), the pinion mechanism (35) being arranged to engage the teeth of the toothed displacing mechanism (14) and the teeth (25) of the piston rod (30).
REFERENCES:
patent: 1172820 (1916-02-01), Meegan
patent: 3572556 (1971-03-01), Pogacar
patent: 4848606 (1989-07-01), Taguchi et al.
patent: 5219099 (1993-06-01), Spence et al.
Kaufman Joseph A.
Novo Nordisk A S
Zelson Esq. Steve T.
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