Dispensing – With filter
Patent
1994-01-27
1995-11-14
Kashnikow, Andres
Dispensing
With filter
2223216, 2223218, 222340, 222379, 222409, 222420, 222493, 222496, 222514, 222525, 277152, B67D 558
Patent
active
054658799
ABSTRACT:
A disposable nozzle assembly for connection to the lower end of a syringe in a viscous material dispensing apparatus. The disposable nozzle assembly includes a nozzle portion having an internal cylindrical drop generation chamber and an exit orifice. A cylindrical feed tube having a central feed passage has a lower end that can slide up and down within the cylindrical drop generation chamber. A dynamic seal is provided on the lower end of the feed tube that prevents viscous material from escaping between the feed tube and the inner wall of the drop generation chamber. The disposable nozzle assembly is further provided with a modified luerlock fitting having an internal hollow stem that mates with the tapered nozzle of a standard adhesive syringe in a manner which prevents the entrapment of an air bubble in the fluid path when an empty syringe is replaced.
REFERENCES:
patent: 1717496 (1929-06-01), Coffin et al.
patent: 2307291 (1943-01-01), Packwood, Jr.
patent: 2698015 (1954-12-01), Brown
patent: 2761833 (1956-09-01), Ward
patent: 4371101 (1983-02-01), Cane et al.
patent: 4830227 (1989-05-01), Ball et al.
patent: 5305922 (1994-04-01), Varon
Bouras Carlos E.
La Duong
Meier Mark S.
Roetker Thomas J.
Asymptotic Technologies, Inc.
Kashnikow Andres
Kaufman Joseph A.
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