Dispensing – With discharge assistant – With movable nozzle interconnected therewith
Patent
1991-09-17
1993-11-16
Kashnikow, Andres
Dispensing
With discharge assistant
With movable nozzle interconnected therewith
141 20, B67D 540
Patent
active
052615731
ABSTRACT:
A manual precompression pump for spraying or dispensing a fluid substance contained in a receptacle, said pump having a pump body (1) in which a hollow piston (2) slides the piston being extended by a hollow rod (3) including the seat (7a) for a closure valve member (6) urged towards said hollow rod by a spring (10), said spring pushing the valve member (6) and the piston (2) towards a rest position, said pump including a pump chamber (12) which is in communication with the receptacle when the valve member and the piston are in their rest positions, said pump chamber (12) being capable of being isolated from the receptacle by sealed interfitting of a first cylinder (8) integral with the valve member (6) and of a second cylinder (4) integral with the pump body, said pump being characterized in that a valve rod (7b) extends the valve member (6) through the hollow rod (3) to a distance H1 beyond the outside end of the hollow rod, and in that starting from the rest position of the valve member, the cylinder (8) integral with the valve member can be moved towards the cylinder (4) integral with the pump body through a distance H2 which is greater than H1 without the interfitting between the two cylinders becoming sealed.
REFERENCES:
patent: 4917156 (1990-04-01), Varlet
patent: 4944432 (1990-07-01), Jouillat
patent: 4964547 (1990-10-01), Lina
Brunet Michel
Jouillat Claude
Derakshani Philippe
Kashnikow Andres
Societe Technique de Pulverisation - S.T.E.P.
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