Manual precompression pump for spraying a liquid, and dispensing

Details Manual precompression pump for spraying a liquid, and dispensing Manual precompression pump for spraying a liquid, and dispensing

1995-11-24

1998-01-20

Derakshani, Philippe

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

B67D 540

Patent

active

057093253

ABSTRACT:
A precompression pump for spraying a liquid comprises a pumping chamber (502) containing a first piston (507) associated with an operating member (506), this piston bearing against a first spring (509); a precompression chamber (505) equipped with a second piston (510) bearing against a second spring (511), the precompression chamber communicating with the pumping chamber via a passage (550), so that their axes of symmetry being offset. A feed channel (504) equipped with a valve (504a, 515) emerges in the pumping chamber. A dispensing element (517) is equipped with a nozzle (520) and with a dispensing channel (518) connecting the nozzle to the precompression chamber, the latter including a device (F) for placing in communication and for closing the said passage (550), so that communication is interrupted in the position of rest of the pump and so that communication is established under the action of the operating member.

REFERENCES:
patent: 3337096 (1967-08-01), Brown
patent: 3489322 (1970-01-01), Ayres
patent: 5125545 (1992-06-01), Passalacqua
patent: 5192006 (1993-03-01), Van Brocklin et al.
patent: 5425476 (1995-06-01), Montaner et al.

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