Manual precompression pump for the spraying of a liquid and a di

Details Manual precompression pump for the spraying of a liquid and a di Manual precompression pump for the spraying of a liquid and a di

1995-06-07

1997-06-24

Kaufman, Joseph

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

2223218, 239333, G01F 1128

Patent

active

056410972

ABSTRACT:
A precompression pump for the spraying of a liquid includes a pumping chamber (2) containing a first piston (7) associated with a manipulating element (6), this piston bearing against a first spring (9). A precompression chamber (5) is provided with a second piston (10) bearing against a second spring (11), the precompression chamber communicating with the pumping chamber, their axes of symmetry being offset. A feeder duct (4) is provided with a valve (4a, 15) leading into the pumping chamber. A dispensing element (17) is provided with a nozzle (20) and with a dispensing duct (18) connecting the nozzle and the precompression chamber. The connection between the nozzle and the precompression chamber is interrupted in the rest position of the pump and is established under the action of the manipulating element.

REFERENCES:
patent: 2342288 (1944-02-01), Mai
patent: 3061202 (1962-10-01), Tyler
patent: 4191313 (1980-03-01), Blake et al.
patent: 4225060 (1980-09-01), Kutik et al.
patent: 4678122 (1987-07-01), Riglietti
patent: 5092495 (1992-03-01), Andre
patent: 5192006 (1993-03-01), Van Brocklin et al.
patent: 5193748 (1993-03-01), Wittersheim et al.
patent: 5518377 (1996-05-01), Bougamont et al.

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