Manually-operated precompression type spray head

Details Manually-operated precompression type spray head Manually-operated precompression type spray head

1990-03-22

1992-03-17

Olszewski, Robert P.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

22240216, 222321, 141 20, 251347, 251353, B67D 540

Patent

active

050960970

ABSTRACT:
A spray head for use with a receptacle containing a liquid which is maintained under pressure by a propellant gas, thereby enabling a product to be packaged so that it is protected from coming into contact with the air, the spray head being of the type comprising a manually-operated precompression pump which includes a pump chamber comprising first and second cylinders (11, 15) capable of engaging telescopically, the chamber being closed by relative displacement of the cylinders, said first cylinder being integral with the pump outlet valve and being provided at one of its end with a circular sealing lip (12) capable of engaging against and of sliding along the wall of the second cylinder, which second cylinder is in communication with the inside of the receptacle, the wall being provided at at least one of its ends with relief (18) such that when the sealing lip lies over the relief and the relief causes sealing to be broken, a passage is opened suitable for passing gas at a rate of flow which is sufficient for filling the receptacle.

REFERENCES:
patent: 2612293 (1952-09-01), Michel
patent: 2802490 (1957-08-01), Ward
patent: 3108721 (1963-10-01), Nebinger
patent: 3211346 (1965-10-01), Meshberg
patent: 3250474 (1966-05-01), McKernan
patent: 4025046 (1977-05-01), Boris
patent: 4271875 (1981-06-01), Meshberg
patent: 4365729 (1982-12-01), Saito et al.
patent: 4503997 (1985-03-01), Corsette
patent: 4842168 (1989-06-01), Bougamont et al.
patent: 4944432 (1990-07-01), Jouillat
patent: 4964547 (1990-10-01), Lina

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