The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1990
Filed:
Sep. 09, 1988
Jean P Lina, Le Neubourg, FR;
Valois (Societe Anonyme), LePrievre, FR;
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, said chamber being closed by relative displacement of said 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 said second cylinder, which second cylinder is in communication with the inside of the receptacle, said wall being provided at at least one of its ends with fairly substantial relief (18, 25) such that when said sealing lip lies over said relief and said 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.