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:
Sep. 16, 2003
Filed:
Dec. 10, 2001
Gilles Baudin, Domont, FR;
L'Oreal, Paris, FR;
Abstract
The invention relates to a pump for fitting to a receptacle, the pump comprising a pump body and a moving assembly movable relative to the body, having a piston that bears in leakproof manner against the body and that co-operates therewith to define a pump chamber of variable volume. The pump also has, outside the pump chamber, an elastically deformable membrane arranged to return the moving assembly into its initial position after delivering a quantity of substance. The moving assembly has a rod with an internal passage for delivering the substance contained in the pump chamber, said internal passage opening out into the pump chamber via at least one outlet orifice and the pump having a piston that is movable relative to the rod between a pre-compression position in which it closes the outlet orifice(s) and a delivery position in which it releases said orifice(s), the piston being moved from its pre-compression position to its delivery position under drive from the pressure of the substance inside the pump chamber.