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:
Dec. 25, 2001
Filed:
Jan. 24, 2001
Firmin Garcia, Evreux, FR;
Hervé Pennaneac′h, Verneuil-sur-Avre, FR;
Alain Lafosse, Louversey, FR;
Valois S.A., Le Neuboug, FR;
Abstract
A dispenser device without any air intake, such as an airless pump, for dispensing a fluid substance, the device comprising a dispensing chamber (,) of variable volume, which chamber is provided with an inlet (,) equipped with an inlet valve member (,), and is provided with an outlet equipped with an outlet valve member, the dispenser further comprising a piston (,) for causing the volume of the dispensing chamber (,) to vary, closure elements (,) being provided to close off the dispensing chamber (,) in airtight manner, substantially at its inlet (,), prior to it being used for the first time, the device being characterized in that the closure elements are formed by the inlet valve member (,).