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:
Jun. 27, 2017
Filed:
Sep. 28, 2011
Gregory Lucas, Tresses, FR;
David Vacher, Tresses, FR;
Christophe Charriere, Tresses, FR;
DOSATRON INTERNATIONAL, Tresses, FR;
Abstract
A liquid metering pump includes an intake nozzle () provided with an intake valve () communicating with a working chamber () in which a piston () can be moved in an alternating translation movement, suction being produced, with the intake valve open, when the piston moves away from the nozzle, and delivery being produced, with the intake valve closed and liquid emerging through an outlet valve, when the piston moves towards the nozzle. The pump includes, between the intake valve () and the working chamber (), a device (D) for detecting the variation in pressure, the device (D) including a duct (), which is connected at one end to the working chamber () and is provided at its other end with the intake valve (), and an element () which is sensitive to the pressure in the duct, the element () being mounted in the wall of the duct.