公开(公告)号：US20230201852A1

公开(公告)日：2023-06-29

申请号：US17927958

申请日：2021-05-28

Applicant: Promens SA

Inventor： Sabine GOETTKE ,  Gwénael DOULIN ,  Pascal HENNEMANN

IPC: B05B11/10

CPC classification number: B05B11/1077 ,  B05B11/1023 ,  B05B11/1074 ,  B05B11/1047

Abstract: A pump for dispensing a fluid, has a pump head , a piston body with a piston, a pump chamber limited by a pump chamber body, an inlet valve and an outlet valve, the piston being moveable by respective movement of the pump head between an upper starting position and a lower end position. A return stroke force for a return stroke from the lower end position into the upper starting position is provided by a bellows, formed by two bellows arranged one above the other, Each of the bellows is folded up, when moving the pump head into the lower end position, by exerting a compression force on the pump head, the first bellows receiving the compression force by direct engagement with the pump head, the second bellows receiving the compression force only by engagement with the first bellows.

公开(公告)号：US20200047202A1

公开(公告)日：2020-02-13

申请号：US16492596

申请日：2018-03-07

Applicant: PROMENS SA

Inventor： Pascal HENNEMANN ,  Gwénael DOULIN ,  Joey KURTZ

IPC: B05B11/00

Abstract: The invention relates to a device (1) for dispensing a product (L), comprising: an element for connection to a container (R) containing the product; a piston (3) that is stationary in relation to the connection element; a cylinder body that moves around the piston, thereby defining a dosing chamber (100), the piston comprising a dosing inlet (35) for said chamber and the apex (64) of the dosing chamber comprising an outlet of the dosing chamber; and an inflow non-return valve (5) with a membrane for opening or closing the dosing inlet, the piston being in two parts, one of which forms a sealing joint with the cylinder body, the piston and the inflow non-return valve forming separate parts and being arranged such that the membrane is tightly clamped to the top of the piston.