公开(公告)号：US20150238989A1

公开(公告)日：2015-08-27

申请号：US14190233

申请日：2014-02-26

Applicant: EMSAR S.p.A.

Inventor： Marco ZAVARELLA ,  Matteo CAPORALE

IPC: B05B11/00

CPC classification number: B05B11/3098 ,  B05B11/0044 ,  B05B11/3001 ,  B05B11/3002 ,  B05B11/3023 ,  B05B11/3047 ,  B05B11/305 ,  B05B11/306 ,  B05B11/3074

Abstract: A dispensing pump includes a housing extending along a longitudinal axis and configured to be inserted in a bottle. The housing defines a dosing chamber and includes a venting hole. A retaining ring is fastened to the housing and inserted therein. A hollow stem is associated to a piston and inserted in a hole of the retaining ring leaving a passage. The hollow stem and piston are movable between a lowered position and a raised position corresponding to different volumes of the dosing chamber. A venting path includes at least the passage between the hollow stem and the retaining ring and the venting hole. Through the venting path a volume of air enters the bottle through the venting hole during the pump actuation to replace liquid pumped out from the bottle by the pump. A venting valve is interposed between the hollow stem and retaining ring, along the venting path.

Abstract translation: 分配泵包括沿纵向轴线延伸并构造成插入瓶中的壳体。 壳体限定了剂量室，并且包括通气孔。 固定环固定在壳体上并插入其中。 中空杆与活塞相关联，并插入保持环的孔中，留下通道。 空心杆和活塞可在对应于剂量室的不同体积的下降位置和升高位置之间移动。 排气路径至少包括中空杆与保持环和通气孔之间的通道。 通过排气路径，在泵致动期间，一定量的空气通过排气孔进入瓶子，以更换由泵泵出的液体。 排气阀沿着排气通道介于中空杆和保持环之间。