公开(公告)号：US20140367409A1

公开(公告)日：2014-12-18

申请号：US14281296

申请日：2014-05-19

Applicant: Nordson Corporation

Inventor： Henry Digregorio ,  James A. Gadol ,  Jeff Groene

IPC: B65D83/00

CPC classification number: B65D83/0005

Abstract: A liquid dispensing syringe and method for reducing piston bounce includes a barrel and a piston. The barrel defines an interior reservoir having an inner surface. The piston is disposed within the interior reservoir and has a proximal end and an elastic portion configured to expand under the influence of a pressurized gas. A first circumferentially extending wiper seal is positioned on the piston. The first wiper seal liquidly seals against the inner surface. A second circumferentially extending wiper seal is positioned on the piston proximally from the first wiper seal on the elastic portion. As such, the expanding elastic portion forces the second wiper seal to fluidly sealing against the inner surface for inhibiting the pressurized gas from flowing distally beyond the second wiper seal in order to reduce piston bounce.

Abstract translation: 用于减少活塞反弹的液体分配注射器和方法包括筒和活塞。 筒体限定具有内表面的内部储存器。 活塞设置在内部储存器内并且具有近端和弹性部分，该弹性部分构造成在加压气体的影响下膨胀。 第一周向延伸的擦拭器密封件定位在活塞上。 第一个刮水器密封液体密封在内表面上。 第二周向延伸的擦拭器密封件从弹性部分上的第一擦拭器密封件向近侧定位在活塞上。 因此，膨胀的弹性部分迫使第二擦拭器密封件相对于内表面流体密封，以阻止加压气体远离第二擦拭器密封件流动，以减少活塞反弹。

公开(公告)号：US09309042B2

公开(公告)日：2016-04-12

申请号：US14281296

申请日：2014-05-19

Applicant: Nordson Corporation

Inventor： Henry Digregorio ,  James A. Gadol ,  Jeff Groene

IPC: B67D7/60 ,  G01F11/00 ,  B65D83/00

CPC classification number: B65D83/0005

Abstract: A liquid dispensing syringe and method for reducing piston bounce includes a barrel and a piston. The barrel defines an interior reservoir having an inner surface. The piston is disposed within the interior reservoir and has a proximal end and an elastic portion configured to expand under the influence of a pressurized gas. A first circumferentially extending wiper seal is positioned on the piston. The first wiper seal liquidly seals against the inner surface. A second circumferentially extending wiper seal is positioned on the piston proximally from the first wiper seal on the elastic portion. As such, the expanding elastic portion forces the second wiper seal to fluidly sealing against the inner surface for inhibiting the pressurized gas from flowing distally beyond the second wiper seal in order to reduce piston bounce.

Abstract translation: 用于减少活塞反弹的液体分配注射器和方法包括筒和活塞。 筒体限定具有内表面的内部储存器。 活塞设置在内部储存器内并且具有近端和弹性部分，该弹性部分构造成在加压气体的影响下膨胀。 第一周向延伸的擦拭器密封件定位在活塞上。 第一个刮水器密封液体密封在内表面上。 第二周向延伸的擦拭器密封件从弹性部分上的第一擦拭器密封件向近侧定位在活塞上。 因此，膨胀的弹性部分迫使第二擦拭器密封件相对于内表面流体密封，以阻止加压气体远离第二擦拭器密封件流动，以减少活塞反弹。