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1. 发明授权

US06334553B1 Anti-float plunger for pneumatically actuated syringe 失效
标题翻译：用于气动注射器的防浮动柱塞
公开(公告)号：US06334553B1
公开(公告)日：2002-01-01
申请号：US09519298
申请日：2000-03-06
申请人： Carlos E. Bouras , Nick I. Mellos
发明人： Carlos E. Bouras , Nick I. Mellos
IPC分类号： B67D542
CPC分类号： B05C17/00576 , B05C11/10 , B05C17/015
摘要： An anti-float plunger for a pneumatically actuated syringe includes an inner cylindrical ring with two open ends held within a cylindrical cover having one open end and one closed end. The open end is at the backside of the plunger. The closed end is at the frontside, in contact with liquid to be forced through the syringe outlet. The cover includes an outer flexible wiper extending around the circumference. This wiper maintains an airtight seal with the syringe walls even when the walls bulge outwardly due to excessive backside pressure. The cover also includes a deformable membrane at the closed end, which deforms away from the outlet to alleviate residual pressure buildup on the liquid in the frontside. This structure eliminates air entrapment within the syringe, while also preventing residual pressure buildup within the syringe.
摘要翻译：用于气动致动的注射器的防浮动柱塞包括内圆柱形环，其具有两个开放端，保持在具有一个开口端和一个封闭端的圆柱形盖内。开口端位于柱塞的背面。封闭端在前侧，与液体接触以迫使其通过注射器出口。盖子包括围绕圆周延伸的外部柔性擦拭器。即使当墙壁由于背面压力过大而向外膨胀时，该刮水器仍将保持与注射器壁的气密密封。盖子还包括位于封闭端的可变形膜，其从出口变形，以减轻前侧液体的残留压力积聚。该结构消除了注射器内的空气滞留，同时也防止了注射器内的残余压力积聚。

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