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1. 发明授权

US3966035A Printer 失效
标题翻译：打印机
公开(公告)号：US3966035A
公开(公告)日：1976-06-29
申请号：US447138
申请日：1974-03-01
申请人： Robert L. Erickson
发明人： Robert L. Erickson
IPC分类号： B41J2/265 , B41J2/285 , B41J3/10
CPC分类号： B41J2/285 , B41J2/265
摘要： A low cost dot printer head which includes a base plate of ferromagnetic material with slots that divide a rear portion of the plate into several magnetic circuits that are isolated from one another and that hold separate coils for individually magnetizing the circuits, the head also including an armature slideable along each magnetic circuit and a printer wire having a rear end fixed to a corresponding armature and a front end slideable in a guide mounted at the front of the base plate.
摘要翻译：一种低成本点打印机头，其包括具有狭槽的铁磁材料的基板，所述槽具有将所述板的后部分成彼此隔离的若干磁路，并且保持用于单独磁化所述电路的单独的线圈，所述头还包括电枢可沿着每个磁路滑动;以及打印机线，其具有固定到相应电枢的后端和可安装在基板前部的引导件中滑动的前端。

2. 发明授权

US5499917A Dental isolation dam 失效
标题翻译：牙齿隔离大坝
公开(公告)号：US5499917A
公开(公告)日：1996-03-19
申请号：US355808
申请日：1994-12-14
申请人： Robert L. Erickson , Paul E. Hansen , Paul A. Burgio , Joel D. Oxman , James D. Christoff
发明人： Robert L. Erickson , Paul E. Hansen , Paul A. Burgio , Joel D. Oxman , James D. Christoff
IPC分类号： A61C5/12 , A61C5/14
CPC分类号： A61C5/122
摘要： A dental isolation dam has a plurality of elastic fibers arranged in a rectangular, crisscrossed pattern between impervious films. The fibers enable the dam to be easily placed, and, once released, clinch around necks of isolated teeth to provide enhanced moisture and infection control.
摘要翻译：牙科隔离堤具有在不透水膜之间布置成矩形，十字交叉图案的多个弹性纤维。纤维使得水坝易于放置，并且一旦释放，就可以在孤立的牙齿的颈部附近，以提供增强的水分和感染控制。

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