公开(公告)号：US06176239B1

公开(公告)日：2001-01-23

申请号：US09049659

申请日：1998-03-23

申请人： Corey M. Grove ,  Stephen E. Chase ,  William M. Fritch, Jr.

发明人： Corey M. Grove ,  Stephen E. Chase ,  William M. Fritch, Jr.

IPC分类号： A62B1808

CPC分类号： A62B18/02

摘要： An advanced chemical-biological mask for protecting a wearer from chemical and biological environmental contaminants. The mask provides improvements for the wearer in the areas of weight/bulk, fit/comfort, optical compatibility, breathing resistance, communication, and protection. The mask includes a facepiece, eye lens, filter means, inlet and outlet valves, and a nosecup all of which may be molded or integrally bonded to the facepiece which also has a face seal adapted to engage a person's face and form seal therewith. The mask also has a suspension flange which is connected to the facepiece adjacent the seal. An elastic suspension system includes a crown portion for suspending the mask on a person's head and pulling the seal downwardly and into contact with the person's face. The separate nosecup has integral channels to direct the flow of incoming gas along a path adjacent the lens to prevent fogging of the lens. The lens is one-piece and is designed to a polynomial curvature having an optimum eye relief of about 25 millimeters. The filter means comprises low profile integral filters having immobilized carbon beds and particulate filter media.

摘要翻译： 一种先进的化学生物面具，用于保护佩戴者免受化学和生物环境污染。 该面膜在重量/体积，适合/舒适性，光学兼容性，呼吸阻力，通讯和保护方面为穿戴者提供改进。 面罩包括面罩，眼睛透镜，过滤装置，入口和出口阀，以及所有这些可以模制或整体地结合到面罩上的面罩，面罩也具有适于接合人脸并与其形成密封的面部密封。 该面罩还具有悬挂凸缘，该凸缘连接到邻近密封件的面罩。 弹性悬挂系统包括冠部，用于将面罩悬挂在人的头部上并向下拉动密封并与人的脸部接触。 单独的组件具有整体通道，用于引导进入气体沿着与透镜相邻的路径的流动，以防止镜片起雾。 透镜是一体的，并且被设计成具有约25毫米的最佳眼睛释放度的多项式曲率。 过滤装置包括具有固定碳床和微粒过滤介质的薄型整体过滤器。