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1. 发明授权

US4417575A Respirators 失效
标题翻译：呼吸器
公开(公告)号：US4417575A
公开(公告)日：1983-11-29
申请号：US276190
申请日：1981-06-22
申请人： Joseph R. Hilton , John D. Wood
发明人： Joseph R. Hilton , John D. Wood
IPC分类号： A62B18/02 , A41D13/11 , A62B7/10
CPC分类号： A41D13/1123 , A41D13/1115 , A41D13/113
摘要： The present invention relates to a filtering facepiece made from flexible filtering sheet material.The facepiece is made from a flat pocket 100 of filtering sheet material having opposed side walls 105 and 106, a generally tapering shape with an open end 104 at the larger end and a closed end 101 at the smaller end. The edge of the pocket at the closed end is outwardly bowed, e.g. defined by intersecting straight lines and/or curved lines, and the closed end is provided with fold lines 107 defining a surface which is folded inwardly of the closed end of the pocket to define a generally conical inwardly extending recess 108 for rigidifying the pocket against collapse against the face of the wearer on inhalation.
摘要翻译：本发明涉及一种由柔性过滤片材制成的过滤面罩。面罩由具有相对的侧壁105和106的过滤片材料的扁平袋100制成，大致呈锥形的形状，其较大端处的开口端部104和较小端部处的封闭端部101。封闭端口处的口袋的边缘向外弯曲，例如，由相交的直线和/或曲线限定，并且封闭端设置有限定表面的折叠线107，该表面折叠在口袋的封闭端的内侧，以限定大致圆锥形的向内延伸的凹槽108，用于使口袋硬化以防止塌陷在吸入时抵抗佩戴者的脸部。

2. 发明授权

US4430995A Power assisted air-purifying respirators 失效
标题翻译：电动辅助空气净化呼吸器
公开(公告)号：US4430995A
公开(公告)日：1984-02-14
申请号：US381632
申请日：1982-05-24
申请人： Joseph R. Hilton
发明人： Joseph R. Hilton
IPC分类号： A61M16/00 , A62B7/10 , A62B18/00
CPC分类号： A62B18/006 , A61M16/0057 , A61M16/0069 , A62B7/10
摘要： The present invention relates to an improved air-purifying device for respirators of the positive pressure type.The device comprises an expandable chamber having an outlet for connection to a facepiece, for example, a face mask, and an inlet connected to a pump for drawing ambient air into the device through a filter and pumping it into the chamber. In use, the wearer of the face mask draws air from the chamber and that air is replenished by operation of the pump.Apparatus is provided for sensing the degree of expansion of the expandable chamber and is coupled with a device for varying the power supplied to the pump so that the pump means supplies only sufficient filtered air to maintain the chamber inflated. A bias is provided on the chamber, advantageously coupled with the sensing apparatus for maintaining a positive pressure in the chamber.The air-purifying device allows close control of the amount of air passing through the respirator so as to substantially reduce the amount of air which is filtered but unbreathed to extend the life of the filter.
摘要翻译：本发明涉及一种用于正压式呼吸器的改进的空气净化装置。该装置包括具有用于连接到面罩的出口的可膨胀室，例如面罩，以及连接到泵的入口，用于通过过滤器将环境空气抽吸到装置中并将其泵送到室中。在使用中，面罩的穿着者从腔室吸入空气，并且通过泵的操作来补充空气。提供了用于感测可膨胀室的膨胀程度的装置，并且与用于改变供应给泵的功率的装置联接，使得泵装置仅供应足够的过滤空气以维持室膨胀。在室上提供偏压，有利地与感测装置耦合，以保持腔室中的正压力。空气净化装置允许密封地控制通过呼吸器的空气量，以便基本上减少被过滤但不经过呼吸以延长过滤器寿命的空气量。

3. 发明授权

US4419994A Respirators 失效
标题翻译：呼吸器
公开(公告)号：US4419994A
公开(公告)日：1983-12-13
申请号：US276163
申请日：1981-06-22
申请人： Joseph R. Hilton
发明人： Joseph R. Hilton
IPC分类号： A62B18/02 , A41D13/11 , A62B7/00
CPC分类号： A41D13/113 , A41D13/1115 , A41D13/1123
摘要： The present invention relates to a respirator of the type called a filtering facepiece which is made from a flat pocket of flexible filtering sheet material having a generally tapering shape with an open edge at the larger end of the pocket and a closed end at the smaller end of the pocket. The closed end of the pocket is formed with fold lines defining a generally quadrilateral surface comprising triangular surfaces which are folded to extend inwardly of the pocket, the triangular surfaces facing each other and being, in use, relatively inclined to each other.
摘要翻译：本发明涉及一种称为过滤面罩的呼吸器，其由柔性过滤片材料的扁平袋制成，其具有大致锥形的形状，在口袋的较大端处具有开口边缘，在较小端部具有封闭端的口袋里口袋的封闭端部形成有折线，该折线限定了大致四边形的表面，该四边形表面包括三角形表面，该三角形表面被折叠以向口袋内延伸，三角形表面彼此相对并且在使用中彼此相对倾斜。

4. 外观设计

USD267207S Welder's helmet 失效
公开(公告)号：USD267207S
公开(公告)日：1982-12-14
申请号：US198166
申请日：1980-10-17
申请人： Joseph R. Hilton
设计人： Joseph R. Hilton

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