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22 条记录 (耗时 0.021 秒)

    Breathing apparatus
    5.
    发明授权
    Breathing apparatus 失效

    公开(公告)号：US4971052A

    公开(公告)日：1990-11-20

    申请号：US380825

    申请日：1989-07-17

    申请人： David B. Edwards

    发明人： David B. Edwards

    IPC分类号： A62B7/10 ,  A61M16/00 ,  A62B18/00 ,  F04D27/02

    CPC分类号： F04D27/004 ,  A62B18/006

    摘要： A powered respirator comprises a motor-driven fan unit drawing air through an upstream filter for delivery to a facepiece. Operation of the fan motor is controlled in response to a differential pressure sensor tapped in across the fan unit so as to reduce the fan throughput in response to an increase in the pressure differential and to increase the fan throughput in response to a decrease in the pressure differential, and thereby match the delivery of air to the breathing demand of the wearer. The diaphragm or other pressure-responsive member of the sensor is isolated from unfiltered air and can therefore provide no leakage path for contaminants to the facepiece. In an alternative embodiment the positions of the fan and filter are reversed so that the fan is upstream of the filter, and similarly controlled in response to the differential pressure across the fan. In the latter arrangement any contaminant which could pass through the pressure sensor is removed by the downstream filter before delivery to the facepiece.

    Welding helmet with removable face plate and lens cartridge
    6.
    发明授权
    Welding helmet with removable face plate and lens cartridge 失效
    焊接头盔与可拆卸面板和镜头墨盒

    公开(公告)号：US6151711A

    公开(公告)日：2000-11-28

    申请号：US283489

    申请日：1999-04-01

    申请人： David B. Edwards

    发明人： David B. Edwards

    IPC分类号： A61F9/06

    CPC分类号： A61F9/061

    摘要： A welding helmet includes a removable lens cartridge assembly which is slidingly received by a slot at the front of the welding helmet. The lens cartridge assembly includes a picture frame slot into which a face lens may be friction fit by insertion from the side. Additional filters and lenses may be held in place within the cartridge by a removable frame assembly that has a plurality of integrally formed but resilient finger extensions which press against the filters as they are placed within the cartridge. The frame assembly mechanically interlocks with the removable cartridge with a plurality of locating tabs and slots. The cartridge assembly itself is also mechanically positively interlocked to the welding helmet with a locating nib and receiving hole near the bottom of the slot. The receiving slot has a front and rear picture frame border which surrounds and encapsulates the removable lens cartridge so that the lens cartridge is mechanically locked in place and captured within a mechanical fixture to avoid its being dislodged upon impact.

    摘要翻译： 一种焊接头盔包括可拆卸的透镜盒组件，该组件由焊接头盔前部的槽滑动地容纳。 透镜盒组件包括相框插槽，面镜可以通过从侧面插入而摩擦配合到其中。 附加的过滤器和透镜可以通过可移除的框架组件保持在盒内的适当位置，该组件具有多个整体形成但是具有弹性的指状延伸部，当它们被放置在盒中时，它们抵靠过滤器。 框架组件与具有多个定位翼片和狭槽的可移除盒机械地互锁。 盒组件本身还机械地与焊接头盔机械地互锁，在槽的底部附近具有定位笔尖和接收孔。 接收槽具有前后相框边框，其围绕并封装可拆卸透镜盒，使得透镜盒机械地锁定在适当位置并且捕获在机械夹具内以避免其在撞击时被移除。

    Pivotable hairbrush
    9.
    发明授权
    Pivotable hairbrush 失效
    透视发根

    公开(公告)号：US5906023A

    公开(公告)日：1999-05-25

    申请号：US936959

    申请日：1997-09-25

    申请人： David B. Edwards

    发明人： David B. Edwards

    IPC分类号： A46B7/06

    CPC分类号： A46B5/0025 ,  A46B7/06 ,  A46B2200/104

    摘要： A pivotable hairbrush for offering a hairbrush that would adjust to the contour of a user's head. The inventive device includes a pivotable head, a plurality of bristles protruding from the pivotable head, and a handle extending from one end of the pivotable head. The pivotable head includes a stationary portion and a pivotable portion wherein the pivotable portion and the plurality of bristles protruding therefrom conjointly pivot relative to the stationary portion so as to conform to the contour of the head of a user.

    摘要翻译： 一个可枢转的发刷，用于提供一个适应用户头部轮廓的发刷。 本发明的装置包括可枢转头部，从可枢转头部突出的多个刷毛和从可枢转头部的一端延伸的手柄。 可枢转头包括固定部分和可枢转部分，其中可枢转部分和从其突出的多个刷毛相对于固定部分共同枢转，以便与使用者头部的轮廓一致。