发明授权
US4659349A Filter unit on equipment requiring ventilation free of dust and
impurities during operation
失效
需要通风的设备上的过滤器，在运行过程中没有灰尘和杂质
- 专利标题： Filter unit on equipment requiring ventilation free of dust and impurities during operation
- 专利标题（中）： 需要通风的设备上的过滤器，在运行过程中没有灰尘和杂质
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申请号： US747988申请日： 1985-06-24
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公开(公告)号： US4659349A公开(公告)日： 1987-04-21
- 发明人: Anton Rodi , Jurgen Reithofer , Peter Blaser
- 申请人： Anton Rodi , Jurgen Reithofer , Peter Blaser
- 申请人地址： DEX Heidelberg
- 专利权人： Heidelberger Druckmaschinen AG
- 当前专利权人： Heidelberger Druckmaschinen AG
- 当前专利权人地址： DEX Heidelberg
- 优先权： DEX3423047 19840622
- 主分类号： B01D45/04
- IPC分类号： B01D45/04 ; B01D45/06 ; B03C3/14 ; B03C3/36 ; H05K7/20 ; B01D50/00
摘要：
A filter device on electrical switch cabinets, housings for electronic systems and like equipment to be maintained free of dust and impurities while being ventilated during operation includes a labyrinth filter disposed in a travel path of ventilating air upstream of an air intake opening of the equipment to be ventilated, the labyrinth filter having means for effecting a plurality of changes in direction of flow of the ventilating air therethrough so as to function in a manner similar to that of a mechanical labyrinth seal.
公开/授权文献
- US5965658A Carbonaceous friction materials 公开/授权日：1999-10-12