Original document(11 pages) Authorized document(11 pages) 中文版
    The present invention provides a flexible respirator filter (1) having substantially coextensive front, and back portions of filter material (3) which are sealed to each other along their periphery, forming a sealed edge. A flexible plastic frame (4) is contained within the front, the back portions (2, 3) to form a plenum (17) between the front, and back portions (2, 3) of filter material (3). A connector (10) for attaching the filter (3) to the respirator mask is formed integrally with the frame (4) such that it protrudes through the back portion (3) of the filter material (3). A plurality of recesses are also formed integrally with the frame to facilitate grasping the filter (1) without crushing or damaging it.
Application Number
申请号		 99812462 Application Date
申请日		 1999.10.21
Title 名称 Flexible respirator filter
Publication Number
公开号		 1326370 Publication Date
公开日		 2001.12.12
Approval Pub. Date 2003.12.31 Granted Pub. Date 2003.12.31
International Classification 分类号 A62B7/10;A62B18/08
Applicant(s) Name
申请人		 Mine Safety Appliances Co.
Address 地址
Inventor(s) Name 发明人 T.M. Salapow;R.P. Wolf;P.A. Zeller
Attorney & Agent 代理人 zhang lanyang

  
Buckle assembly for adjusting straps for headgear
Band putter
Foam core in-line skate frame
Cyclonic evaporator
Slow sand filter for use with intermittently flowing water supply and use thereof
Electrocatalytic method and device for removing carbon monoxide from hydrogen-rich gas
Method and apparatus for removing floating substances and salts from liquid by membrane filtration
Catalysts for catalytix oxidation of propane to acrylic acid, and methods of making and using
Multiple-container systems with improved sensitivity for optical analyses
Container with pressure-released closure
Note:All patent data come from State Intellectual Property Office of the People's Republic of China. If there were discrepancies between here and the State Intellectual Property office, the later is more accurate. The patent data is only for public exchange and learning purposes. We are not responsible for the adverse consequences with unverified use of the data.