发明名称 FRICTIONAL AND GRAVITATIONAL DOOR SECURITY DEVICE
摘要 A door security brake that applies a combination of frictional and gravitational force sufficient to secure a door against intrusive force, yet is easily transported in and out of its door securing position. Frictional force is provided by interchangeable frictional pads that face the floor adjacent to a door. Gravitational force is provided by a reservoir which can be filled with a variety of weight materials. Methods for transporting, employing, and storing a door security brake.
申请公布号 US2011140463(A1) 申请公布日期 2011.06.16
申请号 US20090635735 申请日期 2009.12.11
申请人 NALEPKA SEAN MICHAEL 发明人 NALEPKA SEAN MICHAEL
分类号 E05C17/54 主分类号 E05C17/54
代理机构 代理人
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