专利内容由知识产权出版社提供
专利名称：A valve device
发明人：McDonald, Kevin,Hardy, Michael Harry申请号：EP90307702.2申请日：19900713公开号：EP0409506B1公开日：19921007
摘要：A valve device 1 for admitting air to a pipe such as a stack pipe 2 in a domestictoilet system is shown. The valve device 1 comprises a body 3 adapted to be mounted onthe pipe 2 at an open end 4 of the body 3 which has a closed end provided by an endclosure or a cap 5 with a depending skirt 6 which reaches to the lower (as viewed) limit ofan opening 7 in the body 3 to atmospheric air. The body 3 has an internal wall 8 whichextends part way across the body 3 internally, the internal wall 8 having a through orificeor hole 9 and being part cylindrical. An upwardly extending part 10 of the wall 8 and apart 11 terminate in a nose 12 which supports the underside of a valve member 13.
申请人：POLYPIPE PLC
地址：BROOMHOUSE LANE; EDLINGTON, DONCASTER, YORKSHIRE DN12 1ES
代理机构：Johnson, Terence Leslie
更多信息请下载全文后查看