发明授权
US08997777B2 Fire hydrant security integrated flow control/backflow preventer insert valve
有权
消防栓安全综合流量控制/防回流阀插入阀
- 专利标题: Fire hydrant security integrated flow control/backflow preventer insert valve
- 专利标题(中): 消防栓安全综合流量控制/防回流阀插入阀
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申请号: US13550585申请日: 2012-07-16
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公开(公告)号: US08997777B2公开(公告)日: 2015-04-07
- 发明人: Albert Montague
- 申请人: Albert Montague
- 申请人地址: US NY Brooklyn
- 专利权人: Albert Montague
- 当前专利权人: Albert Montague
- 当前专利权人地址: US NY Brooklyn
- 代理机构: Kramer Levin Naftalis & Frankel LLP
- 主分类号: E03B7/10
- IPC分类号: E03B7/10 ; E03B9/02 ; A62C35/20 ; A62C35/68 ; E03B9/04 ; E03C1/10
摘要:
Integrated flow control backflow preventer valve (“IFCBPV”) for new and existing wet- and dry-barrel fire hydrants, with barrel drain assemblies for dry-barrel hydrants, and hydrants equipped with such IFCBPVs, are presented. An exemplary IFCBPV can have a retaining screen comprising equidistant concave radial spokes intersecting at a central ring structure, a freely suspended check ball, and a lower ball seat with a seal. The upper surface of the retaining screen can be affixed to the hydrant's axial shaft, and can thus be used to open and close the hydrant via the ball. Alternatively, the retaining screen can be fixed and the axial shaft provided with a cup on its bottom that mates with the freely suspended ball that is caged between the retaining screen and the ball seat. An exemplary barrel drain assembly can comprise a spring-loaded piston, or alternatively, a check ball design as in the main barrel.