Invention Grant
- Patent Title: Pressure relief device
- Patent Title (中): 减压装置
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Application No.: US13251377Application Date: 2011-10-03
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Publication No.: US08850628B2Publication Date: 2014-10-07
- Inventor: Hager H. S. A. Faredon
- Applicant: Hager H. S. A. Faredon
- Agency: Lowe Hauptman & Ham, LLP
- Main IPC: E03D9/04
- IPC: E03D9/04 ; E03C1/122

Abstract:
A pressure release device for preventing pressure build-up in a sink, shower or tub drain includes an elongated tubular member having an elongated passageway extending therethrough. A partially closed top with a plurality of openings therein and an open bottom and means for disposing the device in a drain with an upper portion of the device extending upwardly by at least about 1 cm above an opening to the drain and a bottom of the device extends downwardly in the drain at least 1 and preferably about 2 cm below the opening of the drain.
Public/Granted literature
- US20130081717A1 PRESSURE RELIEF DEVICE Public/Granted day:2013-04-04
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