VALVE DEVICE FOR WASTE PIPE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 25, 2015
app pub date -
May 28, 2013
filing date -
May 28, 2012
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
Plumbing apparatus (10) for incorporation in a waste pipe system comprises a tubular body having an inlet (14) for connection to an upstream waste pipe and an outlet (16) for connection to a downstream waste pipe. A one-way water valve (22) is provided in the body and is arranged to permit flow from the inlet to the outlet and to prevent flow from the outlet to the inlet. An air valve (24) is mounted on an upper portion of the body and is arranged to permit flow of air into the body and to restrict flow of air out of the body. In the event of negative pressure in the downstream waste pipe system the air valve opens to allow air to be drawn into the system. In the event of positive pressure in the downstream waste pipe system the one-way water valve closes.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully