Sewer pipe gas exhaust filter apparatus
OwnerMark McIntireinventor
Life of this patent
Estimating the term…
Abstract
A sewer pipe gas exhaust filter apparatus includes a sewer vent valve unit connected to a sewer pipe and including a valve member moved into and out of engagement with a valve seat by a float member, a gas filter unit connected to the sewer vent valve unit and including a gas filter medium, and a gas flow valve arrangement to cause gases from the sewer to flow through the filter medium while bypassing air drawn into the sewer pipe past the gas filter unit. The filter medium of the gas filter unit removes chemical components from air and gas exhausted from the sewer pipe, thereby improving the odor of such exhausted gases.
Claims10
A sewer venting apparatus for use in venting gases out of and into a sewer pipe adapted to carry sewage and comprising:
- (a) a sewer vent valve mechanism having an input communicating with a sewer pipe and an output, said valve mechanism enabling outflow of sewer gases from said sewer pipe and inflow of air from the atmosphere into said sewer pipe while preventing outflow of liquid sewage through said vent valve mechanism;
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- (b) a gas filter unit communicating with said output of said valve mechanism to thereby filter sewer gases outflowing from said valve mechanism through said filter and into the atmosphere.
A sewer venting apparatus for use in venting gases out of and into a sewer pipe adapted to carry sewage and comprising:
- (a) a sewer vent valve mechanism having an input communicating with a sewer pipe and an output, said valve mechanism enabling outflow of sewer gases from said sewer pipe and inflow of air from the atmosphere into said sewer pipe while preventing outflow of liquid sewage through said vent valve mechanism;
- (b) a gas filter unit communicating with said output of said valve mechanism to thereby filter sewer gases outflowing from said valve mechanism through said filter and into the atmosphere;
- and
- (c) a filter check valve assembly engaged with said filter unit in such a manner as to cause gas outflowing from said sewer vent valve mechanism to flow through said filter unit and air drawn into said sewer vent valve mechanism to bypass said filter unit.
A sewer venting apparatus for use in venting gases out of and into a sewer pipe adapted to carry sewage and comprising:
- (a) a sewer vent valve mechanism having an input communicating with a sewer pipe and an output, said valve mechanism enabling outflow of sewer gases from said sewer pipe and inflow of air from the atmosphere into said sewer pipe while preventing outflow of liquid sewage through said vent valve mechanism, said vent valve mechanism including:
- (1) an elongated housing having said input at a lower end which is in flow communication with said sewer pipe and said outlet at an upper end, said output being vertically spaced from said input;
- (2) a sewer vent valve member with a valve seat, said sewer vent valve member enabling flow through said valve seat when separated therefrom and preventing flow when engaged with said valve seat;
- (3) a valve control rod connected at an upper end to said sewer vent valve member and having a lower end;
- (4) a buoyant float member secured to said lower end of said valve control rod;
- (5) said float member having sufficient weight to hold said valve member in an open position in the absence of liquid within said housing to enable outflow of gas from said sewer pipe and inflow of air into said sewer pipe;
- and
- (6) said float member being raised by liquid within said housing at a selected height and closing said valve member by way of said control rod to thereby prevent discharge of liquid through said outlet of said sewer vent valve mechanism.
- (b) a gas filter unit communicating with said output of said valve mechanism to thereby filter sewer gases outflowing from said valve mechanism through said filter and into the atmosphere, said gas filter unit including an activated carbon medium positioned in said gas filter unit to filter selected chemical components from said serer gases;
- and
- (c) a filter check valve assembly engaged with said filter unit in such a manner as to cause gas outflowing from said sewer vent valve mechanism to flow through said filter unit and air drawn into said sewer vent valve mechanism to bypass said filter unit;
- said filter check valve assembly including:
- (1) a one-way outlet check valve in flow communication with said filter unit and enabling outflow of gas from said vent valve mechanism through said filter unit;
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- (2) a one-way inlet check valve in flow communication with said vent valve mechanism to enable flow of air into said vent valve mechanism without passing through said filter unit.
Dependencies are inferred from the claim text.