Class 137/247.25 - Seal replenishers

Subclass of Class 137 - Fluid handling
Definition: Devices having (1) a distinct compartment with a restricted
No. of patents: 26
Last issue date: 04/17/2007

Number	Title	Issue Date
7204267	Modular rough-in plumbing accessary The modular plumbing accessary utilizes an open sided box secured during rough-in to and between exposed wall studs. A unitary water pipe and anti-hammer assembly is connected to the box with only an outlet pipe exposed in the box interior. The water inlet pipe and ...	04/17/2007
7191606	Drain trap alarm A Drain Trap Alarm for Heating Ventilation Air Conditioning condensate drain system includes a upstream port coupled to the cooling coil drain tray followed with a U-type trap and a downstream port coupled to the external atmosphere. The invention is provided with a...	03/20/2007
6834665	Automatic adjustable trap priming valve An automatic adjustable trap priming valve includes a housing through which inlet water to a frequently used plumbing fixture flows; a diverter member which extends across the housing, the diverter member providing an interior passageway which communicates with a de...	12/28/2004
6629621	Gauge hatch with liquid seal A gauge hatch is provided that has a cover structure that incorporates a pallet/diaphragm combination and that is cooperatively associated with a pressure responsive liquid seal subassembly. The gauge hatch also incorporates a vent neck and a radially adj...	10/07/2003
6422260	Trap primer A trap primer that includes a spring-loaded piston wherein the trap primer includes a body and the piston is slidably received therein and includes a plurality of circumferentially-spaced fingers....	07/23/2002
6325091	Water distribution apparatus for multiple sewer drain trap primer systems An apparatus for distributing priming water equally to a multiplicity of sewer drain traps includes a hollow body member sealed with a top cap having a water inlet therethrough, the bottom of the body member provided with outlet fittings for connecting to...	12/04/2001
6152164	Pressure-drop activated trap seal primer valve A trap seal primer valve for automatically charging water into a sewer line trap from a water line containing water under variable pressure....	11/28/2000
6056005	Vent valve with liquid seal A vent valve is provided wherein a pallet/diaphragm type valve is cooperatively and coactively associated with a pressure responsive liquid seal. The assembly eliminates low level fugitive vapor emissions escaping from the diaphragm/seat region up to a pr...	05/02/2000
6041809	Two stage flush control valve assembly A control valve assembly for flushing a sanitary fixture includes a burst valve for supplying flush water flow at the beginning of a flush cycle and an independently controlled bypass valve for providing trap reseal flow after the burst valve closes. The ...	03/28/2000
5797419	Sewer line trap priming assembly and antisiphoning conduit component therefor An automatic sewer line trap priming assembly including a gap type, anti-siphoning conduit component. A shielded and directed jet at timed intervals directs priming water increments into a receiving funnel which communicates with the trap....	08/25/1998
5678588	Sewer line multiple trap priming system and method A sewer line multiple trap priming system comprises a house line and a plurality of branch lines all communicating with each other and supplied with water under pressure. A plurality of makeup priming water lines are connected, one to each of the traps. I...	10/21/1997
5287877	Sewer drain trap primer valve A sewer drain trap primer valve includes a case defining a volume; a flexible diaphragm separating the volume into an upper, water chamber and a lower, sealed, air chamber; a conduit connecting the water chamber with an outlet orifice defined by a lower e...	02/22/1994
5263508	Sewer line water trap charging valve with improved adjustment for house line pressure changes A device for charging sever line traps automatically upon decrease in main line water pressure comprising a branch line having a piston valve member telescopically received over the end of an adjustable tubular member, the piston having a first seat for s...	11/23/1993
5253670	Multiple drain trap primer valve assembly for sewer lines A multiple drain trap primer valve assembly. The assembly comprises a plumbing conduit system including a house line 10 carrying water under pressure and a plurality of branch lines 12 each serving the drain trap 14 of a particular plumbing fixture. A man...	10/19/1993
5184640	Back water trap The invention relates to a device for preventing communication through pipe lines of high security institutions. A flapper valve is provided with a valve seat having a plurality of teeth extending into the center of the opening formed in the valve seat. A...	02/09/1993
4880027	Method of and apparatus for regulating the flow of at least one gas stream The evacuation of foul smelling gases from the interior of a toilet bowl is effected by a fan which is driven by an electric motor and conveys the gases from the bowl through a control chamber in the flushing tank and into an evacuating conduit which is c...	11/14/1989
4773441	Liquid seal vent The subject of this invention is a liquid seal vent, identified further in this specification as a "device", for use on a gas-blanketed liquid storage tank in safety-related applications where, due to safety reasons, the "device" must be functional even a...	09/27/1988
4728486	Pressurized water nuclear reactor pressure control system and method of operating same A pressure control system for a pressurized water nuclear reactor and method for quickly closing the valves associated with the pressurizer thereof has a temperature detection device on the loop seal of each valve and a valve responsive thereto to change ...	03/01/1988
4574399	Flushing, toilet tank-fed, primer valve for sewer line drain traps A primer valve for sewer line drain traps is adapted for use in conjunction with a flushing toilet or like installation including a tank containing water of fluctuating level. The primer valve comprises a pipe penetrating the lower portion of the tank and...	03/11/1986
4502500	Water traps A water trap comprises a body 10 which defines a passage having a downwardly extending portion 11 which in use communicates with the interior of a building and leads to a transverse portion 12 passing under a barrier 18. The transverse portion 12 leads in...	03/05/1985
4497337	Floor trap primer valve A valve for automatically charging water into a sewer line trap from a water line containing water under variable pressure comprises a case having a longitudinal bore and means for connecting the case in series flow in the water line. A hollow shaft is mo...	02/05/1985
4249559	Reliable trap filling device for siphon apparatus In a siphon apparatus having at least two legs with a liquid trap therebetween, a liquid holding chamber is provided which communicates with the liquid trap through a restrictive orifice and which fills the liquid trap after the siphon is used, thereby in...	02/10/1981
4222405	Pressure vacuum breaker Excess steam pressure is relieved by displacement of a column of water through a vertical conduit opening a path for escape of steam through a space normally occupied by the water which normally acts as a seal. Under reversed conditions, air enters when t...	09/16/1980
4218786	Water saving trap primer A primer is disclosed for installation in a floor drain water trap located in a lower position relative to a sink drain and sink water trap. A first fitting is disposed upstream of the floor drain water trap. A second fitting is disposed in the sink drain...	08/26/1980
4204556	Self-contained, automatic primer valve for sewer line drain traps A primer valve for sewer line drain traps comprises a case having an upper water inlet communicating with the pressurized house line and a lower water outlet communicating with the trap. The hollow interior of the case is divided into a lower valved dispe...	05/27/1980
4193967	Liquid sealing apparatus for sealing vapors in a tank A liquid sealing apparatus for attachment to a tank having vapor having a liquid seal for providing containment of the vapor throughout a range of tank pressure. An inert gas supply may be provided to maintain the pressure in the tank at a predetermined p...	03/18/1980

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Class 137/247.25 - Seal replenishers