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Class 138/32 - THAWING AND FREEZE PROTECTION


Subclass of Class 138 - Pipes and tubular conduits
Definition: Devices for thawing the frozen fluid in pipes or pipes having
No. of patents: 87
Last issue date: 05/25/2010


1      
NumberTitleIssue Date
7721766Fluid transfer tube
A problem solved by this invention is to enable prevention of damage to a connector in a fluid transfer tube that is made by mounting a connector to an end of a tube, even when an outside air temperature falls below freezing point. The problem is solved as follows. ...
05/25/2010
7402029Remedies to prevent cracking in a liquid system
A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig...
07/22/2008
7278549Remedies to prevent cracking in a liquid system
A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are desig...
10/09/2007
7275565Multi-conduit, multi-nozzle fluid distributor
An apparatus for distributing a fluid is disclosed. The apparatus comprises a plurality of conduits and outlet ports that are capable of providing improved distribution of fluids. One or more conduits are arranged within a single conduit, which provides a compact an...
10/02/2007
7260320Electric heat tracing
Heat tracing of an elongate, thermally-insulated substrate is effected by means of one or more elongate, constant wattage electric heaters mounted in thermal contact therewith beneath the thermal insulation. A metal conduit is mounted on the substrate and extends aw...
08/21/2007
7200969Down spout guard made from non-woven material
A non-woven mesh guard which can be inserted into a downspout opening in a rain gutter in order to prevent debris from entering the downspout is provided. The non-woven mesh includes a large free area to allow for the flow of water therethrough while preventing debr...
04/10/2007
7182126Fluid heater
A heat distribution apparatus comprising a fluid conduit having a peripheral wall defining a flow passage and a pair of fluid capillaries extending along the wall and secured thereto. The capillaries being connected to one another in series to provide a fluid flow p...
02/27/2007
7137414Fluid transfer apparatus
The fluid transfer apparatus has an outer composite body having end sealing lips that are adapted to sealingly engage the surface surrounding the spaced passages between which fluid is to be transferred. The transfer apparatus has a central member having a uniform c...
11/21/2006
7089962Compensation device for compensating volumetric expansion of media, especially of a urea-water solution during freezing
A compensation device for compensating a volumetric expansion of a medium during freezing has a receptacle provided in a structural component. The medium is contained in the receptacle. A sealing element is provided that delimits the receptacle. The sealing element ...
08/15/2006
7028715Heated drain line apparatus
A drainage device and method of decreasing clogging in a drain pipe comprising heating the drain pipe with a heating element that is partially enclosed. ...
04/18/2006
6978825Device and process for the heat insulation of at least one underwater pipe at great depth
The present invention relates to a device for the heat insulation of at least one underwater pipe (1) intended to be laid on the sea bed at great depth, comprising an insulating coating surrounding the latter and a protective envelope (3), characterize...
12/27/2005
6976809Method of preventing frost heave stress concentrations in chilled buried pipelines
A method for maintaining a stable soil by surrounding a chilled gas pipe with a material that has an antifreeze component that prevents the soil from freezing. By keeping the soil from freezing, it remains stable at all times. The method calls for excavating a trenc...
12/20/2005
6948509Fluid hydrant
A hydrant comprising a chamber forming a reservoir, an inlet configured to supply fluid to the hydrant and a sleeve configured to force static fluid out of an outlet, wherein a first portion of the chamber containing the reservoir is configured to be located in the ...
09/27/2005
6939082Subea pipeline blockage remediation method
The method of taking a remotely operated vehicle to the ocean floor to land on and move along a subsea pipeline above or below the seafloor and repeatedly circulate seawater which has been heated electrically, mechanically, or chemically across the outer surface of ...
09/06/2005
6883534Freeze protection device for wall hydrants/faucets
A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A valve seat is located on ...
04/26/2005
6857442Freeze protection device for wall hydrants/faucets
A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A movable ball is located w...
02/22/2005
6830063Freezeless protection device for wall hydrants/faucets
A freezeless wall hydrant is provided that has an elongated inlet pipe comprised of a hollow tube. The tube is connected to a valve and fitting assembly on its inner end for connection to a source of water under pressure. On the outer end, the tube is connected to a...
12/14/2004
6830062Spigot freeze dripper
A dripper apparatus for a water spigot includes a coupler having a threaded female member for connecting to a water spigot. A generally cylindrical elongate member has a longitudinal portion in fluid communication with the female member. The longitudinal portion has...
12/14/2004
6810916Heated drain line apparatus
A drainage device and method of decreasing clogging in a drain pipe comprising heating the drain pipe with a heating element that is partially enclosed. ...
11/02/2004
6805154Freeze protection device for wall hydrants/faucets
A freezeless wall hydrant has a fluid inlet end connected to a source of pressurized water, and a fluid outlet end. A check valve is placed in the bore of the valve body and is spring loaded to open only when extreme water pressure within the inlet valve lifts a spr...
10/19/2004
6782908Automotive washer system utilizing a freezable washer liquid and a freeze-resistant washer liquid
A washer system which includes a first reservoir containing a freezable washer liquid and having a drain port therein. The drain port is in fluid communication with the freezable washer liquid when the first reservoir is in at least a full state. The washer system a...
08/31/2004
6769446Freeze protection device for wall hydrants/faucets
A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A valve seat is located on ...
08/03/2004
6601607Sump pump discharge water escape system
A sump pump discharge system having a water escape member interposed between a sump pump exit pipe and a drain pipe, such water escape member being a truncated conical structure having a plurality of upright ribs extending from its base to its top definin...
08/05/2003
6532986Freeze protection device for wall hydrants/faucets
A freezeless wall hydrant has a fluid inlet end connected to a source of pressurized water, and a fluid outlet end. A check valve is placed in the bore of the valve body and is spring loaded to open only when extreme water pressure within the inlet valve ...
03/18/2003
6513577Device and process for the heat insulation of at least one underwater pipe at great depth
The present invention relates to a device for the heat insulation of at least one underwater pipe (1) intended to be laid on the sea bed at great depth, comprising an insulating coating surrounding the latter and a protective envelope (3), characterized i...
02/04/2003
6394125Leak-containing sheath for frost-resistant hydrant
A combination sheath and frost-resistant wall hydrant include a hydrant having a wall-penetrating conduit and intermediate wall bracket. There is an internal valve seat between the bracket and indoor or inlet end, and so is located in a presumptively warm...
05/28/2002
6338364Insert for freeze protecting water pipes
The invention is a round, flexible, hollow tubular insert to be affixed in a central position within pressurized sprinkler pipes, water pipes and water mains. The insert will be employed to prevent sprinkler pipe, water pipe and water main ruptures due to...
01/15/2002
6328058Hose clearing device
A hose clearing device has a valve assembly at one end thereof, preferably a compressed air receiving valve; and, at the opposing end thereof, an attaching means for attaching the valve assembly to an elongated tube, the elongated tube requiring the subst...
12/11/2001
6223775Accumulator
A pump for moving a fluid has a housing with a internal chamber accommodating a pair of rotating pistons. Each piston has protrusions that register with pockets in the other piston in non-contact relation as the pistons rotate. A fluid accumulator in flui...
05/01/2001
6216722Freeze-resistant hydrant
A freeze-resistant hydrant (10, 110) extending between a first area having a temperature at least intermittently below freezing and a second area having a temperature constantly above freezing including, a heat-transfer tube (20, 120), a first end (21, 12...
04/17/2001
6158455Antifreeze cap for faucet
A cap assembly for providing continuous drip to a faucet exposed to freezing temperatures such as a faucet located outside a house. The cap assembly includes a cap member adapted to be mounted over the end of a faucet, which cap member includes a cylindri...
12/12/2000
6128439Hot pipe coupling means for joining together two segments of pipe
A heating pipe including a substantially tubular, electrically insulative inner element configured to allow flow of a liquid therethrough. An electric heating element in the form of a substantially flat ribbon of overheated amorphous metallic alloy is wou...
10/03/2000
6119729Freeze protection apparatus for fluid transport passages
The present invention provides a fluid handling apparatus for use in cold temperature conditions. In this respect, the apparatus of the present invention comprises a freeze protected conduit having a length comprising an elongated conduit for conveying or...
09/19/2000
6082409Thawing tube guide for a culvert
A thawing tube guide is prepositioned at the opening of a culvert to facilitate maintenance personnel in passing a culvert thawing tube with a power head into a culvert opening which is covered by ice, snow or an ice slurry. The culvert thawing tube guide...
07/04/2000
6042120Controlled freeze seal for pipes
Instead of applying the maximum cooling effect that can be produced, the method and apparatus disclosed applies only a carefully controlled cooling that is adequate to maintain the fluid in the pipe in a frozen condition but which maintains the temperatur...
03/28/2000
6029686Thermally responsive valve
A freeze protection plug has latching balls engageable bayonet-fashion with grooves in a fitting. The balls are normally held in engagement with the grooves by a cam, but move inward to release the plug from the fitting when the cam is moved by a thermal ...
02/29/2000
6009906Method and apparatus for preventing pipe damage
An apparatus and method for protecting a pipe from damage due to excessive internal pressure, such as the pressures resulting from water freezing within the pipe. A compressible core apparatus is disclosed for placement within the pipe. Methods for placin...
01/04/2000
5979505Sewer vent deicer
A sewer vent deicer for reducing the accumulation of ice within the exhaust portion of the sewer vent pipe during cold weather by increasing the flow of warm sewer gases through the sewer vent pipe. The inventive device includes a cap defining a cavity, a...
11/09/1999
5857480Water purging system
A water purging system is disclosed. The system includes a primary water line having a first end with threads for the receipt of a faucet constituting a source of water and a second end with threads for coupling to a supplemental water line adapted to be ...
01/12/1999
5797416Faucet and water pipe freeze-protection device
A device which protects water faucets and water pipes to which they are attached from freezing or breaking due to freezing of water contained therein. The device comprises a closed-ended nipple which is axially and/or radially expandable to accommodate fr...
08/25/1998
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