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| Number | Title | Issue Date |
| 7334740 | Method and apparatus for melting snow and ice Disclosed in this invention is a method and device for de-icing, snow melting and thawing frozen ground. The invention is based on warm moisture-laden air that can be blown over the surface to be iced or thawed or it can be introduced into an enclosed area where de-... | 02/26/2008 |
| 7314039 | Method of controlling operation of a liquid-fuel combustion appliance A method of controlling operation of a liquid-fuel combustion appliance. The method is characterized by including an “antiseize operating mode” in which an electric motor and a fuel pump, powered by the electric motor, are started periodically to prevent oxidati... | 01/01/2008 |
| 7093608 | Vacuum pressure breaker and freeze protection for a water flushing system A water flushing system for a pressurized subterranean water distribution system includes an inlet conduit for receiving pressurized water from the subterranean water distribution system; an outlet fluidly connected to the inlet conduit for discharging pressurized w... | 08/22/2006 |
| 6761135 | Multipurpose assembly A combination capable of providing all of the functions of a ground heater and a pressure washer in a more economical, convenient and effective manner by employing and engine, as pump, a generator, a burner, a boiler, a water tank, a float tank, a ground heater hose... | 07/13/2004 |
| 6622930 | Freeze protection for hot water systems In installations with water circuits such as domestic hot water or hydronic heating circuits a circulator pump is connected with a temperature sensor which energizes the pump as soon as the temperature of the water in the system falls below a predetermine... | 09/23/2003 |
| 6536458 | Device for heating a tap The aim of the invention is to prevent outer taps from being damaged by the effects of frost. To this end, the invention provides a heating device for heating a tap (1) with an electrothermal converter (2) means. Said heating device is mounted in or on th... | 03/25/2003 |
| 6196246 | Freeze-resistant plumbing system in combination with a backflow preventer A plumbing system which, when ambient outdoor temperatures drop below freezing, circulates water to prevent it from freezing, utilizing a check valve to prevent water from flowing back into the water main and further utilizing a relief valve which can ope... | 03/06/2001 |
| 6089221 | Space heater A space heater for heating air from within a room with a heat exchanger connected to a burner and discharging heated air into the room has a room temperature sensor for detecting a room temperature and a controller for controlling the burner with a freeze... | 07/18/2000 |
| 5900178 | Device for melting snow or ice An installation for melting of snow or ice, e.g. at roof downpipes on flat roofs, in gutters and the like, comprising a heating means (11), a temperature sensor means (4,6) and a control unit (1) for connecting and disconnecting the heating means (11) in ... | 05/04/1999 |
| 5730168 | Pipe burst protection pressure relief apparatus for plumbing fixtures According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A normal shut-off seal i... | 03/24/1998 |
| 5692535 | Icing preventer with temperature adjustment washer Apparatus for automatically opening an orifice to allow flow when ambient temperature drops below a predetermined level, such as the freezing point of water. The apparatus is for connection to a liquid line that carries liquid at a selected pressure for p... | 12/02/1997 |
| 5643482 | Snow melt control system A snow and ice melt control system is provided to melt snow and ice from a slab, a temperature sensor means are provided at the input and output from the slab, and a differential temperature is generated reflecting the condition of the slab in respect to ... | 07/01/1997 |
| 5553636 | Watering through fill valve control For use with a watering trough fill control valve having float structure located to rise as water is filled into the trough via the valve, and to effect closing of the valve when the trough is filled to predetermined extent, the float structure located to... | 09/10/1996 |
| 5538031 | Recreational vehicle winterizing device A recreational vehicle winterizing device adapted for use in association with a recreational vehicle including a water supply system with a plurality of interconnected rigid pipes, the apparatus comprising: a canister formed in a hollow cylindrical config... | 07/23/1996 |
| 5488968 | Fluidizing system and method A fluidizing apparatus, such as a winterizing apparatus, and related method for preventing freezing of water in the water pipes of a dwelling. The apparatus includes a pump, an inlet line, an outlet line, a pressure switch, and an air compressor tank. The... | 02/06/1996 |
| 5361795 | Furnace waste water freeze protection method A method to prevent freezing of water in a conduit that carries the water out of a building. The method uses a device that alternately accumulates the water in a container and then dumps it. The water is then carried to the outside of the building through... | 11/08/1994 |
| 5287876 | Water piping system The present invention provides a water piping system wherein when a predetermined time elapses after the flow of the water in a hose has stopped, the water is drawn out of the hose, thereby preventing proliferation of various bacteria in the water standin... | 02/22/1994 |
| 5240179 | Anti-freeze assist apparatus A method and an apparatus to aid in the prevention of pipe freezing. This method utilizes fluid in motion to help pipes resist freezing. When initiated by the control circuit, fluid flows through the pipes to prevent freezing. The control system utilizes ... | 08/31/1993 |
| 5220937 | Freeze buster A water freeze prevention device is provided and includes a mechanism that is installed between a water meter and incoming water pipes to drain the water pipes to prevent the water pipes from freezing during severe cold weather conditions.... | 06/22/1993 |
| 5123262 | Cold transfer method and device The present invention relates to a method and device for cold transfer. According to the invention, in an intermediate loop (2) a cold-bearing fluid being in diphasic form, that is, a homogeneous mixture of water and ice, for example. This fluid is heat e... | 06/23/1992 |
| 5113892 | Freeze control and drain valve A pressure-activated diaphragm valve which when installed in the main up-stream side of a pressurized line, responds to signals from a control unit to shut off the main supply line and at the same time, opens a drain port on the down-stream side of the va... | 05/19/1992 |
| 5113891 | Water freeze guard valve A water freeze guard valve having a water-filled actuator chamber and a linkage assembly for transmitting linear expansion movement, caused by ice formation within the actuator chamber, to force a poppet disc against the seat of the valve supply port and ... | 05/19/1992 |
| 4967780 | Anti-freezing device An anti-freezing device for use in water supply conduits, which includes a driving chamber for imparting a drive to a main valve which is moved by the volumetric expansion due to the freezing of water therein so that the main valve is separated from a val... | 11/06/1990 |
| 4932429 | Screw stopper including anti-freeze device used for water pipe valve This invention relates to a screw stopper including an anti-freeze device used for water pipe valve and fitted to the lower end portion of an open/close movable valve of said water pipe valve comprises: a small perforation penetrated centrally on the lowe... | 06/12/1990 |
| 4928754 | Heat exchanging apparatus A heat exchanging or circulation apparatus comprising a system of conduits connected to an inlet and an outlet for circulating water or other practically incompressible liquid through the system, heat being transferred through the conduit walls, circulati... | 05/29/1990 |
| 4883082 | Temperature-responsive valve A temperature-responsive valve comprises a pair of wax-filled thermal actuators connected in series and set to expand at different temperatures respectively at the high and low limits of a temperature range. In one version, a valve element is movable by t... | 11/28/1989 |
| 4867376 | Air control system An air control device, having a panel which opens and closes in response to changes in environmental conditions in a building, preferably is sized to replace a ceiling tile in a conventional drop ceiling. The air control device may be responsive, for exam... | 09/19/1989 |
| 4852601 | Thermally-activated drip valve A self-actuating drip valve for attachment to a standard outdoor faucet for the prevention of freezing of such exposed faucets and water pipes leading to the faucet. A tube includes a collar at one end for securing to the end of the faucet. A stem extends... | 08/01/1989 |
| 4815491 | Freeze protection device For freeze protection of a water line, a T fitting in the line is provided with a removable threaded bushing having a plug with radially projecting balls which engage J-shaped slots in the bushing to provide a bayonet joint. The plug is released when free... | 03/28/1989 |
| 4809727 | Thermally-activated drip valve A self-actuating drip for attachment to a standard faucet for the prevention of freezing of such exposed faucets and water pipes leading to the faucets. An elongated housing includes a collar for securing one end of the housing about the open end of the f... | 03/07/1989 |
| 4784173 | Water freeze prevention valve A freeze prevention device for water systems includes a relief valve and an actuator having an elongated chamber which contains water and segments that sequentially sense the incremental expansion caused by ice formation therebetween. The segments are axi... | 11/15/1988 |
| 4766925 | Dump valve assembly Dump valve assembly for a cooling system in which the coolant is water without antifreeze, the system having a compressed air-operated dump valve supplied with operating air from a special reservoir charged through a check valve with compressed air from a... | 08/30/1988 |
| 4763682 | Thermally responsive valve activating assembly A valve activating system is provided, which is intended for association with a valve assembly including a valve housing defining a conduit therein which includes a fluid inlet opening and a fluid outlet opening, and a valve which is normally biased in a ... | 08/16/1988 |
| 4757718 | De-icer for a transducer assembly A transducer assembly having a housing provided with an inlet port which is adapted for communication with an exhaust passage of an internal combustion engine. The housing includes at least one pressure chamber to which the inlet port opens and an apparat... | 07/19/1988 |
| 4730637 | Fluid loss, damage prevention and control system The invention relates to a fluid flow monitor and control system which prevents excessive fluid loss and property damage. The invention warns of impending distribution pipe freeze conditions, or ruptures from other causes, shuts off the fluid supply, and ... | 03/15/1988 |
| 4672990 | System for freeze protection of pipes A system for freeze protection of pipes is provided, comprising a cold water supply line, connected to a main water supply line at one end and to at least one cold water fixture at the other end; a hot water tank having an inlet and an outlet; a hot water... | 06/16/1987 |
| 4657038 | Apparatus for preventing water pipe freeze-up An automatic liquid flow control unit is adapted to be attached to an externally threaded spigot to enable liquid to trickle therethrough in order to avoid liquid freeze-up. The unit includes a rigid conduit which includes an internally threaded fastener ... | 04/14/1987 |
| 4649959 | Antiburst system for water lines An antiburst system for water lines. A pipe has an inlet connected to a source of water and an outlet. A flexible tube is positioned in the pipe and is supported by a coiled spring extending along the longitudinal axis of the tube. An air vent section is ... | 03/17/1987 |
| 4638828 | Water temperature actuated drip valve An automatically operated valve to prevent freezing of water lines. The valve is elongated, having threads on one end to be received in a conventional plumbing tee or the like, or in a threaded opening in a faucet. The opposite end discharges water during... | 01/27/1987 |
| 4541448 | Freeze protection valve with metal to plastic fitting design The freeze protection valve includes a molded plastic valve housing (A) including a peripheral wall (10) which defines an elongated recess (12) therein. The valve housing includes a first seating region (18) surrounding the elongated recess open end, a dr... | 09/17/1985 |
