Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7874500 | Snow making apparatus A snow making apparatus of the low profile snow gun type or of the tower type having independent and co-extending air and first water conduits supported above ground. Air and first water discharge nozzles are connected to the upper ends respectively of these conduit... | 01/25/2011 |
| 7770816 | Lance head for a snow lance and nozzle arrangement In a snow lance head for use with a snow lance with a housing having nozzles for the outlet of water and/or air and with at least one first chamber formed in the interior of the housing, through which water emerging from at least some of the nozzles flows, the surfa... | 08/10/2010 |
| 7311266 | Freeze-proof water valve for supplying secondary water to snow making apparatus A freeze-proof water valve (10) for supplying secondary water under pressure in freezing ambient conditions to a snow making apparatus (11) having primary water spray nozzles (12) and secondary water spray nozzles (13,14). The valve housi... | 12/25/2007 |
| 7306045 | Multi-stage fluid power turbine for a fire extinguisher A multi-stage fluid power turbine having application as a fire extinguisher to be ideally carried by a fire truck (e.g., a tanker or a pumper) so as to fight outdoor fires. An impeller and a propeller are located at one end of the fire extinguisher, and a fan is loc... | 12/11/2007 |
| 7303156 | Generation and usage of microbubbles as a blood oxygenator A micro-nozzle for generating micro-bubbles. The micro-nozzle includes a liquid inlet forming a liquid path, a gas inlet, and a constricting wall positioned in the liquid path and shaped to abruptly constrict said liquid path to a width of less than approximately 20... | 12/04/2007 |
| 7303145 | Vehicles and bulk material distribution apparatuses including air flush system and methods An air flush system for a spraying system includes an air compressor unit and an inverter. The air compressor unit integrally comprises a compressor including an electric motor configured to operate upon receipt of alternating current voltage, a tank provided in flu... | 12/04/2007 |
| 7290722 | Method and apparatus for making snow An elongated pipe conduit snow making tower, and assembly method, having an upper end spray nozzle head and pivotally supported on a support pipe for vertical inclination by a hydraulic ram jack enabling infinite non-preselected incremental inclinations. A ram safet... | 11/06/2007 |
| 7225999 | Spray array apparatus Spray array apparatus which includes a plurality of water and air carrying spoke members extending radially from a central fluid distribution assembly. The spoke members are connected to a plurality of water and air carrying strut members. The spoke members are divi... | 06/05/2007 |
| 7137568 | Apparatus and method for flow diverter A flow diverter for diverting an initial flow stream of pressurized fluid from a source of pressurized fluid. The flow diverter comprises a housing having an upstream end, an inlet opening in the upstream end, a downstream end generally opposed to the upstream end, ... | 11/21/2006 |
| 7131598 | Snow-gun A snow-gun for producing man-made snow from a combination of compressed air and water features a new nozzle configuration for discharging a mixture of water-particles and air into the surrounding atmosphere. Such nozzle is provided with an elliptically-shaped discha... | 11/07/2006 |
| 7128276 | Method for mixing fluids The use of a turbulent contactor to absorb a selected gas component from a gas stream. The invention particularly applies to a method of distributing a liquid into a gas stream which comprises providing a liquid to an annulus at the periphery of a pipe in which a ga... | 10/31/2006 |
| 7124958 | Controlled snow-making process and apparatus A method and apparatus suitable for producing an artificial snow surface for tire evaluation is provided. The process provides for manufacturing a series of snow layers, each layer followed by a packing and a grooming step to provide a multi-layered snow surface. De... | 10/24/2006 |
| 7114662 | Snow making using low pressure air and water injection Snow is made, for use on ski slopes and the like, using compressed air at a pressure substantially less than 95 psig, preferably around 30 psig. The air is provided to a snow making head or snow gun, where it is flowed through an air nozzle having effective diameter... | 10/03/2006 |
| 7062926 | Snow making Method for making snow wherein snow is made within a closed environment by discharging water droplets into a body of air maintained by air conditioning means at a temperature and humidity such as to turn the water droplets into snow, falling on to a surface includin... | 06/20/2006 |
| 7036676 | Foldable water tank A foldable water tank comprises a foldable receptacle having a bottom wall and vertical sidewalls, the sidewalls being inclined inwardly; and a plurality of support structures connected to the sidewalls to support the sidewalls in the inclined position. ... | 05/02/2006 |
| 6994278 | Device for spraying water in the form of a thin-walled hollow jet for the formation of artificial snow The spraying device comprises: a tubular body which defines a chamber connected to a supply of water under pressure, a nozzle (1) with atomizer and a constriction organ in the form of a valve (6) in order to form a thin-walled hollow jet. The orifice (... | 02/07/2006 |
| 6966144 | Device and use in connection with measure for combating Apparatus and a method for controlling vermin either directly or indirectly via objects giving shelter to the vermin. Cooling of the vermin is effected by providing dry snow particles by passing pressurized carbon dioxide through a nozzle directed at the vermin. Sma... | 11/22/2005 |
| 6951308 | Snow making method and apparatus A snow making method and apparatus wherein water (3) in flexible hoses (2), within a cooling medium (1) is converted to snow and/or ice crystals. The hoses (2) are cyclically inflated and deflated to cause the crystals to be dislodged fro... | 10/04/2005 |
| 6938830 | Snow making method and apparatus A snow making method where water and/or ice is mixed with a cryogenic material, such as carbon dioxide, in a mixing vessel and the mixture is mechanically agitated or mixed to convert the water and/or ice into snow. The cryogenic material may be recovered and return... | 09/06/2005 |
| 6939465 | Fluid filter system for snow making apparatus A fluid filtering system for filtering dirt and other debris from fluids being conveyed in a pipeline for snow making apparatus and other devices. An upright pipe segment is connected to a horizontal pipe segment through a pipe elbow or angle for conveying fluid suc... | 09/06/2005 |
| 6793148 | Water-only method and apparatus for making snow A method and apparatus for producing man-made snow without using either compressed air or high-speed fans. The method makes use of a special water nozzle that is designed to provide a high volume spray of water particles that, owing to their size distribution (havin... | 09/21/2004 |
| 6719209 | Multipurpose spray head useful in particular for making artificial snow A spray head includes a sleeve provided with sprayers and divided into several chambers by a core element with several internal partitions. Each chamber is fed by passages and the main chamber is fed by a passage which passes through the cap, the cap including at le... | 04/13/2004 |
| 6691926 | Turbo-fan snow making system A snow making system comprises a cooling subsystem having a fan that draws a first air into the cooling subsystem and a turbine that expands a second air to produce an expanded air, with the cooling subsystem combining the first air and the expanded air t... | 02/17/2004 |
| 6575381 | Artificial snow producing and releasing apparatus and method thereof Primarily crushed flaky or platy pieces of ice are supplied from a supply port into a rotary blade casing of a high speed rotary snow producing and throwing apparatus toward a rotor blade in the shaft direction of a rotating shaft by strong discharge pres... | 06/10/2003 |
| 6554200 | System and method for remotely monitoring artificial snow maker of ice crushing type The present invention provides a system capable of accurately monitoring each of a plurality of snowmakers of ice crushing type which are placed on a skiing ground. The system has a monitoring device, which is placed in a monitoring station of the skiing ... | 04/29/2003 |
| 6547157 | Method and device for making snow The present invention provides a method for making snow. The method includes discharging a supply of pressurized water in ambient air, discharging a supply of pressurized air in ambient air, and controlling the discharge of the supply of pressurized water... | 04/15/2003 |
| 6543699 | Method and apparatus for making snow A snow making tower including an elongated tower conduit combination which has an elongated air conduit extending within an elongated water conduit with upper and lower ends and provided with a ground support mount. Air and first water discharge nozzles a... | 04/08/2003 |
| 6511000 | Rotary valve to feed artificial snow at constant rate An apparatus preventing adhesion, growth and freezing of ice pieces, which tend to happen with quality artificial snow such as fine flake snow and powder snow. The rotary valve 1 to feed artificial snow at a constant rate includes: impeller rotary shaft 3... | 01/28/2003 |
| 6508412 | Snow, ice particle generator, or nucleation device, integrated in a pressurized water spray head for making artificial snow A nucleation device associated with a spray head and operating by either internal mixing or external mixing. The ratio air/water is not less than 200 and the pressurized water is supplied by the spray head nozzles, which, by simple circulation of water, a... | 01/21/2003 |
| 6454182 | Snow making method and apparatus A snow making machine has at least one flexible hose assembly, with an inner hose connected to a water supply and an outer jacket to receive coolant from a chiller. Ice/snow formed in the inner hose is dislodged by inflating squasher hoses in the outer ja... | 09/24/2002 |
| 6402047 | Snow making apparatus and method The snow making apparatus includes an air tube and a water tube disposed in parallel relation and spaced apart by a predetermined distance. The air tube has a first end and a second end, the first end having an air inlet for receiving an air hose connecte... | 06/11/2002 |
| 6378778 | Snow gun A snow gun (40) having outlet (43), for cold compressed air (42) and outlet (44) for water (49) discharged under pressure. The snow gun (40) has a tubular housing (41), and said outlet for water consists of nozzles (44) disposed along a ring-shaped cross-... | 04/30/2002 |
| 6182905 | Apparatus and method for making snow A snow making tower is illustrated wherein an elongated tower conduit combination is provided which includes an elongated air conduit extending within the water conduit and air and first water discharge nozzles are respectively provided adjacent the upper... | 02/06/2001 |
| 6182906 | Lightweight snow making tower A lightweight snow making tower having a substantially vertical support pole anchored in the ground and an aluminum support pipe coaxially received on the pole for axial rotation thereon. An elongated aluminum support arm C-channel having spaced upturned ... | 02/06/2001 |
| 6168089 | Snow making tower with antifreeze precooling system A snow making tower with a water and air precooling system. An elongated aluminum pipe snow making tower is supported above ground in an upright manner and is provided with snow making nozzles at its upper end for ejecting air and water under pressure int... | 01/02/2001 |
| 6164556 | Portable snow making system for home use A portable snow making system for home use which is mounted on a hand towable vehicle for easy portability. An elongated telescoping support pole is detachably supported from the base of the vehicle and a snow making gun is mounted on the upper end of thi... | 12/26/2000 |
| 6161769 | Adjustable snow making tower Method and apparatus for making snow by generating water spray from a triple array of multiple nozzle sub-boom branch-pipes transversely protruding from the upper end of a main boom of a pivotably adjustable snow making pipe tower. Three air jet streams, ... | 12/19/2000 |
| 6152380 | Snow making tower A snow making tower which includes an elongated tower conduit combination having an elongated air conduit extending within an elongated first water conduit. Air and first water discharge nozzles are respectively provided adjacent the upper end of these co... | 11/28/2000 |
| 6129290 | Snow maker A snowmaker is comprised of a head which has an outer ring of nozzles which form a flow of primary water into droplets which move downstream preferably along paths running at a slight radially outward angle, together with a central nucleator which dischar... | 10/10/2000 |
| 6119956 | Snow gun for making artificial snow In a snow gun, each of air and water are discharged through V-jet nozzles in the form of generally flat and V-shaped jets or sprays. The nozzles are spacially positioned and angled so that the air jet intersects the water spray along a line of intersectio... | 09/19/2000 |
