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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Application No. | Application Title | Issue Date |
| 20110207375 | VARIABLE DIMENSION WATER JET A quiescently flush resilient portion of a water jet exit channel that distends under controlled fluidic pressure to narrow the flow channel to trade off power for speed in a water-jet-powered watercraft and/or to suppress impeller cavitations during standing starts. Th... | 08/25/2011 |
| 20090130925 | Marine propulsor with inlet fluid inducer Presented is a fluid propulsor for propelling a vehicle that incorporates a Coanda Effect Inducer (CEI), more commonly called an inlet fluid inducer in this application, in its inlet to induce fluids passing by the vehicle to turn uniformly toward a powered fluid energi... | 05/21/2009 |
| 20090098782 | Two Phase Water Jet Propulsion for High-Speed Vehicles A water jet propulsion apparatus having an engine producing an exhaust gas, a pump driven by the engine, a nozzle in fluid communication with the pump, and an exhaust passageway communicating between the engine and the nozzle is disclosed. The exhaust passageway is conn... | 04/16/2009 |
| 20090088034 | WATER INTAKE GRILL FOR PERSONAL WATERCRAFT A water intake grill for attachment to a water intake port of a jet watercraft. The water intake grill comprising a plurality of elongate members situated in between and mounted to fore and aft mounts. The fore mount comprising a base having an angularly orientated bott... | 04/02/2009 |
| 20080214066 | Jet pump tail cone insert The present disclosure relates to a jet pump tail cone insert for a jet pump. The jet pump tail cone insert comprises a cap, a body and an end member. The end member has a plurality of projections configured to matingly receive a plurality of forks of the body. When con... | 09/04/2008 |
| 20070249243 | VARIABLE AREA PUMP DISCHARGE SYSTEM A highly efficient watercraft propulsion system that operates continually submerged and relies on a non-circular variable area pump discharge opening which is configured, positioned and oriented so as to maximize the hydraulic reaction between the high velocity water je... | 10/25/2007 |
| 20070232158 | Ship Driven by Inboard Engines and Water Jets A ship is disclosed which is driven by inboard engines with propellers and by water jets producing jets of water. The inboard engines are embodied in the form of electric motors and the water jets are used underneath the bottom of the ship. The electric inboard engines ... | 10/04/2007 |
| 20070218783 | Lifting body water jet propulsion inlet inductor A foil shaped lifting body is attached by means of a strut to the underwater body of a vessel in such a manner as to cause a standing wave to be developed when the vessel is in operation in order that the standing wave will induct water into machinery intakes. The techn... | 09/20/2007 |
| 20060223389 | Jet pump tail cone insert The present disclosure relates to a jet pump tail cone insert for a jet pump. The jet pump tail cone insert comprises a cap, a body and an end member. The end member has a plurality of projections configured to matingly receive a plurality of forks of the body. When con... | 10/05/2006 |
| 20060105646 | Drive apparatus A drive apparatus (10) for propelling a vehicle across a body of water is described. The apparatus (10) comprises a prime mover, for example a gas turbine engine (12), and a propelling arrangement (26) driven by the prime mover for propelling... | 05/18/2006 |
| 20060014445 | Outboard jet drive marine propulsion system and control lever therefor A jet pump for an outboard propulsion marine engine includes a support member and at least one impeller blade extending helically from said support member At least one induction blade extends helically from said support member. A stator having a volume reduction member ... | 01/19/2006 |
| 20060009095 | Jet propulsion boat To provide a jet propulsion boat that enables preventing the occurrence of cavitation. In a jet propulsion boat that jets water pressurized and accelerated by a water jet pump from a rear jet nozzle and is propelled by its reaction, a turbocharger is provided to an engi... | 01/12/2006 |
| 20050215129 | Propulsion system for a fast seagoing ship, especially a naval ship The invention relates to a propulsion system for a fast seagoing ship, especially a naval ship, which comprises a propulsion system driven by at least one water jet produced by a pump assembly with an outlet nozzle for water, and a propeller jet produced by at least one... | 09/29/2005 |
| 20050070178 | Waterjet propulsion apparatus A waterjet propulsion apparatus having a five blade rotor and an eight blade stator that are located within housing sections that define a water flowpath. The housing and hub are designed such that in operation a nonuniform loading arises on the rotor blades whereby gre... | 03/31/2005 |
