Class / Patent application number | Description | Number of patent applications / Date published |
060221000 | Motive fluid principally liquid | 9 |
20090000269 | Water rocket engine with a two-phase nozzle - The water rocket engine with a two-phase nozzle includes a water rocket propulsion system having a reservoir, and a nozzle assembly disposed along a central longitudinal axis therein, the nozzle assembly comprising an inverted cup shaped fluid capture vessel having a substantially concave sidewall and extending away from an elongated tube. Open lower portion of the fluid capture vessel forms a fluid inlet. The elongated tube has a concave shaped side wall that forms a nozzle gas inlet at an upper portion of the tube, a nozzle outlet at a lower portion of the tube, and a passageway disposed between the tube upper portion and the tube lower portion. Within the confines of the capture vessel, fluid injection holes are disposed in the tube sidewall to provide fluid intake into the nozzle passageway where fluid and gas combine to form a two phase propellant. | 01-01-2009 |
20100162681 | Device for the efficient conversion of compressed gas energy to mechanical energy or thrust - A mechanical device efficiently converts energy stored in a highly compressed gas, such as air in a pipeline or SCUBA tank, to mechanical energy, such as might be used to drive an electrical generator or to propel a water craft. | 07-01-2010 |
20110113750 | NAUTICAL ENGINE FOR BOATS WITH JET PROPULSION BY COMBUSTION GASES - There is described a nautical engine comprising at least one combustion chamber ( | 05-19-2011 |
20140020360 | POWER GENERATION SYSTEM UTILIZING CIRCULATORY WATER FLOW IN TAPER CONDUIT - A power generator system utilizing the jet power of circulatory water flow in taper conduits is provided. The system comprises four jet components ( | 01-23-2014 |
20140096505 | JET PROPULSION BOAT - A deflector control portion in a jet propulsion boat causes a deflector to swing by controlling a deflector drive mechanism in response to an operation of a shift operating portion. The deflector control portion causes the deflector to move to a first trim position when the shift operating portion is switched to a forward movement shift position. The deflector control portion causes the deflector to move to a second trim position when the shift operating portion is switched to an operating shift position. | 04-10-2014 |
20140096506 | JET PROPULSION BOAT - A jet propulsion boat includes a boat body, an engine, a jet propulsion mechanism, and a reverse gate. The reverse gate is arranged rearward of the jet propulsion mechanism and is configured to move to a forward movement position that allows a jet flow from the jet propulsion mechanism to flow backward, a reverse movement position that allows the jet flow from the jet propulsion mechanism to flow forward and downward, and a neutral position that allows the jet flow from the jet propulsion mechanism to flow in the lateral direction. The reverse gate includes a first member and a second member. The first member includes a downward opening and a pair of lateral openings open to the right and left when the reverse gate is positioned in the neutral position. The second member covers at least a portion of the downward opening when the reverse gate is positioned in the neutral position. | 04-10-2014 |
20140102075 | JET PROPELLED WATERCRAFT - A jet propelled watercraft includes a jet pump that jets water rearward from a jet port, a reverse gate, a reverse gate moving mechanism, and a withdrawal controller. The reverse gate is movable in an up/down direction between a reverse drive position at which an entirety of the jet port is covered and a forward drive position at which the entirety of the jet port is open. In a state of being positioned at the reverse drive position, the reverse gate guides forward the water that has been guided to the jet port. The reverse gate moving mechanism includes an electric motor that generates power to move the reverse gate between the reverse drive position and the forward drive position, and a transmitting mechanism that connects the electric motor and the reverse gate. The withdrawal controller monitors malfunctions of the reverse gate moving mechanism. | 04-17-2014 |
20150337763 | A PROPELLANT FEED CIRCUIT AND A COOLING METHOD - The invention relates to the aerospace field, and in particular to the field of vehicles propelled by rocket engines. In particular, the invention relates to a feed circuit ( | 11-26-2015 |
060222000 | Plural discharge outlets | 1 |
20100043392 | MIXTURE RATIO STABILIZER FOR LIQUID PROPELLANT ROCKET ENGINE - There is provided a mixture ratio stabilizer for a liquid propellant rocket engine which comprises: a body internally having a chamber and a fuel supply hole communicating with an end of the chamber to receive fuel from a fuel supply pump, an oxidizer inlet, and a fuel outlet; a spool guide in the chamber and including a plurality of first orifices for the fuel outlet and the fuel supply hole to communicate with each other; a bellows in the chamber and having one end adjacent to the spool guide and the other end positioned adjacent to the oxidizer inlet, to expand and contract in accordance with the pressure of an oxidizer which flows into the oxidizer inlet; and a spool having a part placed in the spool guide. | 02-25-2010 |