Patents by Inventor Davorin Kapich
Davorin Kapich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130263619Abstract: An air conditioning system in which a high-pressure refrigerant vapor turbine is driving a low-pressure high-speed centrifugal compressor both supported on liquid refrigerant hydrostatic journal bearings. Due to required turbine miniaturization, the turbine blades surface finish and blade accuracy are of critical importance in order to produce high turbine adiabatic efficiency.Type: ApplicationFiled: April 9, 2012Publication date: October 10, 2013Inventor: Davorin Kapich
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Patent number: 8453999Abstract: A high-velocity water misting gun with a very high-speed radial inflow hydraulic turbine mounted on the same shaft with an axial flow air compressor wheel compressing air discharged at high velocities through an exhaust air nozzle. All of the water discharging from the hydraulic turbine wheel is channeled directly into a water misting nozzle providing a fine water mist discharging into a high-velocity air flow provided by the axial-flow compressor. Preferred embodiments utilize a manually operated ball valve to control water pressure supplied to the gun. A second valve is a manually operated turbine water bypass valve that is integral part of the preferred embodiment which allows for change of turbine power and air flow independently of water flow. With turbine water bypass valve open, most of the turbine flow is bypassed around the turbine and directly into the water misting nozzle, increasing the water flow and decreasing the air flow and air velocity.Type: GrantFiled: July 28, 2010Date of Patent: June 4, 2013Inventor: Davorin Kapich
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Publication number: 20120180482Abstract: A hybrid hydraulic turbocharger system for internal combustion engines. The turbocharger system includes a hydraulic pump motor in mechanical communication with said engine drive shaft. A hybrid turbocharger unit includes an engine exhaust gas turbine driving a compressor, a hydraulic turbine and a hydraulic pump, all mounted on said turbocharger shaft. The hydraulic pump motor functions as a hydraulic pump driven by the drive shaft of the engine to provide additional boost to the turbocharger unit at low engine speeds and functions as a hydraulic motor driven by the turbocharger pump to provide additional torque to the engine drive shaft high engine speeds.Type: ApplicationFiled: January 19, 2011Publication date: July 19, 2012Inventor: Davorin Kapich
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Publication number: 20120180481Abstract: A hybrid hydraulic turbocharger system for internal combustion engines. The turbocharger system includes a hydraulic pump motor in mechanical communication with said engine drive shaft. A hybrid turbocharger unit includes an engine exhaust gas turbine driving a compressor, a hydraulic turbine and a hydraulic pump, all mounted on said turbocharger shaft. The hydraulic pump motor functions as a hydraulic pump driven by the drive shaft of the engine to provide additional boost to the turbocharger unit at low engine speeds and functions as a hydraulic motor driven by the turbocharger pump to provide additional torque to the engine drive shaft high engine speeds. Additionally, this system provides for brake energy recovery by storing the energy absorbed during the breaking cycle and releasing it back to the pump motor when required during the subsequent acceleration cycle.Type: ApplicationFiled: January 19, 2012Publication date: July 19, 2012Inventor: Davorin Kapich
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Publication number: 20120180480Abstract: A hybrid hydraulic turbocharger system for internal combustion engines. The turbocharger system includes a hydraulic pump motor in mechanical communication with said engine drive shaft. A hybrid turbocharger unit includes an engine exhaust gas turbine driving a compressor, a hydraulic turbine and a hydraulic pump, all mounted on said turbocharger shaft. The hydraulic pump motor functions as a hydraulic pump driven by the drive shaft of the engine to provide additional boost to the turbocharger unit at low engine speeds and functions as a hydraulic motor driven by the turbocharger pump to provide additional torque to the engine drive shaft high engine speeds. Additionally, this system provides for brake energy recovery by storing the energy absorbed during the breaking cycle and releasing it back to the pump motor when required during the subsequent acceleration cycle.Type: ApplicationFiled: January 18, 2012Publication date: July 19, 2012Inventor: Davorin Kapich
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Publication number: 20110266702Abstract: A high-velocity water misting gun with a very high-speed radial inflow hydraulic turbine mounted on the same shaft with an axial flow air compressor wheel compressing air discharged at high velocities through an exhaust air nozzle. All of the water discharging from the hydraulic turbine wheel is channeled directly into a water misting nozzle providing a fine water mist discharging into a high-velocity air flow provided by the axial-flow compressor. Preferred embodiments utilize a manually operated ball valve to control water pressure supplied to the gun. A second valve is a manually operated turbine water bypass valve that is integral part of the preferred embodiment which allows for change of turbine power and air flow independently of water flow. With turbine water bypass valve open, most of the turbine flow is bypassed around the turbine and directly into the water misting nozzle, increasing the water flow and decreasing the air flow and air velocity.Type: ApplicationFiled: July 28, 2010Publication date: November 3, 2011Inventor: Davorin Kapich
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Publication number: 20090173071Abstract: A diesel engine with an exhaust gas recirculation system. The diesel engine is equipped with a turbocharger, driven by exhaust gas from the engine combustion chamber, providing an intake air flow and an inter-cooler for cooling the intake air compressed by the turbocharger. The exhaust gas recirculation system includes an exhaust gas diverter for diverting a portion of the exhaust gas for recirculation back into the combustion chamber. The diverted exhaust gas is cooled and then forced, with a hydraulic turbine driven blower, into the flow of compressed intake air exiting the inter-cooler. The mixture of compressed intake air and the re-circulated exhaust gas is then directed into the intake manifold of the engine then into the engine combustion chamber. The hydraulic turbine driven blower is driven with high-pressure hydraulic fluid provided by a hydraulic pump driven by the engine drive shaft.Type: ApplicationFiled: January 7, 2008Publication date: July 9, 2009Inventor: Davorin Kapich
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Patent number: 7530553Abstract: A high-velocity water misting gun with a very high-speed radial inflow hydraulic turbine mounted on the same shaft with an axial flow air compressor wheel compressing air discharged at high velocities through an exhaust air nozzle. A preferred embodiment utilizes a plastic-metal hydraulic turbine wheel in which the plastic portion of the wheel other than blades is solidly anchored within a metal containing wheel. High pressure water drives the hydraulic turbine and provides water lubrication to high-speed bearings supporting a rotating shaft. The preferred embodiment utilizes hybrid bearings (part hydrodynamic, part hydrostatic) suitable for low-viscosity fluids such as water. In the preferred embodiment all of the water discharging from the hydraulic turbine wheel is channeled through a hollow shaft to a set of high-speed, shaft-mounted rotating orifices providing a fine water mist discharging into a high-velocity air flow provided by the axial-flow compressor.Type: GrantFiled: May 8, 2006Date of Patent: May 12, 2009Inventor: Davorin Kapich
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Publication number: 20060273194Abstract: A high-velocity water misting gun with a very high-speed radial inflow hydraulic turbine mounted on the same shaft with an axial flow air compressor wheel compressing air discharged at high velocities through an exhaust air nozzle. A preferred embodiment utilizes a plastic-metal hydraulic turbine wheel in which the plastic portion of the wheel other than blades is solidly anchored within a metal containing wheel. High pressure water drives the hydraulic turbine and provides water lubrication to high-speed bearings supporting a rotating shaft. The preferred embodiment utilizes hybrid bearings (part hydrodynamic, part hydrostatic) suitable for low-viscosity fluids such as water. In the preferred embodiment all of the water discharging from the hydraulic turbine wheel is channeled through a hollow shaft to a set of high-speed, shaft-mounted rotating orifices providing a fine water mist discharging into a high-velocity air flow provided by the axial-flow compressor.Type: ApplicationFiled: May 8, 2006Publication date: December 7, 2006Inventor: Davorin Kapich
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Publication number: 20060254274Abstract: A very high efficiency, high speed radial inflow hydraulic turbine driven axial flow supercharger compressor for discharging compressed air directly into the inlet of a standard turbocharger supplying a very high pressure ratio compressed air to an internal combustion engine. A hydraulic fluid pump driven by the engine provides high pressure hydraulic fluid to drive the hydraulic turbine. All embodiments include features to prevent foaming of hydraulic fluid at the intake of the hydraulic fluid pump. A preferred embodiment includes a single-stage supercharger configuration combined with standard turbocharger that can produce a combined total pressure ratio up to 4.75. The supercharger in a two-stage configuration, combined with a standard turbocharger can produce total pressure ratio up to 5.5. Choice of using a single-stage or a two-stage supercharger compressor would depend on boost requirement of the particular engine.Type: ApplicationFiled: May 8, 2006Publication date: November 16, 2006Inventor: Davorin Kapich
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Patent number: 5471834Abstract: An engine driven propulsion fan. The preferred use of this fan is to power aircraft. Two turbochargers are provided both driven in series by exhaust gasses from a rotary engine. A portion of the compressed air produced by the second turbocharger provides thrust for the engine and a portion is used for engine air, further compressed by the first turbocharger.Type: GrantFiled: February 14, 1994Date of Patent: December 5, 1995Inventor: Davorin Kapich
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Patent number: 5427508Abstract: An electro-pneumatic blower having an electric motor drive and a set of centrifugal blower blade and a set of compressed air turbine blades, both sets being an integral part of a single blower turbine wheel which is mounted on the shaft of the motor. A preferred embodiment is a 30 pound portable unit which which has been tested at flows of 250 CFM at 6.6 inches water gage pressure rise when driven by a 0.5 HP, 3600 RPM electric motor. The blower provides flows of 375 CFM at 13 inches water gage pressure when driven by a compressed air turbine at 80 psig. The compressed air turbine blades in this embodiment are cast along with the blower blades as parts of a single blower-turbine wheel.Type: GrantFiled: June 7, 1993Date of Patent: June 27, 1995Inventor: Davorin Kapich
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Patent number: 5421310Abstract: A hydraulic system for driving a small, compact, relatively low cost, long life and very high speed hydraulic turbine drive. The system maximizes energy conversion efficiency between a combustion engine hydraulic pump and a high speed hydraulic turbine driven supercharger. A venturi system provides a pressure drop permitting lubrication flow for the supercharger bearings and also a substantial hydraulic pump inlet pressure to prevent foaming and cavitation at the pump inlet. A bypass valve permits control of the turbine speed based on engine need rather than engine speed as is the case with prior systems. Embodiments applicable to one stage supercharger and supercharger-turbocharger combinations are described. In a preferred embodiment of the present invention the hydraulic system is used to drive a high speed turbine at a power level in the range of 5 to 20 horsepower with operating speeds of 50,000 to 200,000 RPM.Type: GrantFiled: March 17, 1994Date of Patent: June 6, 1995Inventor: Davorin Kapich
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Patent number: 5346364Abstract: A small, compact, relatively low cost, long life and very high speed hydraulic turbine drive. Typical power of this turbine is in the range of 5 to 20 horsepower with operating speeds of 50,000 to 200,000 RPM. The turbine blades are produced at low cost as a part of a thermoplastic turbine wheel and the strength needed for very high centrifugal forces is provided by compressing substantially all of the plastic turbine wheel, except for the blades, within a metal sleeve. A preferred embodiment is driven by a hydraulic pump geared mechanically to a motor vehicle engine and drives a compressor for supercharging the engine.Type: GrantFiled: August 10, 1993Date of Patent: September 13, 1994Inventor: Davorin Kapich
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Patent number: 5236305Abstract: A high speed hydraulic turbine drive. A nozzle body contains a number of nozzles through which hydraulic fluid is discharged to impinge on the blades of a turbine wheel which is fully submerged in the hydraulic fluid. The nozzles are cylindrical or part conical and part cylindrical and the center line of the nozzles for an angle of about 10 to 30 degrees with the outlet surface of the nozzle body. A manufacturing method is provided which permits the manufacture of drives of various power using the same standard machined parts. In preferred embodiments the turbine drive drives high speed and low speed electric generators, a grinder and a garbage disposal unit.Type: GrantFiled: May 26, 1992Date of Patent: August 17, 1993Inventor: Davorin Kapich
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Patent number: 5199848Abstract: A compact water turbine driven water pump comprising an impeller driven by an axial flow water turbine wheel both operating on a single shaft and contained in a housing. A nozzle body also contained in the housing comprises a plurality of nozzles through which water is discharged to imping on the blades of the turbine wheel which is full submerged in water. The nozzles are cylindrical or part conical and part cyndrical and the centerline of the nozzles form an angle of about 10 to 30 degrees with the outlet surface of the nozzle body. A manufacturing method is provided which permits the manufacture of pumps of various power using the same standard machined parts.Type: GrantFiled: May 26, 1992Date of Patent: April 6, 1993Inventor: Davorin Kapich
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Patent number: 5125797Abstract: A portable water driven high velocity fan. Contained in a cylindrical housing is a turbine body in which a plurality of cylindrical or part cylindrical and part conical nozzles are provided. The nozzles make an angle of about 10 to 30 degrees with the nozzle outlet surface of the nozzle body. A special air expansion nozzle is provided to permit the fan to generate greatly increased air flow rates, spray a water mist, spray fire fighting foam or spray other similar materials.Type: GrantFiled: September 14, 1990Date of Patent: June 30, 1992Inventor: Davorin Kapich
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Patent number: 5013214Abstract: An portable water driven high velocity fan. Contained in a cylindrical housing is a turbine nozzle body in which a plurality of cylindrical or part cylindrical and part conical nozzles are provided. The nozzles make an angle of about 10 to 30 degrees with the nozzle outlet surface of the nozzle body. A method of manufacture is provided which permits the manufacture of fans having various power ratings using the same standard machined parts.Type: GrantFiled: February 6, 1989Date of Patent: May 7, 1991Inventor: Davorin Kapich
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Patent number: 4874288Abstract: An inlet guide vane assembly for a pump or a compressor having rotary blades. The guide vanes pivot in a controlled manner so that a portion of the vanes can be inserted into or withdrawn from the inlet passageway of the pump or the compressor by pivoting the guide vanes about a pivot axis.Type: GrantFiled: May 3, 1988Date of Patent: October 17, 1989Inventor: D. Davorin Kapich