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1. 发明授权

US10969811B1 Stabilized discharge power supply for hall-effect thrusters 有权
公开(公告)号：US10969811B1
公开(公告)日：2021-04-06
申请号：US17131807
申请日：2020-12-23
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： G05F1/00 , G05F1/625 , B64G1/40
摘要： Methods and systems for a discharge power supply for providing a stabilized discharge power to a Hall-effect thruster are provided. A method includes sensing, by a first sensor circuit and based on a discharge power, a voltage sense signal, sensing, by a second sensor circuit and based on the discharge power, a current sense signal, multiplying, by a multiplying circuit, the voltage sense signal and the current sense signal to generate a feedback signal, generating, by a control logic circuit and based on control signals, further control signals, generating, by an impulse generation circuit and based on the further control signals and the feedback signal, control impulses, producing, by a transistor bridge and using the control impulses and a power source, an electrical impulses, and modifying, by an output circuit, the electrical impulses to generate the stabilized discharge power.

2. 发明授权

US11408563B1 Pressure vessel and method of manufacturing thereof 有权
公开(公告)号：US11408563B1
公开(公告)日：2022-08-09
申请号：US17674077
申请日：2022-02-17
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： F17C13/00 , B33Y80/00 , B33Y70/00
摘要： Provided is a pressure vessel. An example pressure vessel includes a spherical portion and a conical portion that extends from the spherical portion and has an opening for pumping in and pumping out a pressurized gaseous substance. The spherical portion and the conical portion are made in a single technological cycle by 3D printing. The thicknesses of the wall of the spherical portion changes from δ 1 = P ⁢ R 1 2 ⁢ [ σ ] to δ 2 = 3 ⁢ P ⁢ R 2 2 ⁢ [ σ ] ⁢ ⁢ cos ⁢ ⁢ α and the thickness of the wall of the conical portion changes linearly from δ2 to δ 3 = 3 ⁢ P ⁢ R 3 2 ⁡ [ σ ] ⁢ ⁢ cos ⁢ ⁢ α , where P is predetermined operating pressure, R1 is a radius of the spherical portion, R2 is a radius of a base of the conical portion, R3 is a radius of the opening of the conical portion, [σ] is an allowable material stress, and a is an angle between a generatrix and a symmetry axis of the conical portion.

3. 发明授权

US11332635B1 Protective heat-resistant coating compositions 有权
公开(公告)号：US11332635B1
公开(公告)日：2022-05-17
申请号：US17554382
申请日：2021-12-17
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： C09D129/04 , B05D7/00 , C08K13/02
摘要： A method for heat-resistant protection of machinery components made of metal alloy is provided. The method includes preparing a surface of the machinery component to remove impurities, applying at least one layer of a coating composition to the surface of the machinery component, and drying the layer prior to applying a next layer of the coating composition to the surface. The coating composition includes a clay deposit, a polyvinyl alcohol solution, a distilled water, and a mixture including, by weight, from 40% to 60% of nickel, from 5% to 7% of chromium, from 12% to 15% of silicon, from 6% to 8% of titanium diboride, from 3% to 13% of barium oxide, from 1% to 10% of boron oxide, and from 4% to 6% by weight of silicon oxide, up to 2% of molybdenum disilicide, up to 5% of zinc oxide, and up to 2% of magnesium oxide.

4. 发明授权

US11414564B1 Protective heat-resistant coating compositions 有权
公开(公告)号：US11414564B1
公开(公告)日：2022-08-16
申请号：US17695946
申请日：2022-03-16
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： C09D129/04 , C08K13/02 , B05D7/00
摘要： A method for heat-resistant protection of machinery components made of metal alloy is provided. The method includes preparing a surface of the machinery component to remove impurities, applying at least one layer of a coating composition to the surface of the machinery component, and drying the layer prior to applying a next layer of the coating composition to the surface. The coating composition includes a clay deposit, a polyvinyl alcohol solution, a distilled water, and a mixture including, by weight, from 40% to 60% of nickel, from 5% to 7% of chromium, from 12% to 15% of silicon, from 6% to 8% of titanium diboride, from 3% to 13% of barium oxide, from 1% to 10% of boron oxide, and from 4% to 6% by weight of silicon oxide, up to 2% of molybdenum disilicide, up to 5% of zinc oxide, and up to 2% of magnesium oxide.

5. 发明授权

US11280325B1 Hall-effect thruster with an accelerating channel acting as a magnetic shield 有权
公开(公告)号：US11280325B1
公开(公告)日：2022-03-22
申请号：US17494945
申请日：2021-10-06
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： F03H1/00
摘要： Methods and systems for electric propulsion are provided. An example method includes providing a magnetic shield using an accelerating channel made of a soft magnetic material; generating, by a magnetic system, a radial magnetic field in the accelerating channel to ionize a working substance, wherein the magnetic system includes a central magnetic pole, an outer annular pole, a magnetic circuit, and coils to carry an electrical current; and generating, using an outer hollow cathode and an anode-gas distributor disposed within the accelerating channel, an electrical discharge along the accelerating channel. The accelerating channel provides the magnetic shield to force the radial magnetic field to have a maximum gradient at a location of the central magnetic pole and at a location of the outer annular pole and to force ions of a working substance to pass isolators of magnetic poles, thereby decreasing erosion of the isolators.

6. 发明授权

US11608907B1 Solenoid valve 有权
公开(公告)号：US11608907B1
公开(公告)日：2023-03-21
申请号：US17891309
申请日：2022-08-19
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： F16K31/06 , F16K11/044 , F16K31/42
摘要： A solenoid valve assembly is provided. The solenoid valve assembly includes a pilot assembly, a body, and a main poppet valve assembly. The pilot assembly includes a frame having an external wall and an internal wall forming an annular cavity. The body includes an inlet cavity, a channel, an outlet cavity, and a main poppet valve seat disposed in the channel between the inlet cavity and the outlet cavity. The main poppet valve assembly includes a main poppet valve and two movable sealing elements. The main poppet valve has a cylindrical shape having an internal diameter, an external diameter, and grooves. The main poppet valve is at least partially disposed in the annular cavity and configured to shut the main poppet valve seat. The movable sealing elements are disposed in the grooves to seal the main poppet valve to the external wall and the internal wall of the frame.

7. 发明授权

US11488799B1 Heaters for hollow cathodes 有权
公开(公告)号：US11488799B1
公开(公告)日：2022-11-01
申请号：US17871511
申请日：2022-07-22
申请人： PIPL LIMITED
发明人： Maxym Polyakov
IPC分类号： H01J1/22 , H01J9/08 , H01J1/02
摘要： A heater for a hollow cathode and a method for manufacturing the heater for the hollow cathode are provided. An example heater includes a tube and a thickening located at an edge of the tube. The tube has a side wall of a predetermined thickness and a cut in the side wall. The thickening is configured for attaching two electrical current leads. The tube and the thickening are made of a carbon fiber composite.

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