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公开(公告)号：US20240286723A1
公开(公告)日：2024-08-29
申请号：US18336563
申请日：2023-06-16
摘要： A propeller including a propeller hub, two or more blades connected with the propeller hub, and an insert having a tubular shape with an inner and outer face. The insert having a raised ridge on the inner face and the insert being inserted in at least a portion of the propeller hub.
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公开(公告)号：US12064933B2
公开(公告)日：2024-08-20
申请号：US17640948
申请日：2020-09-11
发明人： Mikel Atutxa Briones , Pedro Jato Losfablos , Jorge Lana Galdeano , Leyre Redin Larrea , Nicolas Rojo Saiz
CPC分类号： B29D99/0028 , F03D1/0675 , B29C70/30 , B29L2031/085 , F05B2280/6003
摘要： Provided is a turbine blade, including shells and webs connected to the shells, with, with each web being supported by reinforcement structures, whereby a first reinforcement structures includes at least one stack composed of several pultruded composite strips including carbon fibers with the strips being fixed in a resin matrix, and a second reinforcement structures supporting a second web either include at least one stack composed of glass and/or carbon fiber layers infused with resin, the stack being disposed between an outer and an inner layer of upper and lower shell, or at least one stack composed of glass and/or carbon fiber layers infused with resin or of several pultruded composite strips including carbon fibers with the strips being fixed in a resin matrix, which stack is an integral part of the second web and builds the flange.
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公开(公告)号：US12012192B1
公开(公告)日：2024-06-18
申请号：US18198377
申请日：2023-05-17
申请人： Charles S. Powers
发明人： Charles S. Powers
摘要： Apertured propeller assemblies may include at least one propeller. The at least one propeller may include a propeller hub having a propeller hub wall. A propeller hub bore may be formed by the propeller hub wall. A plurality of propeller blades may extend from the propeller hub wall. At least one propeller service aperture may extend radially through the propeller hub wall in communication with the propeller hub bore. The at least one propeller service aperture may facilitate dual prop configurations, exhaust flare ring attachments and/or other modifications to the at least one propeller. Other propeller assemblies and apertured propeller methods are also disclosed.
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4.发明公开公开(公告)号：US20240150008A1
公开(公告)日：2024-05-09
申请号：US18497848
申请日：2023-10-30
摘要： A reduced noise curved surface, including the elements of a curved substrate and a plurality of micropillars operationally connected to the curved substrate and defining a coating, wherein the respective micropillars are positioned to define an aperiodic sequence based on the golden ratio, and wherein the plurality of aperiodically sequenced micropillars increase sound absorption and drag reduction of the curved surface.
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公开(公告)号：US11965522B2
公开(公告)日：2024-04-23
申请号：US17586786
申请日：2022-01-28
发明人： Pei-Han Chiu , Chien-Ming Lee , Chung-Yuan Tsang , Chao-Fu Yang
CPC分类号： F04D29/34 , F04D29/384 , F04D29/66
摘要： An impeller includes a hub and a plurality of blades. The blades are arranged around the hub, and each blade includes a leading edge, a blade tip, a root portion, a trailing edge, a windward side and a leeward side. The windward side including a first turning point and a second turning point, a first vertical height difference is formed from the blade tip to the first turning point, and a second vertical height difference is formed from the first turning point to the second turning point, and the first vertical height difference is greater than the second vertical height difference. The impeller apparently reduces the noise.
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公开(公告)号：US11945562B1
公开(公告)日：2024-04-02
申请号：US18470534
申请日：2023-09-20
申请人： Cyclazoom, LLC
发明人： Michael Kipnis
摘要： Propeller for an airplane or boat includes a rotatable hub attachable to a power axle, a ring structure including an inner ring spaced apart from and connected to the hub, and shovel blades fixed to the inner ring. Each shovel blade is connected at an inner lateral edge to an outer surface of the inner ring and is angled rearward. The shovel blades are spaced apart from one another such that a leading edge of each shovel blade does not overlie a trailing edge of an immediately adjacent shovel blade and the trailing edge of each shovel blade does not underlie the leading edge of an immediately adjacent shovel blade. There may be an outer ring around the shovel blades, or separated blade guides on an opposite side of the shovel blades from the inner ring with each blade guide being associated with a respective shovel blade.
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公开(公告)号：US20240051646A1
公开(公告)日：2024-02-15
申请号：US18496944
申请日：2023-10-30
申请人： MOTH CO., LTD.
发明人： Jae Hyung LEE , Yeong Ju GO
摘要： Disclosed is a system for reducing blade tip vortex cavitation by controlling mass flow. The system reduces blade tip vortex cavitation that occurs around blades of a propulsive propeller of a ship when the propulsive propeller rotates to generate force required to propel the ship across the sea by forming a plurality of flow holes in the propeller blades and controlling mass flow through the plurality of flow holes, i.e., appropriately discharging water to the outside or suctioning outside water through the plurality of flow holes, thereby reducing underwater noise and vibration of the hull. The system includes a propeller, a water feeding pipe, a water supply/suction unit, and a controller.
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公开(公告)号：US11235846B2
公开(公告)日：2022-02-01
申请号：US16606891
申请日：2018-04-20
摘要： This disclosure relates to a system for reducing cavitation at a surface that moves relatively with respect to a first fluid. The system comprises a degasser configured to at least partially degas a second fluid. The system also comprises a reservoir in communication with the degasser and configured to house the at least partially degassed second fluid, the reservoir having an outlet that is arranged for directing the second fluid towards the surface. The system is configured such that the directing of the at least partially degassed second fluid towards the surface forms a boundary layer at the surface. The boundary layer is adapted to at least partially increase the negative pressure required to initiate cavitation at the surface so as to reduce the occurrence of cavitation during such relative movement.
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公开(公告)号：US10960269B1
公开(公告)日：2021-03-30
申请号：US16673586
申请日：2019-11-04
发明人： Fa-Hsing Lu
摘要： An underwater motive device includes a rear main housing including two opposite handle bar elements on two sides respectively, and longitudinal rear joining projections on an inner surface; a power mechanism in the rear main housing; a propeller driven by a driving shaft of the power mechanism; a bridging housing including a battery compartment, a forward joining member, a shoulder abutted the forward joining member, and a rear joining member; a hollow intermediate housing including two opposite handle bar members on two sides respectively, the handle bar members joined the handle bar elements, longitudinal front joining projections on an inner surface, and an internal annular limit element at a front end; and a front cone including a rear opening and a structure on an inner surface for securing to the forward joining member of the bridging housing.
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公开(公告)号：US20210070410A1
公开(公告)日：2021-03-11
申请号：US16561597
申请日：2019-09-05
申请人： Thomas A. Russell
发明人： Thomas A. Russell
摘要： A propeller. The blades of the propeller are characterized by a blade center axis which corresponds to a generator line of a cone to which the blade, or blade thrust surface, conforms. The propeller hub is fixed to the blade at the root, in line with the blade center axis, such that the hub axis and blade center axis lie in the same plane, and the leading edge of the blade is positioned forward (referring to the upstream direction of movement caused by the propeller) of the trailing edge of the blade.
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