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公开(公告)号：US20220403842A1
公开(公告)日：2022-12-22
申请号：US17777147
申请日：2020-11-27
申请人： Danhydra A/S
发明人： Thomas Hove
摘要： A device for pumping a viscous fluid includes two positive displacement rotary pumps, a first pump (1) and a second pump (2), wherein each pump has an inlet (3, 4) for fluid at a suction side and an outlet (5, 6) for fluid on a discharge side, wherein the inlet (3) of the first pump (1) is connected to a reservoir of the viscous fluid by a connection (14) pipe or hose, wherein the apparatus further includes an intermediate part or connection (7) having an inlet (8), a first outlet (9) and a flow path (10) for fluid, wherein the outlet (5) of the first pump is connected to the inlet (8) of the intermediate part and the outlet (9) of the intermediate part is connected to the inlet (4) of the second pump, such that during the pumping the viscous fluid is forced from the reservoir through the first pump (1), through the intermediate part (7) and through the second pump (2) to the outlet (6) of the second pump.
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公开(公告)号：US20220266948A1
公开(公告)日：2022-08-25
申请号：US17740155
申请日：2022-05-09
申请人： Dong Won LEE , Youngtack SHIM
发明人： Dong Won LEE
IPC分类号： B62M19/00 , F04B17/03 , F04C2/344 , F04C2/324 , F04C2/08 , F04B23/04 , F04C14/26 , F03C1/26 , F16H61/42 , F04C14/04 , F04C14/22 , B62K19/30 , B62M6/40 , B62M25/08 , F16H39/02 , F16H61/435 , F16H61/46
摘要： This disclosure generally relates to an automatic bicycle, particularly to a hydraulic automatic transmission bicycle which can automatically and adaptively change gear ratios. More particularly, this disclosure relates to those hydraulic automatic transmission bicycles which use fluid pressure to change such gear ratios, and which include various hydraulic automatic transmissions which may be provided in various configurations and may operate in various methods and sequences to provide automatic and infinitely variable gear ratios.
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公开(公告)号：US11248604B2
公开(公告)日：2022-02-15
申请号：US16500699
申请日：2017-06-06
发明人： Wataru Iwatake , Shin Sekiya , Raito Kawamura , Kei Sasaki
摘要： In a scroll compressor, a first flow passage is formed in a fixed base plate and a frame to supply oil separated by an oil separating mechanism provided in a sealed container to an oil sump at the bottom of the sealed container. In the fixed base plate, a second flow passage is formed to supply the oil separated by the oil separating mechanism into a compression mechanism.
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公开(公告)号：US11248602B2
公开(公告)日：2022-02-15
申请号：US16955492
申请日：2018-12-13
发明人： Reinhard Pippes
摘要： A fluid delivery device having a forepump and a main pump fluidically connected to the forepump, wherein the forepump can be driven via a forepump input shaft and the main pump can be driven via a main pump input shaft. According to the invention, the forepump has a forepump drive gear coupled to the forepump input shaft and a forepump delivery gear interacting with the forepump drive gear to deliver the fluid, wherein the forepump and the main pump are drivingly coupled to a common drive shaft, and wherein the forepump delivery gear and the main pump input shaft are connected to one another via a connecting shaft such that the forepump input shaft is coupled directly to the drive shaft and the main pump input shaft is coupled to the drive shaft via the connecting shaft.
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公开(公告)号：US11236744B2
公开(公告)日：2022-02-01
申请号：US15635577
申请日：2017-06-28
申请人： FLUID-O-TECH S.R.L.
IPC分类号： F04B49/24 , F16K17/04 , F16K31/00 , F16K17/38 , F04C28/26 , F04C28/28 , G05D7/01 , F04C14/26 , F04C14/28 , F04C28/24 , F04C14/24
摘要： A hydraulic pump is described, comprising at least one inlet duct for a fluid, at least one outlet duct for the fluid and at least one pumping unit interposed between the inlet and outlet ducts. At least one multifunction valve is interposed between the inlet duct, upstream of the pumping unit, and the outlet duct, downstream of the pumping unit, which valve is configured to divert the flow of fluid from the inlet duct to the outlet duct without the fluid flowing into the pumping unit. The multifunction valve comprises a valve body that defines an inner bypass channel in which a shutter element is axially movable, an actuator member operatively associated with the shutter element and configured to move it from a closing position to an opening position of the bypass channel, and an elastic contrast element operatively associated with the shutter element and configured to keep it in the first closing position of the bypass channel when such shutter element is not actuated by the actuator member. The actuator member consists of a bias spring manufactured with a shape memory alloy, configured to move the shutter element from the first closing position to the second opening position of the bypass channel when a predefined temperature value is reached.
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公开(公告)号：US10731735B1
公开(公告)日：2020-08-04
申请号：US15924776
申请日：2018-03-19
发明人： Jerald G. Wagner
IPC分类号： F16H3/72 , F04C2/10 , F04C14/06 , F04C14/26 , F16H48/06 , F04C13/00 , F16H48/27 , F16H48/40 , F16D43/284
摘要： A device is described for transmitting mechanical power that allows variable output-speed to input-speed ratios. Gear sets such as epicyclic gear sets have components that rotate about a common axis selectively at the same rotational speed and at different relative rotational speeds as determined by at least one of fluid flow and fluid pressure. One or more inlet ports and fluid passageways introduce a working fluid into one or more volume spaces between the components. The internal pressure and flow of the working fluid through the device is controlled to provide substantially infinite variability of the output-speed to input-speed ratios for applications where, for example, an engine provides the mechanical power for propelling a vehicle.
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公开(公告)号：US10590930B2
公开(公告)日：2020-03-17
申请号：US15527088
申请日：2015-11-19
申请人： ITT Bornemann GmbH
摘要： The application relates to a system for conveying a medium having not less than two working machines (2, 2a, 2b, 2c) that each have not less than one carrier shaft (25, 35) with transport elements (22, 32) for the medium to be conveyed arranged on them, and not less than one drive (3, 3a, 3b, 3c) that sets the respective carrier shaft (25, 35) in rotation, with multiple working machines (2, 2a, 2b, 2c) connected in series, so that the medium is conveyed to a working machine (2, 2a, 2b, 2c) arranged downstream, and so that a separate drive (3, 3a, 3b, 3c) is assigned to each of the working machines (2, 2a, 2b, 2c) and that the drives (3, 3a, 3b, 3c) are connected in parallel with each other and connected to a common power supply system (5).
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公开(公告)号：USRE47590E1
公开(公告)日：2019-09-03
申请号：US14252409
申请日：2014-04-14
IPC分类号： B23P19/04 , F04C14/26 , B67D1/10 , A61M5/142 , F04C15/00 , F04C13/00 , F04C5/00 , F04C2/356 , F04C11/00 , F04C2/22
摘要： A pump is formed by a housing (10) having an inlet (11) for connection to a source of fluid and an outlet (12) for pumped fluid. A rotor (15) is rotatable within the housing and the inlet (11) and the outlet (12) are spaced apart around the path of the rotor (15) in the housing. The rotor (15) has surfaces (16a, 16b, 16c, 16d) that form, with the housing (10), closed chambers (18a, 18b, 18c, 18d) which travel around the housing (10) to convey fluid from the inlet (11) to the outlet (12). The housing (10) carries a seal (14) that is located between the inlet (11) and the outlet (12) in the direction of travel of the rotor (15). The seal (14) co-operates with the rotor surfaces (16a, 16b, 16c, 16d) as the surfaces (16a, 16b, 16c, 16d) pass between the outlet (12) and the inlet (11) to prevent the formation of a chamber during said passage and so prevent fluid flow from the outlet (12) to the inlet (11). Such a pump is easily and cheaply produced and is particularly useful in medical applications.
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公开(公告)号：US10337512B2
公开(公告)日：2019-07-02
申请号：US15502584
申请日：2015-08-25
申请人： Carrier Corporation
IPC分类号： F03C4/00 , F04C18/00 , F04C2/00 , F04C14/26 , F04C2/10 , F04C2/08 , F04C13/00 , F04C15/00 , F04B53/18
摘要： An internal gear pump (100) comprises: a rotor/torque ring comprising an internally lobed (140) rotor (130) and a torque ring (120) extending beyond at least a first end (134) of the rotor; an externally lobed (160) idler (150) encircled by the rotor; a hollow shaft (190) supporting the idler; a pressure relief element (200) positioned to shift between a first condition and a second condition; and a spring (210) biasing the pressure relief element toward the first condition from the second condition. The torque ring has at least one pressure relief port (240A, 240B) positioned so that: in the first condition, the pressure relief element blocks a path from an interior volume (235) of the pump to the pressure relief port; and in the second condition, relative to the first condition the pressure relief element does not block the path.
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公开(公告)号：US10174759B2
公开(公告)日：2019-01-08
申请号：US15259056
申请日：2016-09-08
发明人： Jin Yong Kim
摘要： Provided is a dual pump system including: a dual pump provided with a plurality of chambers independent from each other, wherein an input and an output port are provided in each of the chambers; a plurality of output lines connected to the output ports of the plurality of chambers, respectively; and a switching valve that is provided in an output line of one side of the plurality of output lines, enables a fluid to flow to the output line when operating in one direction, and enables the fluid to be drained to an oil pan through a bypass line branched from the output line when operating in the other direction.
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