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公开(公告)号：US11021237B2
公开(公告)日：2021-06-01
申请号：US16259186
申请日：2019-01-28
发明人： Alessio Tarantino , Peter Keenan
IPC分类号： B64C13/40 , B64C25/22 , F15B13/02 , B64C25/42 , F15B21/047 , B64C13/42 , F15B13/042 , B64C13/00
摘要： A sub-system 200 for an aircraft hydraulic system 20 that includes a first inlet 202 for receiving fluid from a supply 22 of hydraulic fluid, a system valve 210 for controlling fluid flow from the sub-system 200 to a hydraulically-operable system 24 of the aircraft hydraulic system 20, a check valve 220 for permitting fluid flow from the sub-system 200 and preventing or hindering fluid flow into the sub-system 200, a second inlet 240 for receiving fluid from a second supply 28 of hydraulic fluid, and a selector 230. The selector 230 configured to place the system valve 210 in fluid communication with the first inlet 202 when the selector 230 is in a first state, and to place the system valve 210 in fluid communication with the check valve 220 and the second inlet 240 when the selector 230 is in a second state different from the first state.
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公开(公告)号：US10881987B2
公开(公告)日：2021-01-05
申请号：US16440524
申请日：2019-06-13
申请人： Eric Amato
发明人： Eric Amato
摘要： A vortex reservoir for separation of an aerated portion of a hydraulic fluid includes an upper chamber and a lower chamber, in fluid communication with the upper chamber, having a lower chamber sidewall. The lower chamber includes a lower lower chamber and an upper lower chamber. The lower chamber includes a lower chamber partitioning plate. The lower chamber partitioning plate is located between the lower lower chamber and the upper lower chamber. The lower lower chamber is in fluid communication with the upper lower chamber via a gap between the lower chamber partitioning plate and the lower chamber sidewall.
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公开(公告)号：US12117022B2
公开(公告)日：2024-10-15
申请号：US17225599
申请日：2021-04-08
申请人： Caterpillar Inc.
IPC分类号： F15B1/26 , B01D19/00 , E02F9/08 , F15B21/047
CPC分类号： F15B1/26 , B01D19/0042 , E02F9/0883 , F15B21/047
摘要： A diffuser for a return line on a hydraulic tank may include a coupling portion configured for coupling in fluid communication with a return port of the hydraulic tank and for receiving return fluid along an incoming longitudinal direction. The diffuser may also include a dispersion portion in fluid communication with the coupling portion and configured for dispersing the return fluid radially. The diffuser may also include a manifold arranged around the dispersion portion and configured to direct the return fluid circumferentially and axially.
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公开(公告)号：US10801532B2
公开(公告)日：2020-10-13
申请号：US16327928
申请日：2017-03-29
IPC分类号： F15B21/14 , E02F9/22 , E02F9/20 , E02F3/42 , E02F3/43 , F15B11/10 , F15B1/02 , E02F3/32 , F15B21/047 , F15B21/044 , F15B21/08 , F15B1/033
摘要： A work machine including: a hydraulic cylinder 20 configured to drive a work implement 3; a control valve 22 configured to connect a delivery line of a hydraulic pump 21 switchingly to a bottom fluid chamber and a rod fluid chamber of the hydraulic cylinder 20 and a tank; a pilot pump 23 configured to output a pilot pressure to drive the control valve 22; an engine 24 configured to drive the hydraulic pump 21 and the pilot pump 23; and an accumulator 26 configured to accumulate a return hydraulic fluid from the hydraulic cylinder 20 is provided with: a bypass line 41 configured to connect the bottom fluid chamber of the hydraulic cylinder 20 and a delivery line 21a of the hydraulic pump 21 by bypassing the control valve 22 and be provided with the accumulator 26 thereon; a pressure-accumulation control valve 27 provided between the bottom fluid chamber of the hydraulic cylinder 20 and the accumulator 26; a release control valve 28 provided between the accumulator 26 and the delivery line 21a; and a hydraulic system controller 30 configured to open the release control valve 28 if an engine revolution speed N becomes lower than a set value Ns.
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公开(公告)号：US20200009477A1
公开(公告)日：2020-01-09
申请号：US16440524
申请日：2019-06-13
申请人： Eric Amato
发明人： Eric Amato
IPC分类号： B01D19/00 , F15B1/26 , F15B21/047 , B04C5/04 , B04C5/081
摘要： A vortex reservoir for separation of an aerated portion of a hydraulic fluid includes an upper chamber and a lower chamber, in fluid communication with the upper chamber, having a lower chamber sidewall. The lower chamber includes a lower lower chamber and an upper lower chamber. The lower chamber includes a lower chamber partitioning plate. The lower chamber partitioning plate is located between the lower lower chamber and the upper lower chamber. The lower lower chamber is in fluid communication with the upper lower chamber via a gap between the lower chamber partitioning plate and the lower chamber sidewall.
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公开(公告)号：US11480200B2
公开(公告)日：2022-10-25
申请号：US17261611
申请日：2019-07-24
发明人： Brian Slattery , Bipin Kashid
IPC分类号： F16K11/04 , F15B13/043 , F15B21/047 , F16K11/044
摘要： An example valve includes: (i) a valve body comprising a supply port and an operating port; (ii) a sleeve comprising a first opening fluidly coupled to the supply port, a second opening fluidly coupled to the operating port, and a seat; (in) a spool configured to move axially within the sleeve, wherein the spool is configured to he seated on the seat of the sleeve when the valve is unactuated, and wherein when the valve is actuated, the spool moves such that a gap is formed at the seat; and (iv) a flow restriction disposed downstream of the gap, wherein when the valve is actuated, fluid is allowed to flow from the supply port through the first opening and the gap and through die flow′ restriction prior to flowing through the second opening to the operating port, such that the flow restriction generates an increased pressure level at the gap.
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公开(公告)号：US11028845B2
公开(公告)日：2021-06-08
申请号：US16321964
申请日：2016-09-13
发明人： Joseph A. Beisel
摘要： A monitoring system for a plurality of pressure pumps may include, for each pump, a strain gauge, a position sensor and a pressure transducer. A strain gauge may be positionable on each pump to generate a strain measurement corresponding to strain in each pump. A position sensor may be positionable on each pump to generate a position measurement corresponding to a position of a rotating member corresponding of each pump. A pressure transducer is positionable on each pump to generate a boost pressure measurement that is usable with the strain measurement and the position measurement to determine a cavitation threshold for each pump.
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公开(公告)号：US10801523B2
公开(公告)日：2020-10-13
申请号：US16184502
申请日：2018-11-08
发明人： Patrick P. Lacher
IPC分类号： F15B11/024 , F15B11/08 , F15B21/047 , E02F9/22 , E02F9/02 , F15B13/02 , E02F3/96 , E02F3/32
摘要： Disclosed embodiments include travel motor hydraulic circuits for controlling the provision of hydraulic fluid to a travel motor. The travel motor hydraulic circuits include a counterbalance valve configured to block the flow of hydraulic fluid when in a neutral position to prevent unintended movement of a power machine, and an anti-cavitation valve configured to direct flow of hydraulic fluid back to the travel motor to prevent cavitation.
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公开(公告)号：US10233843B2
公开(公告)日：2019-03-19
申请号：US14776317
申请日：2014-03-12
发明人： Rusi Taleyarkhan
IPC分类号： G01N13/02 , F02C7/22 , B63H1/18 , F15B21/047
摘要： A method for generating cavitation resistance in a liquid, a portion of which can be in contact with a surface is disclosed. The disclosed method can be carried out by pressure-treating the liquid, the liquid portion in contact with the surface, and/or the surface for a sufficient time to develop resistance to cavitation. The disclosed method can be carried out when the surface is made of a material having a surface roughness that is greater than the rc of the liquid. Suitable surfaces include borosilicate glass, drawn glass, copper, lead, steel, cast iron, metal alloys and concrete. The surfaces can be ship and boat propeller surfaces, the interior of fuel lines and fuel storage containers or any other surface where cavitation can occur.
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公开(公告)号：US20230022750A1
公开(公告)日：2023-01-26
申请号：US17758385
申请日：2021-01-04
IPC分类号： F15B21/047 , F15B11/024 , F15B21/08
摘要： The present invention relates to a stand-alone or inbuilt logical element associated with a hydraulic system for effective regeneration to improve the efficiency of any hydraulic system of a machine or equipment, including but not limited to farm machinery, industrial machinery, construction and mining machinery which uses hydraulic system. The logical element senses the cavitation or low pressure in the hydraulic system and automatically regulates and diverts the portion of hydraulic oil flow to caveated and required areas by regenerating through the anti-cavitation feature of the valve by automatically sensing and applying selective restriction to the set or adjustable pressure limit for the passage of oil.
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