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公开(公告)号：US11905981B2
公开(公告)日：2024-02-20
申请号：US18310080
申请日：2023-05-01
IPC分类号： F15B21/04 , F15B21/048
CPC分类号： F15B21/048 , F15B2201/51 , F15B2211/205
摘要： A system for automatically actuating a hydraulic accumulator—useful for oil collection systems—capable of operation while maintaining a zero or near zero draw of electrical energy.
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公开(公告)号：US20220412382A1
公开(公告)日：2022-12-29
申请号：US17851299
申请日：2022-06-28
发明人： Adam ZAWISZA
IPC分类号： F15B21/048 , F15B21/044 , F15B21/00
摘要： A twin chamber air dryer for a pneumatic system of a commercial vehicle comprises: a supply inlet port, a supply outlet, a compressor control outlet, and an exhaust outlet; a first desiccant cartridge and a second desiccant cartridge, to be operated alternately; a toggling valve assembly for switching between the first and second desiccant cartridges; a pneumatically controlled purge valve switchable between a blocking basic position and an activated position; and a solenoid valve assembly. The solenoid valve assembly comprises a directional control solenoid valve for receiving an electrical direction control signal and controlling the toggling valve assembly, a regeneration solenoid valve for receiving an electrical regeneration control signal and providing pressurized air in regeneration phases of the desiccant cartridge, and a governor solenoid valve for receiving an electrical governor control signal and controlling the purge valve and a compressor mode.
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公开(公告)号：US11413734B2
公开(公告)日：2022-08-16
申请号：US16654315
申请日：2019-10-16
摘要： A fastener driving tool with a working cylinder and a piston, the piston outer surface having a lubricant-saturated foam material that stores and dispenses lubricant into the piston-cylinder wall interface, thereby increasing the performance and lifespan of the tool. Another embodiment discloses a two-part piston in which the bottom portion is made of metal and absorbs the main mechanical loading forces of the piston drive and return strokes, and the top portion is made of a non-metallic material that has surfaces that act as sliding bearings against the inner wall of the cylinder.
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公开(公告)号：US20210332837A1
公开(公告)日：2021-10-28
申请号：US16857188
申请日：2020-04-24
申请人： YAN-YUH CHEN , TZONG-YOU CHEN , HUEY-JEN CHEN
发明人： YAN-YUH CHEN , TZONG-YOU CHEN , HUEY-JEN CHEN
IPC分类号： F15B21/048 , F15B21/00
摘要： An automatic water handling device of an air compressor includes a barrel and a pneumatic cylinder. The barrel has an interior space in which a division board formed with through holes is mounted to define a first chamber in which a desiccant agent is disposed and a second chamber. The barrel has a gas outlet opening connected with a gas accumulation tank. The second chamber has a gas inlet opening to receive compressed air. An electromagnetic valve is in connection with the second chamber and is connected to a timer for activation at predetermined time points by the timer to drive the pneumatic cylinder to open a control valve to drain off water removed from compressed air.
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公开(公告)号：US10767673B2
公开(公告)日：2020-09-08
申请号：US16169225
申请日：2018-10-24
IPC分类号： G01L19/06 , F15B20/00 , F15B21/048 , F15B11/042
摘要： Example aspects of an over-pressure protection system and a method for using an over-pressure protection system are disclosed. The over-pressure protection system can comprise a main body comprising a main body housing, the main body housing defining a main body chamber; an incompressible fluid received in the main body chamber, the fluid defining a fluid pressure; a pressure sensor for measuring the fluid pressure of the incompressible fluid, the pressure sensor configurable an activated mode and a deactivated mode; a first barrier movable between a first position and a second position; wherein the over-pressure protection system is configurable an under-pressure configuration, wherein the pressure of the incompressible fluid is below a threshold pressure, and an over-pressure configuration, wherein the pressure of the incompressible fluid is equal to or above the threshold pressure; and a control system configuring the pressure sensor in the deactivated mode in the over-pressure configuration
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公开(公告)号：US10731679B2
公开(公告)日：2020-08-04
申请号：US16271224
申请日：2019-02-08
申请人： Festo SE & Co. KG
发明人： Pascal Unterdorfer
IPC分类号： F15B21/04 , F15B21/048 , F15B19/00
摘要： A consumer control device, with which an external consumer device can be supplied with compressed air in a controlled manner, contains a compressed air maintenance unit, equipped with a proportional pressure regulating valve that can be electrically actuated, which is connectable via an outlet channel with the consumer device to be actuated. In the outlet channel an electrically controllable shut-off valve and an outlet pressure sensor are connected, both of which communicate with an internal electronic control unit, which is also supplied with information on the air flow in the outlet channel. The consumer control device can be operated according to a similarly proposed method, in that the consumer device in a normal operating phase is supplied with compressed air by the shut-off valve that is in the release position, which is regulated by a proportional pressure regulating valve adopting working mode at a working pressure value.
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公开(公告)号：US20200240446A1
公开(公告)日：2020-07-30
申请号：US16755898
申请日：2018-10-02
发明人： Karsten Schnittger
IPC分类号： F15B21/048 , F15B21/14 , F15B21/044 , B01D53/22 , B01D53/04
摘要： An air-preparation device for a motor vehicle, including: at least one first compressed air connection and a second compressed air connection; and a first air-preparation component and a second air-preparation component; wherein the first air-preparation component has at least one first solenoid valve, a second solenoid valve and a third solenoid valve, a first air drier cartridge, a first main nonreturn valve, a first regeneration nonreturn valve, a first regeneration throttle and a first inlet valve, wherein the second air-preparation component has at least one second air drier cartridge, a second main nonreturn valve, a second regeneration nonreturn valve, a second regeneration throttle and a second inlet valve, wherein the first solenoid valve and the second solenoid valve are for controlling the first air-preparation component, and wherein a control line is configured so that the second air-preparation component is connected to the third solenoid valve of the first air-preparation component.
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公开(公告)号：US11460055B2
公开(公告)日：2022-10-04
申请号：US16755898
申请日：2018-10-02
发明人： Karsten Schnittger
IPC分类号： F15B21/048 , B60T17/00 , B01D53/04 , B01D53/22 , F15B21/044 , F15B21/14
摘要： An air-preparation device for a motor vehicle, including: at least one first compressed air connection and a second compressed air connection; and a first air-preparation component and a second air-preparation component; wherein the first air-preparation component has at least one first solenoid valve, a second solenoid valve and a third solenoid valve, a first air drier cartridge, a first main nonreturn valve, a first regeneration nonreturn valve, a first regeneration throttle and a first inlet valve, wherein the second air-preparation component has at least one second air drier cartridge, a second main nonreturn valve, a second regeneration nonreturn valve, a second regeneration throttle and a second inlet valve, wherein the first solenoid valve and the second solenoid valve are for controlling the first air-preparation component, and wherein a control line is configured so that the second air-preparation component is connected to the third solenoid valve of the first air-preparation component.
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公开(公告)号：US11300144B2
公开(公告)日：2022-04-12
申请号：US16387198
申请日：2019-04-17
申请人： WABCO Europe BVBA
摘要： An air supply unit for a pneumatic system is provided herein. The unit includes a compressor inlet for receiving compressed air in a supply mode. The unit further includes a consumption outlet for connecting at least one consumption circuit. The unit further includes an air processing unit connected to the compressor inlet for drying and filtering the compressed air and delivering dried compressed air at its outlet. The unit further includes a supply line extending from the outlet to the consumption outlet. The unit further includes a purge tank connected to the supply line. The purge tank is connected to the supply line through a throttle for pressure reduction of the purge air. In order to realize a short filling time, the purge tank is further connected to the supply line by a filling valve. The filling valve is open in the supply mode and blocking in the purge mode.
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公开(公告)号：US20210197114A1
公开(公告)日：2021-07-01
申请号：US17058010
申请日：2019-04-30
发明人： Max MICHALSKI , Karsten SCHNITTGER
摘要： An air preparation device having an electronic control unit for supplying at least one load circuit of a vehicle with dried system air, includes an air dryer unit for drying compressed air produced by an pneumatically switchable compressor. The air dryer unit supplies the at least one load circuit with dried compressed air via at least one overflow valve. An electromagnetic regeneration valve is provided which is connected to the control unit and returns dried compressed air along a regeneration path through the air dryer unit in order to regenerate the air dryer unit. An electromagnetic compressor control valve is provided which is connected to the control unit, for switching the pneumatically switchable compressor on and off via a pneumatic switching port, on the basis of a system pressure measurement value determined by at least one pressure sensor and supplied to the electronic control unit as an input signal. For redundant pneumatic compressor activation, a pneumatically pilot-controlled further compressor control valve is provided, to which the system pressure or a pressure proportional thereto is applied at a control inlet in order to switch on the compressor by activation of the pneumatic switching port after the system pressure has dropped below a lower limit value.
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