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公开(公告)号：US10173435B2
公开(公告)日：2019-01-08
申请号：US15432400
申请日：2017-02-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Erik D. Torniainen , David P. Markel
Abstract: A fluid ejection device including, at least, one recirculation system is disclosed. Such recirculation system contains, at least, one drop generator, recirculation channels that include an inlet channel, an outlet channel and a connection channel and a fluid feedhole that communicates with the drop generator via the inlet channel and the outlet channel of the recirculation channel. The recirculation channels can be asymmetrical with reference to the drop generator.
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公开(公告)号：US20180215148A1
公开(公告)日：2018-08-02
申请号：US15747835
申请日：2015-10-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Tsuyoshi Yamashita , Erik D. Torniainen , Nicholas McGuinness , David P. Markel
IPC: B41J2/14
CPC classification number: B41J2/14016 , B41J2/1404 , B41J2/14056 , B41J2002/14467 , B41J2202/11 , B41J2202/12
Abstract: A fluid ejection device includes a fluid slot, a first fluid ejection chamber communicated with the fluid slot and including a first drop ejecting element, a second fluid ejection chamber communicated with the fluid slot and including a second drop ejecting element, a fluid circulation path communicated with the first fluid ejection chamber and the second fluid ejection chamber, and a fluid circulating element within the fluid circulation path.
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公开(公告)号：US09981265B2
公开(公告)日：2018-05-29
申请号：US15134300
申请日：2016-04-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Pavel Kornilovich , Erik D. Torniainen , David P. Markel
IPC: F15D1/00 , F15D1/02 , B01L3/00 , B01F13/00 , B01F5/02 , B01F5/10 , B01F5/00 , F01D1/00 , F01D3/00
CPC classification number: B01L3/502715 , B01F5/0275 , B01F5/10 , B01F13/0059 , B01L3/50273 , B01L3/502738 , B01L3/502769 , B01L2200/0636 , B01L2300/0816 , B01L2300/0861 , B01L2300/0867 , B01L2300/088 , B01L2400/0406 , B01L2400/0415 , B01L2400/043 , B01L2400/0433 , B01L2400/0439 , B01L2400/0442 , B01L2400/0478 , B01L2400/0633 , F01D1/00 , F01D3/00
Abstract: A microfluidic mixing device comprises a main channel and a number of secondary channels extending from a portion of the main channel and entering another portion of the main channel. A number of actuators are located in the secondary channels to pump fluids through the secondary channels. A microfluidic mixing system comprises a microfluidic mixing device. The microfluidic mixing device comprises a main fluid mixing channel, a number of main channel actuators to pump fluid through the main fluid mixing channel, a number of secondary channels fluidly coupled to the main fluid mixing channel, and a number of secondary channel actuators to pump fluids through the secondary channels. The microfluidic mixing device also comprises a fluid source, and a control device to provide fluids from the fluid source to the microfluidic mixing device and activate the main channel actuators and secondary channel actuators.
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公开(公告)号：US20180056649A1
公开(公告)日：2018-03-01
申请号：US15793649
申请日：2017-10-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Brian M. Taff , Erik D. Torniainen , Daniel A. Kearl
CPC classification number: B41J2/04551 , B41J2/0458 , B41J2/04581 , B41J2/04588 , B41J2/04596 , B41J2/14056
Abstract: An inkjet printhead includes an inkjet nozzle with a main actuator and a peripheral actuator in a firing chamber. A determination is made as to whether the inkjet nozzle has sat idle, e.g., not firing for a threshold period of time. When the inkjet nozzle has sat idle, both the main actuator and the peripheral actuator are activated to jet at least one ink drop. When the inkjet nozzle has not sat idle, only the main actuator is activated to jet ink drops.
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公开(公告)号：US20170151807A1
公开(公告)日：2017-06-01
申请号：US15432400
申请日：2017-02-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Erik D. Torniainen , David P. Markel
CPC classification number: B41J2/18 , B01L3/502715 , B01L3/50273 , B01L3/502746 , B01L2300/0816 , B01L2300/088 , B01L2300/123 , B01L2400/0481 , B01L2400/082 , B41J2/1404 , B41J2/14201 , B41J2/1753 , B41J2002/14467 , B41J2202/12 , F04B19/006 , F04B19/20 , F04B19/24
Abstract: A fluid ejection device including, at least, one recirculation system is disclosed. Such recirculation system contains, at least, one drop generator, recirculation channels that include an inlet channel, an outlet channel and a connection channel and a fluid feedhole that communicates with the drop generator via the inlet channel and the outlet channel of the recirculation channel. The recirculation channels can be asymmetrical with reference to the drop generator.
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Patent Agency Ranking
公开(公告)号：US20160341337A1
公开(公告)日：2016-11-24
申请号：US15111361
申请日：2014-01-29
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Erik D. Torniainen , Pavel Kornilovich , David P. Markel
Abstract: A microfluidic valve comprises a first reservoir, a second reservoir, an inertial pump and a channel connecting the first reservoir to the second reservoir. The second reservoir is to receive fluid from the first reservoir through the channel under a pressure gradient. The inertial pump is within the channel proximate the second reservoir and distant the first reservoir.
Abstract translation: 微流体阀包括第一储存器，第二储存器，惯性泵和将第一储存器连接到第二储存器的通道。 第二储存器是在压力梯度下通过通道从第一储存器接收流体。 惯性泵在靠近第二储存器的通道内，并且远离第一储存器。
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公开(公告)号：US20160318015A1
公开(公告)日：2016-11-03
申请号：US15205900
申请日：2016-07-08
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Pavel Kornilovich , Alexander Govyadinov , David P. Markel , Erik D. Torniainen
IPC: B01L3/00
CPC classification number: B41J2/18 , B01L3/502715 , B01L3/50273 , B01L3/502746 , B01L2300/0816 , B01L2300/088 , B01L2300/123 , B01L2400/0481 , B01L2400/082 , B41J2/1404 , B41J2/14201 , B41J2/1753 , B41J2002/14467 , B41J2202/12 , F04B19/006 , F04B19/20 , F04B19/24
Abstract: A network of microfluidic channels may include at least three loops interconnected at a junction. Each of the loops may include a fluid channel having a length extending from the junction to a second end; and a fluid actuator along the fluid channel and located at a first distance from junction along the length of the fluid channel and at a second distance less than the first distance from the second end. Activation of the fluid actuator of selected ones of the at least three loops may selectively produce net fluid flow in different directions about the loops. In one implementation, a fluid channel having a fluid actuator may have a bridging portion that extends over another fluid channel.
Abstract translation: 微流体通道的网络可以包括在连接处互连的至少三个回路。 每个环可以包括具有从连接点延伸到第二端的长度的流体通道; 以及沿所述流体通道的流体致动器，并且沿着所述流体通道的长度位于距离结点的第一距离处，并且在距离所述第二端小的第一距离处的第二距离处。 激活至少三个循环中选定的循环的流体致动器可选择性地围绕回路产生不同方向的净流体流动。 在一个实施方案中，具有流体致动器的流体通道可具有在另一流体通道上延伸的桥接部分。
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公开(公告)号：US20230279876A1
公开(公告)日：2023-09-07
申请号：US18196928
申请日：2023-05-12
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Erik D. Torniainen , Alexander Govyadinov , Pavel Kornilovich , David P. Markel
CPC classification number: F04F7/00 , B01L3/50273 , B01L3/502738 , B81B1/006 , F04B53/10 , B01L2200/141 , B01L2200/16 , B01L2400/0605 , B81B2201/051 , B81B2203/0338
Abstract: The present disclosure is drawn to inertial pumps. An inertial pump can include a microfluidic channel, a fluid actuator located in the microfluidic channel, and a check valve located in the microfluidic channel. The check valve can include a moveable valve clement, a narrowed channel segment located upstream of the moveable valve element, and a blocking element formed in the microfluidic channel downstream of the moveable valve element. The narrowed channel segment can have a width less than a width of the moveable valve element so that the moveable valve element can block fluid flow through the check valve when the moveable valve element is positioned in the narrowed channel segment. The blocking element can be configured such that the blocking element constrains the moveable valve element within the check valve while also allowing fluid flow when the moveable valve element is positioned against the blocking element.
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公开(公告)号：US11439963B2
公开(公告)日：2022-09-13
申请号：US16300182
申请日：2016-07-08
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： David P. Markel , Erik D. Torniainen , Alexander Govyadinov , Pavel Kornilovich
IPC: B01F13/00 , B01F15/02 , B01F15/04 , B01L3/00 , B41J2/175 , F04B19/00 , B01F33/30 , B41J2/14 , G01N35/10 , B01F33/301 , B01F35/82 , B01F35/71 , B01F35/83 , B01D15/16 , B01F101/23 , B01F101/00 , B81B1/00
Abstract: Examples include microfluidic devices. Example microfluidic devices include a first microfluidic channel, a second microfluidic channel, and a third microfluidic channel fluidly coupled to the first microfluidic channel and the second microfluidic channel via a fluid junction. A fluid actuator is disposed in the third microfluidic channel to actuate to thereby pump a first fluid and a second fluid into the third microfluidic channel.
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公开(公告)号：US11209102B2
公开(公告)日：2021-12-28
申请号：US15111361
申请日：2014-01-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Alexander Govyadinov , Erik D. Torniainen , Pavel Kornilovich , David P. Markel
Abstract: A microfluidic valve comprises a first reservoir, a second reservoir, an inertial pump and a channel connecting the first reservoir to the second reservoir. The second reservoir is to receive fluid from the first reservoir through the channel under a pressure gradient. The inertial pump is within the channel proximate the second reservoir and distant the first reservoir.
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