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公开(公告)号：US20170159847A1
公开(公告)日：2017-06-08
申请号：US15370633
申请日：2016-12-06
Applicant: Purdue Research Foundation
Inventor： Alina Alexeenko , Anthony George Cofer , Stephen Douglas Heister
CPC classification number: F16K99/0017 , B64G1/10 , B64G1/401 , B64G1/50 , F16K99/0036 , F16K2099/0092 , F16K2099/0094
Abstract: A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
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Patent Agency Ranking
公开(公告)号：US10995879B2
公开(公告)日：2021-05-04
申请号：US15370633
申请日：2016-12-06
Applicant: Purdue Research Foundation
Inventor： Alina Alexeenko , Anthony George Cofer , Stephen Douglas Heister
Abstract: A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
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公开(公告)号：US11867319B2
公开(公告)日：2024-01-09
申请号：US17306811
申请日：2021-05-03
Applicant: Purdue Research Foundation
Inventor： Alina Alexeenko , Anthony George Cofer , Stephen Douglas Heister
CPC classification number: F16K99/0017 , B64G1/10 , B64G1/401 , B64G1/50 , F16K99/0036 , F16K2099/0092 , F16K2099/0094
Abstract: A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
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公开(公告)号：US20240175522A1
公开(公告)日：2024-05-30
申请号：US18389880
申请日：2023-12-20
Applicant: Purdue Research Foundation
Inventor： Alina Alexeenko , Anthony George Cofer , Stephen Douglas Heister
CPC classification number: F16K99/0017 , B64G1/10 , B64G1/401 , B64G1/50 , F16K99/0036 , F16K2099/0092 , F16K2099/0094
Abstract: A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
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公开(公告)号：US20220057018A1
公开(公告)日：2022-02-24
申请号：US17306811
申请日：2021-05-03
Applicant: Purdue Research Foundation
Inventor： Alina Alexeenko , Anthony George Cofer , Stephen Douglas Heister
Abstract: A microfabricated valve with no moving parts. In one embodiment, the valve includes a reservoir of a liquid that is in fluid communication with an outlet channel having a throat that is less than 100 microns wide. Preferably, the channel is an elongated slit. The configuration of channel is adapted and configured such that surface tension of the liquid prevents flow out of the channel. A heater increases the temperature of the meniscus of the fluid, until a portion of the fluid is ejected from the channel. The ejection of the fluid creates both a thrusting effect and a cooling effect.
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公开(公告)号：US11142350B2
公开(公告)日：2021-10-12
申请号：US16662989
申请日：2019-10-24
Applicant: Purdue Research Foundation
Inventor： David Allen Spencer , Anthony George Cofer
Abstract: A drag sail deployment assembly has an enclosure supporting four boom deployment assemblies and four retractable booms. Each boom deployment assembly includes a hub and motor. The hub is configured to hold a wound boom and to rotatably pay out the wound boom. The motor is disposed at least in part within an interior of the hub, and rotates the hub. Each boom is associated with a corresponding one of the four boom deployment assemblies. Each boom includes a plurality of spring elements disposed within a sleeve. Each boom is wound onto the hub of the corresponding boom deployment assembly in a first configuration wherein the spring elements are compressed toward each other. Each boom is configured to expand into a second configuration wherein central portions of the spring elements are spaced apart from each other when the boom is unwound from the hub of the corresponding boom deployment assembly.
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