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11. 发明公开

US20240133367A1 BIDIRECTIONAL, LINEAR AND BINARY, SEGMENTED ANTAGONISTIC SERVOMECHANISM-BASED SHAPE MEMORY ALLOY (SMA) ACTUATOR 审中-公开
公开(公告)号：US20240133367A1
公开(公告)日：2024-04-25
申请号：US18491436
申请日：2023-10-19
申请人： COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
发明人： Bhargaw Hari NARAYAN , Joshi Tilak CHANDRA , Hashmi Syed Azhar RASHEED , Srivastava Avanish KUMAR , John PRETESH
IPC分类号： F03G7/06
CPC分类号： F03G7/0635 , F03G7/06143 , F03G7/0616 , F03G7/062 , F03G7/064 , F03G7/0665 , B33Y30/00
摘要： A Bidirectional, Linear and Binary, Segmented Antagonistic Servomechanism-based Shape Memory Alloy (SMA) Actuator comprising a main stroke transmitting lever (11 or 18) and a plurality of part-modules (15A or 15B) disposed in a closely spaced arrangement and adapted to undergo a reciprocal translation in a first direction. wherein, the part-modules comprising a plurality of segments having SMA elements (12). The invention provides two configurations arranged in ‘straight’ and ‘cross’ configurations of the SMA elements in the part-modules. Further above configuration are arranged in a tight close space however, the “cross” configuration provides additional 40% compactness. The configurations comprise a “S-type long tail” or “flipped F-type long tail” main stroke transmitting lever and plurality of “straight” or “cross” configurations part modules, respectively. The novel embodiment can be utilized for micro-positioning of 3D printer filament extruder head, linear and angular displacement applications such as robotic, prosthesis, bi-stable position control, latching-unlatching systems, and other wide engineering applications.

12. 发明公开

US20230287871A1 HYBRID ACTUATION DEVICE INCLUDING FLUIDLY COOLED SMA WIRES 审中-公开
公开(公告)号：US20230287871A1
公开(公告)日：2023-09-14
申请号：US18059484
申请日：2022-11-29
申请人： Toyota Motor Engineering & Manufacturing North America, Inc.
发明人： Michael P. Rowe
IPC分类号： F03G7/06 , B25J9/10 , A61F2/08
CPC分类号： F03G7/06143 , B25J9/1085 , A61F2/08 , F03G7/06112 , F03G7/062 , A61F2002/5066
摘要： A hybrid actuation device includes an artificial muscle, a first plate coupled to a second plate, and a shape memory alloy wire. The artificial muscle includes a housing, a first electrode and a second electrode, and a dielectric fluid. The housing includes a first film layer, a second film layer, an electrode region, and an expandable fluid region. The first electrode and the second electrode are each disposed in the electrode region of the housing. The dielectric fluid is disposed within the housing. The first plate and the second plate are positioned within the housing, the first plate positioned between the first film layer and the first electrode, and the second plate positioned between the second film layer and the second electrode. The shape memory alloy wire extends from the first plate to the second plate and through the dielectric fluid.

13. 发明公开

US20230184269A1 HYBRID ACTUATION DEVICES INCLUDING ALIGNMENT AIDS 审中-公开
公开(公告)号：US20230184269A1
公开(公告)日：2023-06-15
申请号：US18164224
申请日：2023-02-03
申请人： Toyota Motor Engineering & Manufacturing North America, Inc.
发明人： Michael P. Rowe , Max Herzog , Maduran Palaniswamy , Ryohei Tsuruta
IPC分类号： F15B15/10 , F03G7/06
CPC分类号： F15B15/103 , F03G7/062 , F03G7/06143
摘要： A hybrid actuation device that includes a first plate coupled to a second plate, a shape memory alloy wire coupled to the first plate, and an artificial muscle positioned between the first plate and the second plate. The artificial muscle includes a housing having an electrode region and an expandable fluid region, a first electrode and a second electrode each disposed in the electrode region of the housing and a dielectric fluid disposed within the housing. The expandable fluid region of the housing is positioned apart from a perimeter of the first plate and the second plate. A first alignment aid is positioned between the first plate and the first electrode, the first alignment aid having an inner surface facing the first plate and an outer surface facing the first electrode.

14. 发明授权

US12152570B2 Shape memory material member-based actuator with electrostatic clutch preliminary class 有权
公开(公告)号：US12152570B2
公开(公告)日：2024-11-26
申请号：US18172637
申请日：2023-02-22
申请人： Toyota Motor Engineering & Manufacturing North America, Inc.
发明人： Yufei Zhu , Paul A. Gilmore , Taewoo Nam , Rikin Gupta , Xintong Deng
IPC分类号： F03G7/06 , H02N13/00
CPC分类号： F03G7/06143 , F03G7/062 , H02N13/00 , F03G7/066
摘要： An actuator can include one or more shape memory material members and an electrostatic clutch. When an activation input is provided to the one or more shape memory material members, the one or more shape memory material members contract, which causes the actuator to morph into an activated configuration. A height of the actuator increases in the activated configuration. The electrostatic clutch can be configured to maintain the actuator in the activated configuration when the activation input to the one or more shape memory material members is discontinued. One or more processors can be operatively connected to selectively and independently activate the one or more shape memory material members and the electrostatic clutch.

15. 发明授权

US12140346B2 System and method for work recovery in a heat pump 有权
公开(公告)号：US12140346B2
公开(公告)日：2024-11-12
申请号：US17632415
申请日：2020-08-02
申请人： EXERGYN LTD.
发明人： Kevin O'Toole , Keith Warren , Richard Blackburn , Greg Pittam , Neil Dwyer , Michael Langan
IPC分类号： F25B30/04 , F03G7/06 , F25B23/00 , F25B30/00
CPC分类号： F25B30/04 , F03G7/0614 , F03G7/062 , F03G7/0646 , F25B23/00 , F25B30/00
摘要： The heat pump system and method for operating a heat pump system includes a first Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) core that is adapted to convert movement of the core into energy in response to a temperature change. A second Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) core is in fluid communication with the first core and adapted to convert movement of the second core into energy. A third Shape-Memory Alloy (SMA) or Negative Thermal Expansion (NTE) or elastocaloric core is in fluid communication with the first and second cores and adapted to convert movement of the third core into energy. The first core, second core and the third core are arranged in series and a control system provides waste pressure from the first core to the second core and/or third core.

16. 发明公开

US20240360818A1 TEMPERATURE DIFFERENTIAL ENGINE 审中-公开
公开(公告)号：US20240360818A1
公开(公告)日：2024-10-31
申请号：US18764796
申请日：2024-07-05
申请人： Rahim Fotuhi
发明人： Rahim Fotuhi
IPC分类号： F03G7/06
CPC分类号： F03G7/0641 , F03G7/062 , F03G7/0633
摘要： An engine includes a thermal unit, a force introducing unit applying a force to a shaft of the thermal unit in a first direction, and/or a switch assembly that switches between a first state and a second state. In the first state, the switch assembly transfers thermal energy from a source to the thermal unit, which causes the shaft to move in a second direction from a first position to a second position. The switch assembly switches to the second state (i) during movement of the shaft in the second direction, (ii) when the shaft reaches the second position, and/or (iii) when the shaft reaches a third position between the first position and the second position. In the second state, the switch assembly transfers thermal energy from the thermal unit to outside the thermal unit, which causes the shaft of the thermal unit to move in the first direction.

17. 发明授权

US11965491B2 Soft actuators with twisted coiled polymer actuators 有权
公开(公告)号：US11965491B2
公开(公告)日：2024-04-23
申请号：US17941079
申请日：2022-09-09
申请人： Toyota Motor Engineering & Manufacturing North America, Inc.
发明人： Yuyang Song , Shinnosuke Shimokawa , Danil V. Prokhorov , Umesh N. Gandhi
IPC分类号： F03G7/06 , B25J9/10 , B25J9/14 , B25J18/02 , B25J18/06
CPC分类号： F03G7/0612 , B25J9/1075 , B25J9/142 , B25J18/02 , B25J18/06 , F03G7/06143 , F03G7/0616 , F03G7/062
摘要： A soft actuator includes an origami structure with an inflatable hollow body formed from at least one of Dyneema fabric or Kevlar fabric, and a plurality of TCPAs formed from at least one of polyethylene terephthalate, spandex, and nylon. The soft actuator also includes a plurality of heating wires disposed on the plurality of TCPAs and a controller configured to selectively heat the plurality of heating wires such that the plurality of TCPAs are selectively actuated by being heated by the plurality of heating wires.

18. 发明授权

US11913436B2 Control of SMA haptic assembly 有权
公开(公告)号：US11913436B2
公开(公告)日：2024-02-27
申请号：US17798928
申请日：2021-02-17
申请人： CAMBRIDGE MECHATRONICS LIMITED
发明人： Mark Easton , Andrew Benjamin Simpson Brown , Marc-Sebastian Scholz
IPC分类号： F03G7/06 , G06F3/01 , H01H3/00
CPC分类号： F03G7/06143 , F03G7/062 , F03G7/064 , G06F3/016 , H01H2003/008
摘要： There is provided a method of driving a shape memory alloy haptic assembly comprising an actuator comprising shape memory alloy that is arranged on actuation to provide a haptic effect, the method comprising supplying drive current to the actuator successively during a pre-heating period in which the temperature of the shape memory alloy is raised without causing the shape memory alloy to provide the haptic effect and during an actuation period in which the temperature of the shape memory alloy is raised so as to cause the shape memory alloy to provide the haptic effect. A shape memory alloy haptic assembly is also provided.

19. 发明公开

US20230175495A1 DRIVING MECHANISM 审中-公开
公开(公告)号：US20230175495A1
公开(公告)日：2023-06-08
申请号：US18076579
申请日：2022-12-07
申请人： TDK TAIWAN CORP.
发明人： Yung-Yun CHEN , Kun-Shih LIN
IPC分类号： F03G7/06
CPC分类号： F03G7/062 , F03G7/0614
摘要： A driving mechanism is provided in the present disclosure, including a fixed portion, a first movable portion, and a first driving assembly. The first movable portion moves relative to the fixed portion in a first direction. The first driving assembly drives the first movable portion to move relative to the fixed portion in the first direction. The first driving assembly includes a coil and a magnetic element corresponding to the coil.

20. 发明授权

US12143773B2 Method for activating a gas, electrothermal gas actuator, and use of a gas actuator 有权
公开(公告)号：US12143773B2
公开(公告)日：2024-11-12
申请号：US17928144
申请日：2021-03-19
申请人： Christian-Albrechts-Universitaet zu Kiel
发明人： Fabian Schuett , Armin Reimers , Joerg Bahr , Lena Marie Saure , Florian Rasch , Jannik Rank , Nipon Deka , Rainer Adelung , Soeren Kaps
IPC分类号： H04R23/00 , F03G7/06 , H05B1/02 , H05B3/12
CPC分类号： H04R23/002 , F03G7/06114 , F03G7/0616 , F03G7/062 , F03G7/0646 , F03G7/066 , H05B1/0227 , H05B3/12 , H05B2214/04
摘要： A method for activating a gas, wherein an electrically conductive aeromaterial having a pore space comprising the gas is electrically contacted and at least one electric current, which varies over time, flows through the aeromaterial, wherein the aeromaterial exhales gas from the pore space when the electrical power consumption is increased and inhales gas from the surroundings of the aeromaterial when the power consumption is decreased, and wherein a temporally pulsed current having predefined pulse power levels, pulse durations and pulse spacings is fed through the aeromaterial and the temperature of the aeromaterial is changed by the time-varying current by 100° C. or more within one second or less. The invention also relates to an electrothermal gas actuator and to uses of a gas actuator.

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