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Publication No: US2024133367 [USA] Application No: US18491436
Title: Bidirectional, linear and binary, segmented antagonistic servomechanism-based shape memory alloy (SMA) actuator
Publication Date: 25-04-2024 File Date: 19-10-2023
Inventor(s): Narayan Bhargaw Hari; Chandra Joshi Tilak; Rasheed Hashmi Syed Azhar; Kumar Srivastava Avanish; Pretesh John
IPC Classification: F03G7/06
Abstract: 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.
Startup Options: Advantages
  •  The present invention relates to actuation and can be used and explored for other applications wherein displacement with high actuation force is the critical requirement.
  • It finds extensive applications in industrial, domestic, and commercial sectors like automobile, aerospace, common appliances, energy, chemical processing, 3D printer filament extruder head motion, prosthetics, orthotics, robotics, and electronics (MEMS devices) industries for automation & control, heating & ventilation, safety & security, and bidirectional positioning such as linear, angular positioning and control, micro-displacement, etc.
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Industrial Applications Instrumentation, Appliances, Devices Applications [Instrumentation, Appliances, Devices] Mechanical Processes [Mechanical]