Abstract: Co-curable and co-cured UV/visible light-resistant composite material assembly precursors used to make composite material assemblies comprise a compatible co-curable and co-cured peel ply protective layer to impart selected surface characteristics to the co-curable and co-cured composite material assembly precursor prior to peel ply removal and composite material precursor incorporation into a larger assembly are disclosed.

Abstract: The disclosed system for interacting with objects in an extended reality (XR) environment generated by an XR system may include (1) neuromuscular sensors configured to sense neuromuscular signals from a wrist of a user and (2) at least one computer processor programmed to (a) determine, based at least in part on the sensed neuromuscular signals, information relating to an interaction of the user with an object in the XR environment and (b) instruct the XR system to, based on the determined information relating to the interaction of the user with the object, augment the interaction of the user with the object in the XR environment. Other embodiments of this aspect include corresponding apparatus, and computer programs recorded on one or more computer storage devices, each configured to perform the actions of the methods.

Abstract: Computerized systems, methods, kits, and computer-readable media storing code for implementing the methods are provided for interacting with a physical object in an augmented reality (AR) environment generated by an AR system. One such system includes: a plurality of neuromuscular sensors able to sense a plurality of neuromuscular signals from a user, and at least one computer processor. The neuromuscular sensors are arranged on one or more wearable devices worn by the user to sense the neuromuscular signals. The at least one computer processor is or are programmed to: determine, based at least in part, on the neuromuscular signals sensed by the neuromuscular sensors, information about an interaction of the user with the physical object in the AR environment generated by the AR system; and instruct the AR system to provide feedback based, at least in part, on the information about the interaction of the user with the physical object.

Abstract: Computerized systems, methods, kits, and computer-readable media storing code for implementing the methods are provided for interacting with a physical object in an augmented reality (AR) environment generated by an AR system. One such system includes: a plurality of neuromuscular sensors able to sense a plurality of neuromuscular signals from a user, and at least one computer processor. The neuromuscular sensors are arranged on one or more wearable devices worn by the user to sense the neuromuscular signals. The at least one computer processor is or are programmed to: determine, based at least in part, on the neuromuscular signals sensed by the neuromuscular sensors, information about an interaction of the user with the physical object in the AR environment generated by the AR system; and instruct the AR system to provide feedback based, at least in part, on the information about the interaction of the user with the physical object.

Abstract: Methods and apparatus for authenticating a user based on neuromuscular signals. The method comprises recording, using a plurality of neuromuscular sensors arranged on one or more wearable devices, a plurality of neuromuscular signals from a user; deriving a neuromuscular signature for the user from the plurality of neuromuscular signals and/or information based on the plurality of neuromuscular signals, wherein the neuromuscular signature is indicative of at least one personal characteristic of the user detected in the plurality of neuromuscular signals; and authenticating the user based on the derived neuromuscular signature.

Abstract: Computerized systems, methods, and computer-readable storage media storing code for implementing the methods are described for providing dynamically-updated musculoskeletal information. One such system includes a processor is programmed to: provide, as an input to a trained inference model, information based on a plurality of neuromuscular signals from a user and information based on at least one image of the user; determine, based on an output of the trained inference model, position information describing a spatial relationship between two or more connected musculoskeletal segments of the user and/or force information describing a force exerted by at least one musculoskeletal segment of the user; and output the position information and/or the force information.

Abstract: A bat includes a handle configured to be held by a user having a first end and a second end opposite the first end, the first end includes a knob having a larger diameter than the handle. The bat further includes a barrel extending from the second end of a handle, the barrel configured to strike a ball during play. The barrel includes a first layer primarily composed of a single wall aluminum, a double wall aluminum, a single wall titanium, a double wall titanium, a single wall composite, or a multi wall composite. A second layer is connected to the first layer and configured to support the first layer to prevent the first layer from fatiguing, permanent damage, or exceeding applicable rules limiting the hotness of the bat.

Abstract: A system for determining information associated a bat includes a bat having a handle, a barrel extending from the handle, and a cap connected to the barrel opposite the handle. The cap is connected to a first portion of a chip, and a second portion of the chip is connected to a portion of the bat other than the cap. A user device communicates with the chip on a network to receive the information associated with the bat or to receive second information used to obtain the information associated with the bat. The information associated with the bat may be whether the cap has been removed, which may identify whether the bat has been modified.

Abstract: Computerized systems, methods, and computer-readable storage media storing code for implementing the methods are provided for training an inference model used to generate a musculoskeletal representation. One such system includes a processor programmed to: determine, based on information obtained from at least one image, position information describing a spatial relationship between two or more connected musculoskeletal segments of a user; determine, based on a plurality of neuromuscular signals, force information; associate the position information with the force information; train an inference model to output a musculoskeletal representation consistent with the position information and/or the force information when neuromuscular input signals provided to the inference model have at least one predetermined characteristic, to produce an updated inference model; and cause the updated inference model to be stored in a memory.

Abstract: Computerized systems, methods, kits, and computer-readable media storing code for implementing the methods are provided for interacting with a physical object in an augmented reality (AR) environment generated by an AR system. One such system includes: a plurality of neuromuscular sensors able to sense a plurality of neuromuscular signals from a user, and at least one computer processor. The neuromuscular sensors are arranged on one or more wearable devices worn by the user to sense the neuromuscular signals. The at least one computer processor is or are programmed to: determine, based at least in part, on the neuromuscular signals sensed by the neuromuscular sensors, information about an interaction of the user with the physical object in the AR environment generated by the AR system; and instruct the AR system to provide feedback based, at least in part, on the information about the interaction of the user with the physical object.

Abstract: Computerized systems, methods, kits, and computer-readable storage media storing code for implementing the methods are provided for controlling an extended reality (XR) system. One such system includes: one or more neuromuscular sensors that sense neuromuscular signals from a user, and at least one computer processor. The neuromuscular sensor(s) is or are arranged on one or more wearable devices structured to be worn by the user to sense the neuromuscular signals. The at least one computer processor is or are programmed to: identify a first muscular activation state of the user based on the neuromuscular signals; determine, based on the first muscular activation state, an operation of an XR system to be controlled; identify a second muscular activation state of the user based on the neuromuscular signals; and output, based on the second muscular activation state, a control signal to the XR system to control the operation of the XR system.

Abstract: Computerized systems, methods, and computer-readable storage media storing code for implementing the methods are provided for training an inference model used to generate a musculoskeletal representation. One such system includes a processor programmed to: determine, based on information obtained from at least one image, position information describing a spatial relationship between two or more connected musculoskeletal segments of a user; determine, based on a plurality of neuromuscular signals, force information; associate the position information with the force information; train an inference model to output a musculoskeletal representation consistent with the position information and/or the force information when neuromuscular input signals provided to the inference model have at least one predetermined characteristic, to produce an updated inference model; and cause the updated inference model to be stored in a memory.

Abstract: Computerized systems, methods, and computer-readable storage media storing code for implementing the methods are provided, in which camera information is used to calibrate one or more inference models used to generate a musculoskeletal representation. One such system includes at least one camera configured to capture at least one image, a plurality of neuromuscular sensors configured to sense and record a plurality of neuromuscular signals from a user, and at least one computer processor. The plurality of neuromuscular sensors are arranged on one or more wearable devices structured to be worn by the user to obtain the plurality of neuromuscular signals. The at least one computer processor is programmed to calibrate the one or more inference models by updating at least one parameter associated with the one or more inference models based, at least in part, on the plurality of neuromuscular signals and the at least one image.

Abstract: Computerized systems, methods, and computer-readable storage media storing code for implementing the methods are described for providing dynamically-updated musculoskeletal information. One such system includes a processor is programmed to: provide, as an input to a trained inference model, information based on a plurality of neuromuscular signals from a user and information based on at least one image of the user; determine, based on an output of the trained inference model, position information describing a spatial relationship between two or more connected musculoskeletal segments of the user and/or force information describing a force exerted by at least one musculoskeletal segment of the user; and output the position information and/or the force information.

Abstract: Methods and apparatus for authenticating a user based on neuromuscular signals. The method comprises recording, using a plurality of neuromuscular sensors arranged on one or more wearable devices, a plurality of neuromuscular signals from a user; deriving a neuromuscular signature for the user from the plurality of neuromuscular signals and/or information based on the plurality of neuromuscular signals, wherein the neuromuscular signature is indicative of at least one personal characteristic of the user detected in the plurality of neuromuscular signals; and authenticating the user based on the derived neuromuscular signature.

Abstract: A bat composed of composite materials is disclosed. Multiple layers of composite material is wound, weaved or interlaced around a mandrel to create a tubular structure composed of composite material. The tubular structure is cured and the mandrel is removed, leaving a hollow tubular structure. A composite material insert is inserted to the tip of the tubular structure, to seal the tubular structure. The knob portion of the structure is likewise sealed. The tubular structure is wrapped with fibrous material, such that the fibrous material encompasses the knob, body and tip of the structure. The resulting structure is a bat wherein the knob of the bat transitions to the barrel of the bat and the barrel of the bat transitions seamlessly to the tip of the bat, to create a continuous composite structure. This solid structure is then injection molded, with a solid bat tip and knob in place.

Abstract: The present disclosure includes vane assemblies having a vane lever arm with an inclined profile. The inclined profile may engage with a complementary end of a vane shaft to locate, retain, and prevent rotation of the vane shaft and vane.

Abstract: A bat composed of composite materials is disclosed. Multiple layers of composite material is wound, weaved or interlaced around a mandrel to create a tubular structure composed of composite material. The tubular structure is cured and the mandrel is removed, leaving a hollow tubular structure. A composite material insert is inserted to the tip of the tubular structure, to seal the tubular structure. The knob portion of the structure is likewise sealed. The tubular structure is wrapped with fibrous material, such that the fibrous material encompasses the knob, body and tip of the structure. The resulting structure is a bat wherein the knob of the bat transitions to the barrel of the bat and the barrel of the bat transitions seamlessly to the tip of the bat, to create a continuous composite structure. This solid structure is then injection molded, with a solid bat tip and knob in place.

Abstract: Systems, devices, and methods described herein provide an input device having keys operatively coupled with light devices that emit light out of the keys. The input device is associated with different modes of operation. The light devices emit the light out of the keys responsive to a selected mode of operation being a first mode of operation. The light devices stop emitting the light out of the keys responsive to the selected mode of operation being a different, second mode of operation. The light devices are activated to indicate the selected mode of operation. One or more processors perform first functions associated with the keys during the first mode of operation and perform different, second functions associated with the same keys during the second mode of operation.

Abstract: Adhesion testing systems, methods of fabrication, and methods of testing are disclosed. Test systems include test coupons with non-metallic test adherends. Test coupons are configured to test bonds to the non-metallic test adherends under peeling stress and/or shearing stress. Test methods are simplified and rapid as compared to standard adhesion tests and include methods of accelerated environmental testing. Test methods also are adapted for qualitative and quantitative measurement of bond performance.