Abstract: A track chain member includes a shoe member, and a first rail member extending from the shoe member. The first rail member includes a first lug defining a first bore defining a first longitudinal axis and including a first bushing retention shelf disposed in the first bore, a second lug including a second bushing retention shelf disposed in the second bore. A third lug extends in a direction opposite that of the first lug and second lug and is disposed axially between the first lug and the second lug.

Abstract: A track chain member comprises a shoe member, and a first rail member extending from the shoe member, wherein the first rail member defines a track chain traveling direction and a lateral direction generally perpendicular to track chain traveling direction, a first support surface extending generally in both the track chain traveling direction and the lateral direction defining an outer lateral extremity, and a first crest shaped member disposed laterally adjacent the outer lateral extremity of the first support surface.

Abstract: A track chain member comprises a shoe member defining a track chain traveling direction and a lateral direction perpendicular to the track chain traveling direction and a first rib defining a first concave radial portion.

Abstract: A track chain member comprising a shoe member defining a track chain traveling direction and a lateral direction, the shoe member further defining a first lateral end, a second lateral end, and a ground engaging surface spanning from the one end to the other end; wherein the shoe member further defines a first side void proximate the first lateral end, a second side void proximate the second lateral end, and the first side void terminates a first predetermined distance from the first lateral end and the second side void terminates a second predetermined distance from the second lateral end.

Abstract: Systems, methods, and computer media for calibrating user-mounted devices are provided. An external device capable of providing calibration data to a user-mounted device worn by a user is identified. An identification acknowledgement is received from the external device. A device calibration mode is entered in which calibration data describing the user-mounted device is received by the user-mounted device. The calibration data is based at least in part on sensor data acquired and normalized by the external device. The calibration data is then received. The calibration data includes at least one determined pose or body measurement of the user and a calculated alignment of the user-mounted device relative to the user. The user-mounted device is calibrated using the received calibration data.

Abstract: A track chain member comprises a shoe member defining a track chain traveling direction and a lateral direction perpendicular to the track chain traveling direction, the shoe member further defining a first lateral end, a second lateral end, and a ground engaging surface spanning from the first lateral end to the second lateral end; wherein the shoe member further defines a main central void disposed on the ground engaging surface that is centered along the lateral direction of the shoe member with respect to the first and the second lateral ends.

Abstract: Techniques are discussed for controlling a vehicle, such as an autonomous vehicle, based on occluded areas in an environment. An occluded area can represent areas where sensors of the vehicle are unable to sense portions of the environment due to obstruction by another object. An occlusion grid representing the occluded area can be stored as map data or can be dynamically generated. An occlusion grid can include occlusion fields, which represent discrete two- or three-dimensional areas of driveable environment. An occlusion field can indicate an occlusion state and an occupancy state, determined using LIDAR data and/or image data captured by the vehicle. An occupancy state of an occlusion field can be determined by ray casting LIDAR data or by projecting an occlusion field into segmented image data. The vehicle can be controlled to traverse the environment when a sufficient portion of the occlusion grid is visible and unoccupied.

Abstract: A machine track includes a track shoe having a first outboard edge and a second outboard edge, and a first set of pin lugs and a second set of pin lugs. A roller pad is positioned between the sets of pin lugs and includes a roller contact surface extending between a first roller pad end and a second roller pad end. The first roller pad end includes a relatively softer material, and the second roller pad end includes a relatively harder material that forms a trimming edge for trimming off interfering material of an adjacent track shoe in a machine track that is plastically deformed by way of roller contact with the adjacent track shoe during service.

Abstract: A sprocket and an idler sharing a common wheel member are manufactured by a method that includes providing a common wheel member, providing an idler flange annular attachment, and providing a tooth annular attachment.

Abstract: Techniques are discussed for controlling a vehicle, such as an autonomous vehicle, based on occluded areas in an environment. An occluded area can represent areas where sensors of the vehicle are unable to sense portions of the environment due to obstruction by another object. An occlusion grid representing the occluded area can be stored as map data or can be dynamically generated. An occlusion grid can include occlusion fields, which represent discrete two- or three-dimensional areas of driveable environment. An occlusion field can indicate an occlusion state and an occupancy state, determined using LIDAR data and/or image data captured by the vehicle. An occupancy state of an occlusion field can be determined by ray casting LIDAR data or by projecting an occlusion field into segmented image data. The vehicle can be controlled to traverse the environment when a sufficient portion of the occlusion grid is visible and unoccupied.

Abstract: Swimming pool or spa gas heaters, cabinets, water header manifolds, and heat exchangers therefor are provided in accordance with the present disclosure, including: gas heaters having an air gap between a cabinet and combustion chamber to reduce heat transfer to sides of the cabinet; gas heaters having a user interface that is repositionable on a top panel; gas heater cabinets including a removable top panel that can be hung on a side panel; gas heaters having a built-in dual junction box; gas heaters having a top-accessible igniter and burner that are interlocked to maintain positioning thereof; adaptable water manifolds including connectable inlet and outlet fittings that adjust effective inlet and outlet positions; heat exchangers having a plurality of tube-and-fin subassemblies arranged in a semi-circular configuration; and water manifolds including internal cartridges that divide the water manifold into a plurality of chambers for improved circulation through a heat exchanger are disclosed.

Abstract: Techniques are discussed for controlling a vehicle, such as an autonomous vehicle, based on occluded areas in an environment. An occluded area can represent areas where sensors of the vehicle are unable to sense portions of the environment due to obstruction by another object. An occlusion grid representing the occluded area can be stored as map data or can be dynamically generated. An occlusion grid can include occlusion fields, which represent discrete two- or three-dimensional areas of driveable environment. An occlusion field can indicate an occlusion state and an occupancy state, determined using LIDAR data and/or image data captured by the vehicle. An occupancy state of an occlusion field can be determined by ray casting LIDAR data or by projecting an occlusion field into segmented image data. The vehicle can be controlled to traverse the environment when a sufficient portion of the occlusion grid is visible and unoccupied.

Abstract: Techniques are discussed for controlling a vehicle, such as an autonomous vehicle, based on occluded areas in an environment. An occluded area can represent areas where sensors of the vehicle are unable to sense portions of the environment due to obstruction by another object. An occlusion grid representing the occluded area can be stored as map data or can be dynamically generated. An occlusion grid can include occlusion fields, which represent discrete two- or three-dimensional areas of driveable environment. An occlusion field can indicate an occlusion state and an occupancy state, determined using LIDAR data and/or image data captured by the vehicle. An occupancy state of an occlusion field can be determined by ray casting LIDAR data or by projecting an occlusion field into segmented image data. The vehicle can be controlled to traverse the environment when a sufficient portion of the occlusion grid is visible and unoccupied.

Abstract: A track chain member according to an embodiment of the present disclosure comprises a first rib coupling the shoe member to the first lug; and a second rib coupling the shoe member to the second lug, defining a first side recess between the first rib and the second rib, the first side recess also extending from the exterior of the shoe member and underneath the first top surface, the first lateral end defining a first lateral end width along the track chain traveling direction, the first side recess also spanning the majority of the first lateral end width along the track chain traveling direction.

Abstract: A track chain member comprises a shoe member defining a track chain traveling direction and a lateral direction perpendicular to the track chain traveling direction, the shoe member further defining a first lateral end, a second lateral end, and a ground engaging surface spanning from the first lateral end to the second lateral end; wherein the shoe member further defines a main central void disposed on the ground engaging surface that is centered along the lateral direction of the shoe member with respect to the first and the second lateral ends.

Abstract: A track chain member may comprise a shoe member, and a first rail member extending from the shoe member. The first rail member may include a first lug defining a first bore defining a first longitudinal axis and including a first bushing retention shelf disposed in the first bore, a second lug including a second bushing retention shelf disposed in the second bore. A third lug may extend in a direction opposite that of the first lug and second lug and may be disposed axially between the first lug and the second lug.

Abstract: A glucose fuel cell for reception into a given constrained volume of implantation in a vertebrate in which the glucose fuel cell has access to fluid containing glucose. The fuel cell includes an anode adapted to oxidize the glucose, a cathode adapted to reduce an oxidant, and a membrane disposed between the anode and the cathode and separating the anode from the cathode. At least one of the anode or cathode define a flexible sheet that is geometrically deformed to be receivable into the given constrained volume of implantation and increase volumetric power density. Related methods of making a glucose fuel cell of this type and implantable assemblies including the glucose fuel cell are also disclosed.

Abstract: A track chain member comprises a shoe member defining a track chain traveling direction and a lateral direction perpendicular to the track chain traveling direction and a first rib defining a first concave radial portion.

Abstract: A track chain assembly comprises a plurality of interlocking track chain members wherein each track chain member defines a track chain traveling direction, a lateral direction perpendicular to the track chain traveling direction, and includes a shoe member defining a shoe width along the lateral direction; and a first track pad member defining a first track pad maximum width along the lateral direction, and a second track pad member defining a second maximum track pad width along the lateral direction, wherein a ratio of either track pad maximum widths to the shoe member width ranges from 1:4 to 3:4.

Abstract: A track chain member comprises a shoe member, and a first rail member extending from the shoe member, wherein the first rail member defines a track chain traveling direction and a lateral direction generally perpendicular to track chain traveling direction, a first support surface extending generally in both the track chain traveling direction and the lateral direction defining an outer lateral extremity, and a first crest shaped member disposed laterally adjacent the outer lateral extremity of the first support surface.