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, 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 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 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: 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: Exemplary embodiments are directed to a gas switching device including a body and a gas selector mechanism. The body includes an inlet and an outlet. The gas selector mechanism includes a first orifice in fluid communication with the inlet and a second orifice in fluid communication with the inlet. The gas selector mechanism includes a valve arm and a selector element. The selector element is configured to actuate the valve arm between a closed position and an open position. In the closed position, the selector element actuates the valve arm to close the second orifice for passage of a first type of gas through the first orifice. In the open position, the selector element actuates the valve arm to open the second orifice for passage of a second type of gas through both the first orifice and the second orifice.

Abstract: Exemplary embodiments are directed to swimming pool heat exchangers including a housing and one or more tube assemblies disposed within the housing. Each of the tube assemblies includes an elongated titanium tube and at least one fin welded to an outer surface of the elongated titanium tube. The elongated titanium tube and the at least one welded fin allow for corrosion resistance to swimming pool water while simultaneously allowing for improved heat transfer from the heat exchanger to the swimming pool water.

Abstract: Provided is a backwash valve comprising a body including a central tube extending along a length of the body, a first pool port and first filter port axially aligned at a first position along the body length, a second pool port and second filter port axially aligned at a second position along the body length, and a waste port; and a sliding gate including a stem connected to a gate body, the gate body including first and second chambers separated by an internal wall; the sliding gate movable between a filter position wherein fluid communication is provided among the first filter port, first chamber, and first pool port, and a backwash position wherein fluid communication is provided among the first filter port, second fluid chamber, and second pool port, and between the second filter port and waste port.

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: 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: Virtual objects are located for display in a head-mounted display (HMD) to provide an augment reality view to an HMD wearer. An HMD wearer's total field of view (TFOV) is classified into two or more regions. Additionally, a field of view (FOV) for the HMD wearer is determined. The FOV is compared with the two or more regions of the HMD wearer's TFOV. Responsive to this comparison, virtual objects are determined for display based on a location of the FOV relative to the two or more regions of the HMD wearer's TFOV. The virtual objects may then be displayed by the HMD at an appropriate location.

Abstract: Systems, methods, and computer media for estimating user eye gaze are provided. A plurality of images of a user's eye are acquired. At least one image of at least part of the user's field of view is acquired. At least one gaze target area in the user's field of view is determined based on the plurality of images of the user's eye. An enhanced user eye gaze is then estimated by narrowing a database of eye information and corresponding known gaze lines to a subset of the eye information having gaze lines corresponding to a gaze target area. User eye information derived from the images of the user's eye is then compared with the narrowed subset of the eye information, and an enhanced estimated user eye gaze is identified as the known gaze line of a matching eye image.

Abstract: Virtual objects are located for display in a head-mounted display (HMD) to provide an augment reality view to an HMD wearer. An HMD wearer's total field of view (TFOV) is classified into two or more regions. Additionally, a field of view (FOV) for the HMD wearer is determined. The FOV is compared with the two or more regions of the HMD wearer's TFOV. Responsive to this comparison, virtual objects are determined for display based on a location of the FOV relative to the two or more regions of the HMD wearer's TFOV. The virtual objects may then be displayed by the HMD at an appropriate location.

Abstract: Virtual images are located for display in a head-mounted display (HMD) to provide an augment reality view to an HMD wearer. Sensor data may be collected from on-board sensors provided on an HMD. Additionally, other day may be collected from external sources. Based on the collected sensor data and other data, the position and rotation of the HMD wearer's head relative to the HMD wearer's body and surrounding environment may be determined. After resolving the HMD wearer's head position, the HMD wearer's total field of view (TFOV) may be classified into regions. Virtual images may then be located in the classified TFOV regions to locate the virtual images relative to the HMD wearer's body and surrounding environment.

Abstract: A system for providing animation on reel games is disclosed. A gaming machine includes a plurality of reels each having symbols provided on an outer surface of each of the reels. A lighting system is configured to illuminate a selected symbol on at least one reel. A game controller generates a game outcome. A reel control unit determines the timing of illuminating of the selected symbol on the position of the symbol on the reel when it is illuminated.

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: Provided is a backwash valve comprising a body including a central tube extending along a length of the body, a first pool port and first filter port axially aligned at a first position along the body length, a second pool port and second filter port axially aligned at a second position along the body length, and a waste port; and a sliding gate including a stem connected to a gate body, the gate body including first and second chambers separated by an internal wall; the sliding gate movable between a filter position wherein fluid communication is provided among the first filter port, first chamber, and first pool port, and a backwash position wherein fluid communication is provided among the first filter port, second fluid chamber, and second pool port, and between the second filter port and waste port.