Abstract: A building system that operates to receive a plurality of data samples from building equipment of the building and identity whether one or more data samples of the plurality of data samples are anomalous indicating that one or more pieces of the building equipment are possibly experiencing a fault. The building system operates to generate one or more data health scores for the building equipment based on whether the one or more data samples are anomalous, the one or more data health scores indicating quality levels of the plurality of data samples and generate user interface data configured to cause a user device to display a user interface providing indications of the one or more pieces of building equipment that are possibly experiencing the fault and the one or more data health scores.

Abstract: A thermostat for a building zone includes at least one of a model predictive controller and an equipment controller. The model predictive controller is configured to obtain a cost function that accounts for a cost of operating HVAC equipment during each of a plurality of time steps, use a predictive model to predict a temperature of the building zone during each of the plurality of time steps, and generate temperature setpoints for the building zone for each of the plurality of time steps by optimizing the cost function subject to a constraint on the predicted temperature. The equipment controller is configured to receive the temperature setpoints generated by the model predictive controller and drive the temperature of the building zone toward the temperature setpoints during each of the plurality of time steps by operating the HVAC equipment to provide heating or cooling to the building zone.

Abstract: A controller for equipment that operate to provide heating or cooling to a building or campus includes a processing circuit configured to obtain utility rate data indicating a price of resources consumed by the equipment to serve energy loads of the building or campus, obtain an objective function that expresses a total monetary cost of operating the equipment over an optimization period as a function of the utility rate data and an amount of the resources consumed by the equipment, determine a relationship between resource consumption and load production of the equipment, optimize the objective function over the optimization subject to a constraint based on the relationship between the resource consumption and the load production of the equipment to determine a distribution of the load production across the equipment, and operate the equipment to achieve the distribution.

Abstract: A lawnmower includes a frame, a pair of drive wheels, a front axle assembly, a first caster wheel, a second caster wheel, a first rod, a second rod, and a mower deck. The pair of drive wheels are coupled to a second end portion of the frame. The front axle assembly includes a bar pivotally coupled to a first end portion of the frame about a pivot axis. The first caster wheel is coupled to a first lateral end of the bar. The second caster wheel is coupled to a second lateral end of the bar. The first rod is coupled between the frame and the first lateral end of the bar. The second rod is coupled between the frame and the second lateral end of the bar. When the bar pivots about the pivot axis, the first caster wheel and the second caster wheel move relative to the frame.

Abstract: A zero turn radius lawnmower, such as a stand-on lawnmower, including a main frame having a first end portion and a second end portion, a pair of drive wheels operably coupled to the second end portion of the main frame and configured to be driven independently in both forward and reverse directions, and a front axle assembly pivotally coupled to the first end portion of the main frame about a single axis. The zero turn radius lawnmower also includes a pair of caster wheels coupled to respective ends of the front axle assembly such that the pair of caster wheels are able to move relative to the main frame, as well as a mower deck coupled to the main frame by at least one first linkage and coupled to the front axle assembly by at least one second linkage.

Abstract: A food pan well includes a base defining an internal cavity and a temperature regulating system disposed within the internal cavity. The base is configured to support a food pan such that the food pan is selectively suspendable within the internal cavity. The temperature regulating system includes a cooling assembly configured to facilitate cooling at least a sidewall of the food pan and a warming assembly configured to facilitate warming at least a bottom surface of the food pan.

Abstract: A food pan well includes a base defining an internal cavity and a temperature regulating system disposed within the internal cavity. The temperature regulating system includes an internal enclosure and at least one of a cooling assembly and a warming assembly. The internal enclosure is positioned within the internal cavity. The internal enclosure includes a bottom wall and a sidewall that extends around a periphery of the bottom wall. The bottom wall and the sidewall cooperatively define a temperature regulated cavity. The base is configured to support one or more food pans such that the one or more food pans are selectively suspendable within the temperature regulated cavity. The cooling assembly is positioned to facilitate cooling at least one of the one or more food pans and the warming assembly is positioned to facilitate warming at least one of the one or more food pans.

Abstract: A brake system for providing tactile feedback in a vehicle steering system. The brake system includes an input shaft, and a rotor responsive to the shaft to rotate in response to input steering wheel inputs. A friction element imparts a base load to the rotor, and an electromagnetic coil imparts a variable load to the rotor. A housing of the brake system includes a fixed component and an intermediate component threaded together to set the base load. An adjustable component of the housing is threaded to the intermediate component to calibrate the variable load. The friction element is disposed between, and engages, both the rotor and the intermediate housing to impart the feedback loads.

Abstract: A brake system for providing tactile feedback in a vehicle steering system. The brake system includes an input shaft, and a rotor responsive to the shaft to rotate in response to input steering wheel inputs. A friction element imparts a base load to the rotor, and an electromagnetic coil imparts a variable load to the rotor. A housing of the brake system includes a fixed component and an intermediate component threaded together to set the base load. An adjustable component of the housing is threaded to the intermediate component to calibrate the variable load. The friction element is disposed between, and engages, both the rotor and the intermediate housing to impart the feedback loads.

Abstract: A zero turn radius lawnmower, such as a stand-on lawnmower, including a main frame having a first end portion and a second end portion, a pair of drive wheels operably coupled to the second end portion of the main frame and configured to be driven independently in both forward and reverse directions, and a front axle assembly pivotally coupled to the first end portion of the main frame about a single axis. The zero turn radius lawnmower also includes a pair of caster wheels coupled to respective ends of the front axle assembly such that the pair of caster wheels are able to move relative to the main frame, as well as a mower deck coupled to the main frame by at least one first linkage and coupled to the front axle assembly by at least one second linkage.

Abstract: An apparatus for keeping a down hole drilling tool vertically aligned has a tubular body having an axis, an inner bore, at least one perpendicular channel and at least one set of steering elements disposed on opposed sides of the tubular body and engaging the at least one perpendicular channel of the tubular body. The at least one perpendicular channel permits the steering elements to move perpendicularly to the axis of the tubular body and restricts movement parallel to the axis of the tubular body. The first and second steering elements are engaged such that movement of the first or second steering element toward an extended position relative to the tubular body moves the other steering element toward a retracted position relative to the tubular body. Actuators are carried by the tubular body that selectively actuate the steering elements toward the extended position to steer the down hole drilling tool.

Abstract: A bearing assembly includes a tubular outer housing and a tubular inner mandrel. The outer housing has an exterior surface and an interior surface defining an interior bore. The inner mandrel has an exterior surface and an interior surface defining an interior mud flow channel. The inner mandrel is journaled for rotation within the interior bore of the outer housing. Pairs of diamond bearings having opposed curved bearing surfaces are disposed between the outer housing and the inner mandrel. One of each pair of opposed curved bearing surfaces being convex and being secured to one of the inner mandrel or outer housing and another of each pair of opposed curved bearing surfaces being concave and secured to another of the inner mandrel or outer housing. The opposed curved bearing surfaces accommodate limited relative misalignment and provide radial and axial support between the inner mandrel and the outer housing.

Abstract: An apparatus for keeping a down hole drilling tool vertically aligned has a tubular body having an axis, an inner bore, at least one perpendicular channel and at least one set of steering elements disposed on opposed sides of the tubular body and engaging the at least one perpendicular channel of the tubular body. The at least one perpendicular channel permits the steering elements to move perpendicularly to the axis of the tubular body and restricts movement parallel to the axis of the tubular body. The first and second steering elements are engaged such that movement of the first or second steering element toward an extended position relative to the tubular body moves the other steering element toward a retracted position relative to the tubular body. Actuators are carried by the tubular body that selectively actuate the steering elements toward the extended position to steer the down hole drilling tool.

Abstract: A training paddle for use by a swimmer comprises a base configured to accommodate a hand of the swimmer. A strap holds the base to the hand. A raised fin that extends upward from the base directs water away from flowing between the hand and the base.

Abstract: A diamond bearing assembly includes a first diamond bearing carrier and a second diamond bearing carrier. At least one industrial diamond is mounted on the first diamond bearing carrier, with each industrial diamond mounted on the first diamond bearing carrier defining a convex bearing surface. At least one industrial diamond is mounted on the second diamond bearing carrier, with each industrial diamond mounted on the second diamond bearing carrier defining a concave bearing surface. The concave bearing surfaces of the industrial diamonds on the second diamond bearing carrier accommodate and are in relative sliding engagement with the convex bearing surfaces of the industrial diamonds on the first diamond bearing carrier. This diamond bearing assembly can accommodate limited misalignment.

Abstract: A bearing assembly includes a tubular outer housing and a tubular inner mandrel. The outer housing has an exterior surface and an interior surface defining an interior bore. The inner mandrel has an exterior surface and an interior surface defining an interior mud flow channel. The inner mandrel is journaled for rotation within the interior bore of the outer housing. Pairs of diamond bearings having opposed curved bearing surfaces are disposed between the outer housing and the inner mandrel. One of each pair of opposed curved bearing surfaces being convex and being secured to one of the inner mandrel or outer housing and another of each pair of opposed curved bearing surfaces being concave and secured to another of the inner mandrel or outer housing.

Abstract: A bearing assembly has an outer housing, and an inner mandrel extending into outer housing. Radial bearing sleeves are positioned between the inner mandrel and the outer housing at both of ends of the outer housing. A thrust bearing assembly is positioned within the interior cavity of the outer housing, and includes a fixed bearing carrier fixed to the inner mandrel, first and second floating bearings carriers, and first and second pressure responsive fillers. Floating bearing carriers support hard face bearings that engage hard face bearings on the fixed bearing carrier to withstand axial loads. Pressure responsive fillers permit the floating bearing carriers limited angular adjustment in relation to the fixed bearing carrier to maintain their respective at least one hard face bearing in face to face relation notwithstanding deflections within required radial bearing tolerance.

Abstract: A training paddle for use by a swimmer comprises a base configured to accommodate a hand of the swimmer. A strap holds the base to the hand. A raised fin that extends upward from the base directs water away from flowing between the hand and the base.

Abstract: A method of fabricating a drive shaft for an earth drilling motor which includes providing a shaft having opposed ends. Gear profiles with teeth circumscribe each of the opposed ends. Teeth have an engaging face. End housings are provided for each of the opposed ends of the shaft and an interior bore is machined into each of the end housings. The interior bore receives one of the gear profiles at one of the opposed ends of the shaft, but won't accommodate rotation of the gear profiles. Radially spaced apertures are drilled through the end housings to provide drive key pockets with arcuate drive key engagement surfaces. Drive keys are inserted into the drive key pockets, with an arcuate surface of each drive key engaging the engagement surface of the end housings and the opposed surface of each drive key engaging the drive key engaging face of the teeth.

Abstract: A bearing assembly has an outer housing, and an inner mandrel extending into outer housing. Radial bearing sleeves are positioned between the inner mandrel and the outer housing at both of ends of the outer housing. A thrust bearing assembly is positioned within the interior cavity of the outer housing, and includes a fixed bearing carrier fixed to the inner mandrel, first and second floating bearings carriers, and first and second pressure responsive fillers. Floating bearing carriers support hard face bearings that engage hard face bearings on the fixed bearing carrier to withstand axial loads. Pressure responsive fillers permit the floating bearing carriers limited angular adjustment in relation to the fixed bearing carrier to maintain their respective at least one hard face bearing in face to face relation notwithstanding deflections within required radial bearing tolerance.