Abstract: Apparatuses configured to operate on an angled surface and associated systems and methods are disclosed herein. In some embodiments, an apparatus includes a body assembly, an arm assembly, and an end effector assembly. The body assembly can include a body portion, one or more wheels, one or more motors coupled to corresponding ones of the one or more wheels, and a plurality of cable connectors coupled to the rail. Individual ones of the cable connectors are configured to be coupled to corresponding cables. The arm assembly can be coupled to the body portion of the body assembly and can include a retriever. The end effector assembly can be releasably coupled to the retriever of the arm assembly and configured to carry a surface material.

Abstract: Devices configured to operate on an angled surface (e.g., a roof), and associated systems and methods are disclosed herein. In some embodiments, representative systems include an apparatus with a body assembly, an arm assembly coupled to the body assembly, and a material handling assembly coupled to the arm assembly. The body assembly can include a body frame, and a plurality of positioning assemblies coupleable to cables and configured to position and/or orient the body frame on the surface. The arm assembly includes a proximal end portion rotatably coupled to the body portion and a distal end portion opposite the proximal end portion. The material handling assembly is coupled to the distal end portion of the arm assembly and is configured to carry a surface material to be positioned on the angled surface.

Abstract: Devices configured to operate on an angled surface (e.g., a roof), and associated systems and methods are disclosed herein. In some embodiments, representative systems include an apparatus with a body assembly, an arm assembly coupled to the body assembly, and a material handling assembly coupled to the arm assembly. The body assembly can include a body frame, and a plurality of positioning assemblies coupleable to cables and configured to position and/or orient the body frame on the surface. The arm assembly includes a proximal end portion rotatably coupled to the body portion and a distal end portion opposite the proximal end portion. The material handling assembly is coupled to the distal end portion of the arm assembly and is configured to carry a surface material to be positioned on the angled surface.

Abstract: Devices configured to operate on an angled surface (e.g., a roof), and associated systems and methods are disclosed herein. In some embodiments, representative systems include an apparatus with a body assembly, an arm assembly coupled to the body assembly, and a material handling assembly coupled to the arm assembly. The body assembly can include a body frame, and a plurality of positioning assemblies coupleable to cables and configured to position and/or orient the body frame on the surface. The arm assembly includes a proximal end portion rotatably coupled to the body portion and a distal end portion opposite the proximal end portion. The material handling assembly is coupled to the distal end portion of the arm assembly and is configured to carry a surface material to be positioned on the angled surface.

Abstract: A respirator system includes a hood, a breathing tube, and an air purification device. The breathing tube is coupled to the hood and has an inner surface coated in an antimicrobial coating. The air purification device is coupled to the breathing tube and is further configured to deliver filtered air to the hood via the breathing tube. The air purification device includes a housing, a back pad, a filter, a fan, a power source, and a controller. The housing includes a front housing component and a rear housing component. The back pad is configured to provide a cushion between the rear housing component and the user's body. The fan is configured to pull ambient air through the filter and deliver the filtered air to the hood. The power source is configured to supply power to the fan. The controller is configured to regulate a speed of the fan.

Abstract: A track system on which a skater dolly can roll, comprising one or more pairs of rails and one or more rail clamps. Each rail clamp supports one or two pairs of rails. Rails held side-by-side are parallel to each other. Rail clamps can also secure two rails in end-to-end configuration. The distance between rails can be about 5/16 of an inch. The track system can include a skater dolly, the load-bearing wheels of which are angled 20-30 degrees away from vertical to provide clearance past the rail clamps. The skater also has stabilizing wheels that are approximately perpendicular to the load-bearing wheels, and which secure the skater to the rails when the skater is in a non-upright e.g. upside-down orientation. The system can include a motor pulley system that moves the skater along the rails.

Abstract: A vaporizer pen for heating and vaporizing a liquid product that is ingested by a user has an outer hollow tube with a proximal end and a distal end and an inner hollow tube within the outer hollow tube having a proximal end and a distal end. The inner tube defines a chamber inside. A mouthpiece abuts the proximal end of the outer hollow tube and an atomizing chamber is positioned within the outer hollow tube and abuts the distal end of the inner hollow tube. A porous stone has a proximal stone end and a distal stone end and is configured to retain the liquid product. The porous stone is positioned within the hollow inner tube and the distal stone end is in contact with the atomizing chamber. A heating element is in communication with the atomizing chamber and is constructed of a ceramic material.

Abstract: An access port for transporting fluids into a patient's body utilizing a multiple seals in parallel is disclosed. The access port 100 includes a flanged base 102, a receptacle 106 with multiple seals 108 and 110, and a cannula 104. The access port may also include a guide needle for installation purposes, and a sanitary adaptor that seals the receptacle for long term usage. Adhesives or bandaging may utilize the flanged base to secure the access port to the patient. The flanged base may also be installed beneath the patient's skin so secure the access port. The receptacle utilizes a multitude of sealing mechanism, including but not limited to O-ring seals and screw-lock seals. The receptacle additionally contains and outlet flow path leading to the cannula. The cannula connects from the receptacle into the patient's body. The cannula is installed perpendicular to the plane of the flanged base and protrudes on the side of the access port facing into the patient's body while the receptacle faces outward.

Abstract: A track system on which a skater dolly can roll, comprising one or more pairs of rails and one or more rail clamps. Each rail clamp supports one or two pairs of rails. Rails held side-by-side are parallel to each other. Rail clamps can also secure two rails in end-to-end configuration. The distance between rails can be about 5/16 of an inch. The track system can include a skater dolly, the load-bearing wheels of which are angled 20-30 degrees away from vertical to provide clearance past the rail clamps. The skater also has stabilizing wheels that are approximately perpendicular to the load-bearing wheels, and which secure the skater to the rails when the skater is in a non-upright e.g. upside-down orientation. The system can include a motor pulley system that moves the skater along the rails.

Abstract: A track system on which a skater dolly can roll, comprising one or more pairs of rails and one or more rail clamps. Each rail clamp supports one or two pairs of rails. Rails held side-by-side are parallel to each other. Rail clamps can also secure two rails in end-to-end configuration. The distance between rails can be about 5/16 of an inch. The track system can include a skater dolly, the load-bearing wheels of which are angled 20-30 degrees away from vertical to provide clearance past the rail clamps. The skater also has stabilizing wheels that are approximately perpendicular to the load-bearing wheels, and which secure the skater to the rails when the skater is in a non-upright e.g. upside-down orientation. The system can include a motor pulley system that moves the skater along the rails.

Abstract: A vaporizer pen for heating and vaporizing a liquid product that is ingested by a user has an outer hollow tube with a proximal end and a distal end and an inner hollow tube within the outer hollow tube having a proximal end and a distal end. The inner tube defines a chamber inside. A mouthpiece abuts the proximal end of the outer hollow tube and an atomizing chamber is positioned within the outer hollow tube and abuts the distal end of the inner hollow tube. A porous stone has a proximal stone end and a distal stone end and is configured to retain the liquid product. The porous stone is positioned within the hollow inner tube and the distal stone end is in contact with the atomizing chamber. A heating element is in communication with the atomizing chamber and is constructed of a ceramic material.

Abstract: A vaporizer pen for heating and vaporizing a liquid product that is ingested by a user has an outer hollow tube with a proximal end and a distal end and an inner hollow tube within the outer hollow tube having a proximal end and a distal end. The inner tube defines a chamber inside. A mouthpiece abuts the proximal end of the outer hollow tube and an atomizing chamber is positioned within the outer hollow tube and abuts the distal end of the inner hollow tube. A porous stone has a proximal stone end and a distal stone end and is configured to retain the liquid product. The porous stone is positioned within the hollow inner tube and the distal stone end is in contact with the atomizing chamber. A heating element is in communication with the atomizing chamber and is constructed of a ceramic material.

Abstract: A track system on which a skater dolly can roll, comprising one or more pairs of rails and one or more rail clamps. Each rail clamp supports one or two pairs of rails. Rails held side-by-side are parallel to each other. Rail clamps can also secure two rails in end-to-end configuration. The distance between rails can be about 5/16 of an inch. The track system can include a skater dolly, the load-bearing wheels of which are angled 20-30 degrees away from vertical to provide clearance past the rail clamps. The skater also has stabilizing wheels that are approximately perpendicular to the load-bearing wheels, and which secure the skater to the rails when the skater is in a non-upright e.g. upside-down orientation. The system can include a motor pulley system that moves the skater along the rails.

Abstract: A spring-type brake actuator for a vehicle brake such as a pneumatically-actuated brake is provided, in which the actuator's operating rod is pulled toward the actuator to apply the brake. The actuator's parking brake release piston is located closer to the brake than the service brake piston, and the parking brake power spring is positioned between the mounting end of the actuator and the parking brake piston such that when parking brake release pressure is removed from the parking brake release chamber the parking brake piston biases the operating rod in the brake application direction, drawing the operating rod further into the actuator.

Abstract: A spring-type brake actuator for a vehicle brake such as a pneumatically-actuated brake is provided, in which the actuator's operating rod is pulled toward the actuator to apply the brake. The actuator's parking brake release piston is located closer to the brake than the service brake piston, and the parking brake power spring is positioned between the mounting end of the actuator and the parking brake piston such that when parking brake release pressure is removed from the parking brake release chamber the parking brake piston biases the operating rod in the brake application direction, drawing the operating rod further into the actuator.

Abstract: One or more systems and/or techniques are provided for background task management. A background manager may receive a notification from a background task that the background task is waiting for an event, and may also receive a waitable object from the background task, where the waitable object is used by the background task to wait for the event. Responsive to the waitable object not being triggered within a period of time, the background manager may implement a power management policy for a computing device hosting the background task.

Abstract: Disclosed are compositions comprising an effective amount of a zinc containing material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.; from about 5% to about 50% of a surfactant; and from about 40% to about 95% water; wherein the pH of the composition is greater than about 7. Further disclosed are compositions comprising an effective amount of a zinc containing material having an aqueous solubility within the composition of less than about 25% by weight at 25° C.; from about 5% to about 50% of a surfactant; and from about 0.1% to about 5% of a zinc ionophoric material; from about 40% to about 95% water; and wherein the pH of the composition is greater than about 7.