Abstract: A method and system of controlling a non-homogeneous cohort of ozone gas generating devices. The method comprises identifying, at a computing device, a plurality of ozone gas generating devices that constitute the non-homogeneous cohort, the plurality including at least a ceiling-mounted, an in-duct mounted and a portable ozone gas generating devices; continuously detecting, via at least one remote ozone gas sensor device located in a spatial area associated with the non-homogeneous cohort, in conjunction with one or more processors of the computing device, a concentration of ozone gas constituent within ozonated air of the spatial area; and instructing, by the one or more processors responsive to continuously detecting the concentration of the ozone gas constituent as being one of above and below a predetermined threshold concentration, at least one ozone gas generating device of the non-homogeneous cohort to increase or decrease rate of ozone gas generation associated therewith.

Abstract: A paper-based packaging film comprising a fiber-based component, a polymeric film comprising a thickness from 2 micron and 8 micron, the polymeric film coated with a barrier material comprising a metal, a metal oxide or an inorganic oxide, a layer comprising a heat sealable polymer, and an adhesive layer located between the fiber-based component and the barrier material. The polymeric film is one of oriented polyester film, oriented polylactic acid film, polyester, polylactic acid, ethylene vinyl alcohol copolymer and polyvinyl alcohol copolymer, and the total composition of the paper-based packaging film includes a fiber content greater than 80%, by weight.

Abstract: A method and system of controlling a cohort of ozone gas generating devices. The method comprises identifying, at a computing device, a plurality of ozone gas generating devices that constitute the cohort, detecting, via at least one remote ozone gas sensor device located in a spatial area associated with the cohort in conjunction with one or more processors of the computing device, a concentration of ozone gas constituent of ambient air within the spatial area, and instructing, responsive to detecting the concentration of the ozone gas constituent as being one of above and below a predetermined threshold concentration, at least one ozone gas generating device of the cohort to perform one of increasing and decreasing a rate of ozone gas generation associated therewith.

Abstract: A method and system of generating ozone gas. The method comprises receiving a stream of ambient air that includes at least oxygen gas, generating ozone gas based upon applying ultraviolet (UV) irradiation provided in accordance with a wavelength of 185 nanometer (nm) to at least a portion of the oxygen gas, the UV irradiation provided via an optical lamp module powered by a direct current (DC) voltage battery source, producing a modified air stream in accordance with the generating, and exhausting the modified air stream, the modified air stream having a higher concentration of ozone gas as compared with a trace concentration of ozone gas that is constituted in the stream of ambient air.

Abstract: A method and system of monitoring viral safety status associated with entry into a facility. The method comprises receiving, at a display user interface rendered at a mobile computing device, a selection of indicia representative of the facility, receiving, responsive to the selection, an ozone gas viral cleaning status of the facility, determining, based on the ozone gas viral cleaning status and at least one threshold entrant condition in association with an entrant category, a suitability for entrance into the facility and generating, at the display user interface, a notification in accordance with the suitability for entrance.

Abstract: A vacuum pump is provided that includes rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing.

Abstract: A vacuum pump comprises rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing.

Abstract: A food processing and/or packaging device comprises at least one food chamber. Via a conduit system, the at least one food chamber is connected to a vacuum pump for generating vacuum in the at least one food chamber. For sterilizing the conduit system and/or the food chamber, a sterilization device is provided. The sterilization device comprises e.g. spray nozzles for introducing cleaning liquid into the conduit system. The cleaning liquid is separated by a liquid separator arranged upstream of the vacuum pump in flow direction.

Abstract: A dry vacuum pump, comprising a pump housing, which forms a plurality of suction chambers, wherein rotor elements are arranged in the suction chambers, in order to convey a pump medium from a high-vacuum-side inlet to an outlet. At least one rotor element is arranged in each suction chamber. The rotor elements are connected to a rotor shaft. The rotor shaft is supported by bearings, wherein a high-vacuum-side bearing is arranged in a cut-out. A sealing device is arranged between the high-vacuum-side bearing and at least one suction chamber adjacent to the high-vacuum-side bearing. The cut-out is connected, by means of a first channel, to a region of the dry vacuum pump in which there is a higher pressure than in at least one suction chamber adjacent to the high-vacuum-side bearing.

Abstract: A vacuum pump comprises rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing.

Abstract: A dry vacuum pump, comprising a pump housing, which forms a plurality of suction chambers, wherein rotor elements are arranged in the suction chambers, in order to convey a pump medium from a high-vacuum-side inlet to an outlet. At least one rotor element is arranged in each suction chamber. The rotor elements are connected to a rotor shaft. The rotor shaft is supported by bearings, wherein a high-vacuum-side bearing is arranged in a cut-out. A sealing device is arranged between the high-vacuum-side bearing and at least one suction chamber adjacent to the high-vacuum-side bearing. The cut-out is connected, by means of a first channel, to a region of the dry vacuum pump in which there is a higher pressure than in at least one suction chamber adjacent to the high-vacuum-side bearing.

Abstract: A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.

Abstract: In order to provide a simple and energy-efficient rough pumping method for a displacement pump (10), intended to generate a maximum differential pressure (?Pmax) between the inlet (18) and the outlet (20) of the displacement pump (10), the rotational speed (?) of the displacement pump (10) is adjusted such that the maximum differential pressure (?Pmax) to be generated that the power input (3, 4) of the displacement pump (10) approximates the minimum power (2) physically required for compressing the gas in order to establish the maximum differential pressure (?Pmax).

Abstract: This invention relates to navigation in a three dimensional environment using an orientation of a mobile device. In an embodiment, a computer-implemented method navigates a virtual camera in a three dimensional environment on a mobile device. The method includes: receiving orientation information of the mobile device; and orienting the virtual camera in the three dimensional environment according to the orientation information.

Abstract: A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.

Abstract: Methods and systems for automatically adjusting a three-dimensional navigation system are provided. A method for automatically adjusting a display viewpoint for a three-dimensional navigation system may include receiving a velocity of a vehicle and a look-ahead distance between the vehicle and a look-ahead point, determining a range distance between the vehicle and the display viewpoint, determining the first position of the display viewpoint, displaying a three-dimensional view of a navigation route for the vehicle from the first position, receiving a change in the look-ahead distance, determining a new range distance, determining a second position of the display viewpoint, and automatically moving the position of the display viewpoint to the second position on a curvilinear swoop path located above and behind the vehicle. A corresponding system may include a navigation information collector, a range determiner and a display viewpoint adjuster.

Abstract: A screw vacuum pump, in particular for compression against atmospheric pressure, comprises a pump housing defining a suction chamber. Two meshing screw rotors are arranged in the suction chamber. Further, an overpressure outlet provided, which comprises an overpressure opening in a side wall of the suction chamber. Further, an overpressure valve is arranged in the overpressure outlet. The width (b) of the overpressure opening in the longitudinal direction of the screw rotors is smaller than or equal to a tooth width (B) of the screw rotors.

Abstract: In order to provide a simple and energy-efficient rough pumping method for a displacement pump (10), intended to generate a maximum differential pressure (?Pmax) between the inlet (18) and the outlet (20) of the displacement pump (10), the rotational speed (?) of the displacement pump (10) is adjusted such that the maximum differential pressure (?Pmax) to be generated that the power input (3, 4) of the displacement pump (10) approximates the minimum power (2) physically required for compressing the gas in order to establish the maximum differential pressure (?Pmax).

Abstract: A screw vacuum pump, in particular for compression against atmospheric pressure, comprises a pump housing defining a suction chamber. Two meshing screw rotors are arranged in the suction chamber. Further, an overpressure outlet provided, which comprises an overpressure opening in a side wall of the suction chamber. Further, an overpressure valve is arranged in the overpressure outlet. The width (b) of the overpressure opening in the longitudinal direction of the screw rotors is smaller than or equal to a tooth width (B) of the screw rotors.

Abstract: This invention relates to anchored navigation in a three dimensional environment on a mobile device. In an embodiment, a computer-implemented method navigates a virtual camera in a three dimensional environment on a mobile device having a touch screen. A first user input is received indicating that a first object is approximately stationary on a touch screen of the mobile device. A second user input is received indicating that a second object has moved on the touch screen. An orientation of the virtual camera of the virtual camera is changed according to the second user input.