Abstract: Device for vehicles, in particular fork-lift trucks, the device being designed at least for carrying out a steering movement of the vehicle, the device being arranged on an arm rest of a vehicle seat of the vehicle, wherein the device is at least partially rotatable about a first pivot axis relative to the arm rest, wherein rotation of the device about the first pivot axis causes the steering movement of the vehicle, and wherein the device comprises a first device element arranged above the arm rest, and a second device element which is fixedly connected to the first device element and extends downwards from the first device element beyond the first device element.

Abstract: Device for vehicles, in particular fork-lift trucks, the device being designed at least for carrying out a steering movement of the vehicle, the device being arranged on an arm rest of a vehicle seat of the vehicle, wherein an actuation of the device causes the steering movement, and wherein the device has a first device element arranged above the arm rest, and a second device element fixedly connected to the first device element and extending downwardly from the first device element beyond the first device element, wherein the first device element and the second device element are intended and designed for a hand to be at least partially placed thereon, wherein during a forward movement of the vehicle the hand can be at least partially placed on the first device element and during a rearward movement of the vehicle the hand can be at least partially placed on the second device element.

Abstract: The invention relates to a steering device for vehicles, in particular forklifts, for carrying out a steering movement of the drivable vehicle on a surface by manual operation by a vehicle driver, wherein the steering device is attached to or in an armrest of a vehicle seat, wherein the steering device comprises at least one rotatable wheel element which can be at least partially grasped on the circumference by the fingers of a hand of the vehicle driver placed on the steering device and can be rotated about an axis of rotation for a steering movement.

Abstract: Various embodiments include systems and apparatuses for reducing contamination levels within optical chambers of particle-detection instruments. In one embodiment, an apparatus to reduce contamination within an optical chamber of a particle-detection instrument is described. The apparatus includes a plenum chamber to at least partially surround an aerosol-focusing nozzle of the particle-detection instrument and accept a filtered gas flow. A curtain-flow concentrating nozzle is coupled to the plenum chamber to produce a curtain flow into the optical chamber to substantially surround an aerosol flow. Other methods and systems are disclosed.

Abstract: Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream in a recirculating type of aerosol diluter system. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A primary diluter device includes a first inlet to receive the aerosol stream and a second inlet to receive a filtered portion of the aerosol stream and combining the filtered portion with an additional sampled aerosol stream. A flow diverter device splits at least the sampled aerosol stream into a first portion of the sampled aerosol stream and a remaining portion of the sampled aerosol stream. A filter receives the remaining portion of the sampled aerosol stream and provides a filtered aerosol stream to the second inlet of the primary diluter device. Other methods and apparatuses are disclosed.

Abstract: Various embodiments include systems and apparatuses for reducing contamination levels within optical chambers of particle-detection instruments. In one embodiment, an apparatus to reduce contamination within an optical chamber of a particle-detection instrument is described. The apparatus includes a plenum chamber to at least partially surround an aerosol-focusing nozzle of the particle-detection instrument and accept a filtered gas flow. A curtain-flow concentrating nozzle is coupled to the plenum chamber to produce a curtain flow into the optical chamber to substantially surround an aerosol flow. Other methods and systems are disclosed.

Abstract: A vehicle seat having a seat operating device, wherein the seat operating device has a touch screen for displaying control panels for setting a value of an operating parameter assigned to the respective control panel and for detecting user input, wherein one can toggle between control panels via at least one first user input, wherein the control panels are arranged in a fixed order, wherein each a individual control panel is displayed by the touch screen and the value of the operating parameter can be changed by at least a second user input in the control panel.

Abstract: A vehicle seat having a seat operating device, wherein the seat operating device has a touch screen for displaying control panels for setting a value of an operating parameter assigned to the respective control panel and for detecting user input, wherein one can toggle between control panels via at least one first user input, wherein the control panels are arranged in a fixed order, wherein each a individual control panel is displayed by the touch screen and the value of the operating parameter can be changed by at least a second user input in the control panel.

Abstract: The invention relates to a seat, in particular a vehicle seat, with an operating device for setting seat parameters, wherein the operating device comprises at least one multifunction operating element having at least one selection element, by means of which at least two operating levels can be selected, wherein the multifunction operating element is movable in at least five switching directions, wherein each switching direction can be assigned to a specific function which is associated with the selected operating level and changes a seat parameter.

Abstract: The invention relates to a steering device for vehicles, in particular forklifts, for carrying out a steering movement of the drivable vehicle on a surface by manual operation by a vehicle driver, wherein the steering device is attached to or in an armrest of a vehicle seat, wherein the steering device comprises at least one rotatable wheel element which can be at least partially grasped on the circumference by the fingers of a hand of the vehicle driver placed on the steering device and can be rotated about an axis of rotation for a steering movement.

Abstract: Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream in a recirculating type of aerosol diluter system. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A primary diluter device includes a first inlet to receive the aerosol stream and a second inlet to receive a filtered portion of the aerosol stream and combining the filtered portion with an additional sampled aerosol stream. A flow diverter device splits at least the sampled aerosol stream into a first portion of the sampled aerosol stream and a remaining portion of the sampled aerosol stream. A filter receives the remaining portion of the sampled aerosol stream and provides a filtered aerosol stream to the second inlet of the primary diluter device. Other methods and apparatuses are disclosed.

Abstract: Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A filter is coupled in fluid communication with and in parallel with a flow-monitoring device to receive the sampled aerosol stream from the aerosol sample inlet. The flow-monitoring device is configured to allow for a passage of particles contained in the sampled aerosol stream. A pressure sensor and a temperature sensor monitor the filter and the flow-monitoring device. An output from the filter and the flow-monitoring device may be directed to particle measurement or particle sizing instrumentation. An actual dilution ratio of the output sent to the particle measurement or particle sizing instrumentation is determined based on a nominal flowrate of the flow-monitoring device and thermodynamic properties of a gas comprising the aerosol stream. Other methods and apparatuses are disclosed.

Abstract: The invention relates to a seat occupancy recognition device for recognising the occupancy of a seat, characterised by at least one volume detection device with at least one first sensor which is provided and designed to detect a volume on the vehicle seat, and at least one body function detection device with at least one second sensor, which is provided and designed to detect body functions, and at least one body function recognition device for recognising the detected body functions.

Abstract: A vehicle seat having a seat operating device, wherein the seat operating device has a touch screen for displaying control panels for setting a value of an operating parameter assigned to the respective control panel and for detecting user input, wherein one can toggle between control panels via at least one first user input, wherein the control panels are arranged in a fixed order, wherein each a individual control panel is displayed by the touch screen and the value of the operating parameter can be changed by at least a second user input in the control panel.

Abstract: The invention relates to a seat, in particular a vehicle seat, with an operating device for setting seat parameters, wherein the operating device comprises at least one multifunction operating element having at least one selection element, by means of which at least two operating levels can be selected, wherein the multifunction operating element is movable in at least five switching directions, wherein each switching direction can be assigned to a specific function which is associated with the selected operating level and changes a seat parameter.

Abstract: The invention relates to an adjustable damping system for a vehicle seat for damping vibrations of a seat-part-side upper part relative to a body-side lower part in at least one spatial direction (X, Y, Z), at least one damping element, arranged between the seat-part-side upper part and the body-side lower part and adjustable by an adjustment device, being provided for the damping. The damping system is further distinguished in that at least one relative movement variable and a change in the relative movement variable of the seat-part-side upper part relative to the body-side lower part can be determined by a sensor device, and a first damping force of the damping element can be adjusted by the adjustment device as a function of the at least one relative movement variable and the frequency of the change in the relative movement variable.

Abstract: Various embodiments include methods and systems to dilute a sampled particle-laden aerosol stream. In one embodiment, a system to dilute a sampled aerosol stream includes an aerosol sample inlet. A filter is coupled in fluid communication with and in parallel with a flow-monitoring device to receive the sampled aerosol stream from the aerosol sample inlet. The flow-monitoring device is configured to allow for a passage of particles contained in the sampled aerosol stream. A pressure sensor and a temperature sensor monitor the filter and the flow-monitoring device. An output from the filter and the flow-monitoring device may be directed to particle measurement or particle sizing instrumentation. An actual dilution ratio of the output sent to the particle measurement or particle sizing instrumentation is determined based on a nominal flowrate of the flow-monitoring device and thermodynamic properties of a gas comprising the aerosol stream. Other methods and apparatuses are disclosed.

Abstract: The invention relates to a seat occupancy recognition device for recognising the occupancy of a seat, characterised by at least one volume detection device with at least one first sensor, which is provided and designed to detect a volume on the vehicle seat, and at least one body function detection device with at least one second sensor, which is provided and designed to detect body functions, and at least one body function recognition device for recognising the detected body functions.

Abstract: The invention relates to a seat occupancy recognition device for recognising the occupancy of a seat, characterised by at least one volume detection device with at least one first sensor, which is provided and designed to detect a volume on the vehicle seat, and at least one body function detection device with at least one second sensor, which is provided and designed to detect body functions, wherein the first sensor comprises a detection area, the maximum being in a range over and/or in front of the seat.

Abstract: The invention relates to an adjustable damping system for a vehicle seat for damping a movement of the seat part-side upper part relative to the body-side lower part in at least one spatial direction, wherein, for damping, at least one damping element is provided, which is adjustable by an adjustment device and is arranged between the seat part-side upper part and the body-side lower part.