Abstract:
Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.
Abstract:
A surgical lamp that includes a lamp body having a central axis, and a suspension system for connecting the lamp body with a carrying system. The suspension system can include a first pivot joint around a first pivot axis that is perpendicular to the central axis, and the first pivot joint can be located in the central region of the lamp body.
Abstract:
A handheld work apparatus has an internal combustion engine (9, 9′, 9″) and a starter device (8). The internal combustion engine has a piston (10, 10″) which has at least one piston ring (37, 38). In order to avoid a delay when starting the engine, at least one recess is provided in the cylinder bore (26) which bridges the at least one piston ring (37, 38) in at least one position of the piston (10, 10′) and which has a distance (n, o, p) to all function openings of the engine (9, 9′, 9″) configured in the cylinder bore (26). To reduce the compression in the combustion chamber (25), the piston (10′) has only one piston ring (37) or two piston rings (37, 38) are provided having respective piston ring gaps (39, 40) defining an angle (β) which is up to approximately 45°.
Abstract:
A body care appliance is disclosed. The body care appliance includes a toothbrush having a first display; a base station for storing and/or charging the toothbrush; and a second display for displaying interactive representations, which are interactively controllable by means of a control unit from the toothbrush. The second display forms a module that is designed separately from the base station and the toothbrush and is separately positionable; the second display having a communication interface for communication with the base station and/or with the toothbrush.
Abstract:
A furnace system has a furnace, particularly an arc furnace, for melting metal, and a cleaning device for removing and/or avoiding bulk goods from or in a furnace opening. The cleaning device has a movable thrust arm for carrying out a thrust movement, and a movement device for moving the thrust arm between a parking level and an operating level. The use of a furnace opening is further made more flexible in that a work platform forming a work level is present, from which the furnace opening is accessible and which carries the cleaning device. The work level has a recess through which the thrust arm can be guided during the movement thereof between the operating level positioning above the work level, and the parking level positioned below the working level.
Abstract:
An oil-injected compressor, with an oil circuit for lubrication, and an oil separating device which is used to separate the oil from the compressed air. A self-resetting temperature switch, which is used to switch off the compressor unit when the maximum temperature limit of the incoming compressed air is reached, is provided in the region of the inlet of the compressed air, which contains oil, in the oil separating device. At least one non-self-resetting additional temperature switch is provided in the internal area of the oil separating device, which immediately switches off the compressor unit following a fire or an explosion of the compressed air, which contains oil, and which is contained in the oil separating device.
Abstract:
A method for determining an initial float angle for skid detection in rollover sensing of a rollover of a vehicle having at least one sensor system for vehicle-dynamic signals and a control unit for activating a restraining device, which divides the driving state of the vehicle into chronologically consecutive state phases, having the following method steps carried out continuously in the first state phase: calculating a change in the float angle from the vehicle-dynamic signals; comparing the calculated change in the float angle with a predefinable threshold value; and determining the initial float angle on the basis of the calculated change in the float angle as a function of the threshold value for a first range of small changes in the float angle or for a second range of larger values of changes in the float angle and a device therefor.
Abstract:
A brush head for an electric toothbrush is disclosed. The brush head includes a plate-shaped bristle support including mounting means for the movable mounting of the bristle support, the bristle support carrying at least two outer bristle tufts and at least two inner bristle tufts, the outer bristle tufts having a greater height than the inner bristle tufts, such that in the working surface defined by the free ends of the tufts there is formed a central depression which has a groove-shaped concave bottom curved in one direction and extending substantially straight in the direction vertical thereto. At least one of the outer bristle tufts has a chamfer on its outer lying edge of its free end close to the circumferential side of the bristle support.
Abstract:
A brush head for an electric toothbrush is disclosed. The brush head includes a substantially plate-shaped bristle support carrying a bristle field, the bristle field having a main axis extending substantially perpendicularly to the bristle support and including a plurality of bristles defining with their free ends a flat or concave working surface to be put onto the teeth to be cleaned; driving and/or transmitting means for driving the bristle support using a reciprocating poking motion along a poking axis and an oscillatory rotational motion about an axis of rotation; and connecting means for connecting the bristle support with a toothbrush handpiece such that a brush head longitudinal axis extends substantially parallel to a toothbrush handpiece longitudinal axis in connected condition. The bristle field with its bristle field main axis is arranged at a tilt relative to the brush head longitudinal axis such that the bristle field main axis is inclined at an acute angle of inclination (Φ) to a perpendicular upon the brush head longitudinal axis, and wherein a working surface is inclined in opposite direction to the tilt of the bristle field main axis such that a plane lying onto the working surface is sloped at an acute angle to a plane perpendicular to the bristle field main axis.
Abstract:
A furnace system has a furnace, particularly an arc furnace, for melting metal, and a cleaning device for removing and/or avoiding bulk goods from or in a furnace opening. The cleaning device has a movable thrust arm for carrying out a thrust movement, and a movement device for moving the thrust arm between a parking level and an operating level. The use of a furnace opening is further made more flexible in that a work platform forming a work level is present, from which the furnace opening is accessible and which carries the cleaning device. The work level has a recess through which the thrust arm can be guided during the movement thereof between the operating level positioning above the work level, and the parking level positioned below the working level.