Abstract: A powder chamber, in particular for powder polishing devices, including a casing and two functional sectors, whereby the two functional sectors are arranged to be opposite to each other, and whereby at least one functional sector is designed to provide an opening for a working medium such as air or a mixture of powder and air, and whereby the two functional sectors are designed to allow the powder chamber to be locked. The two functional sectors are preferably arranged along an axis and are rotationally symmetric.

Abstract: Teeth cleaning system, in particular dental powder jet cleaning system, including a powder container having an inlet for compressed air, and where the powder container has an outlet for a powder/air mixture, and where the outlet communicates with a pipe system via which a fluid is passed, in particular a powder/air mixture which is formed in the powder container and from which powder container can be led, where a flow resistance of the inlet is configured relative to a flow resistance of the outlet and/or of the pipepipe system in such a way that a predetermined pressure loss is set across the inlet.

Abstract: Teeth cleaning system, in particular dental powder jet cleaning system, including a powder container having an inlet for compressed air, and where the powder container has an outlet for a powder/air mixture, and where the outlet communicates with a pipe system via which a fluid is passed, in particular a powder/air mixture which is formed in the powder container and from which powder container can be led, where a flow resistance of the inlet is configured relative to a flow resistance of the outlet and/or of the pipepipe system in such a way that a predetermined pressure loss is set across the inlet.

Abstract: A powder-blasting device for cleaning the surfaces of teeth via application with a powder-gas mixture, including a stationary unit having a connection region for a mixing chamber for producing the powder-gas mixture, a hand part having a nozzle device for blasting the powder-gas mixture onto a surface of a tooth, and a joining unit for joining the hand part to the stationary unit wherein the joining unit has at least one joining guide between the stationary unit and the hand part, and wherein a tube section that can be blocked via elastic deformation is arranged in a powder-gas line between the mixing chamber and the nozzle device, wherein the joining unit is detachably joined to the stationary unit and the lockable tube section is arranged in the detachable joining unit.

Abstract: A foot pedal for controlling a medical device, in particular a dental device, including a housing with a housing base, a cover element which is mounted so as to be vertically displaceable with respect to the housing base along an actuating direction and so as to be inclinable with respect to the housing base, a first switch for initiating a first functionality on the medical device and a second switch for initiating a second functionality on the medical device, and an actuating device which is vertically displaceable along the actuating direction and which actuates the first switch during a movement in the actuating direction within a first height offset section and actuates the second switch within a second height offset section, the actuating device being configured in such a way, in that it is in a first state in the first height offset section and in a second state in the second height offset section, where the foot pedal being configured such that, at a predeterminable angle of inclination of the cover e

Abstract: A foot pedal for controlling a medical device, in particular a dental device, including a housing with a housing base, a cover element which is mounted so as to be vertically displaceable with respect to the housing base along an actuating direction and so as to be inclinable with respect to the housing base, a first switch for initiating a first functionality on the medical device and a second switch for initiating a second functionality on the medical device, and an actuating device which is vertically displaceable along the actuating direction and which actuates the first switch during a movement in the actuating direction within a first height offset section and actuates the second switch within a second height offset section, the actuating device being configured in such a way, in that it is in a first state in the first height offset section and in a second state in the second height offset section, wherein the foot pedal being configured such that, at a predeterminable angle of inclination of the cover

Abstract: A powder chamber, in particular for powder polishing devices, including a casing and two functional sectors, whereby the two functional sectors are arranged to be opposite to each other, and whereby at least one functional sector is designed to provide an opening for a working medium such as air or a mixture of powder and air, and whereby the two functional sectors are designed to allow the powder chamber to be locked. The two functional sectors are preferably arranged along an axis and are rotationally symmetric.

Abstract: A powder-blasting device for cleaning the surfaces of teeth via application with a powder-gas mixture, including a stationary unit having a connection region for a mixing chamber for producing the powder-gas mixture, a hand part having a nozzle device for blasting the powder-gas mixture onto a surface of a tooth, and a joining unit for joining the hand part to the stationary unit wherein the joining unit has at least one joining guide between the stationary unit and the hand part, and wherein a tube section that can be blocked via elastic deformation is arranged in a powder-gas line between the mixing chamber and the nozzle device, wherein the joining unit is detachably joined to the stationary unit and the lockable tube section is arranged in the detachable joining unit.

Abstract: An electrical alternator system is capable of being driven by either of two prime movers and of being automatically transferred therebetween without substantial variation in the electrical output of the alternator. A planetary gear system having two mechanical drive inputs and one output is interposed between the normally used prime mover and an alternator. One mechanical input to the planetary gear system is provided with a controlled variable speed input N.sub.R from the prime mover which is controlled so as to compensate for speed variations in the other mechanically input N.sub.E from the prime mover thus maintaining the output speed N.sub.S substantially equal to a desired reference speed N.sub.O.