Abstract: A power electronics assembly for an electric motor controller is disclosed having a first circuit board, a second circuit board spaced from the first circuit board by a stand-off distance, an electrically insulating housing held between the first circuit board and the second circuit board, multiple conductors, and a restraint adapted to hold the electrically insulating housing to the first circuit. The electrically insulating housing includes multiple channels. Each of the multiple conductors are arranged to provide a conduction path through a corresponding channel and are each trapped between the electrically insulating housing and the first circuit board and biased into electrical contact with an electrical conductor of the first circuit board.

Abstract: A power electronics assembly for an electric motor controller is disclosed having a first circuit board, a second circuit board spaced from the first circuit board by a stand-off distance, an electrically insulating housing held between the first circuit board and the second circuit board, multiple conductors, and a restraint adapted to hold the electrically insulating housing to the first circuit. The electrically insulating housing includes multiple channels. Each of the multiple conductors are arranged to provide a conduction path through a corresponding channel and are each trapped between the electrically insulating housing and the first circuit board and biased into electrical contact with an electrical conductor of the first circuit board.

Abstract: An electric motor controller having a front face and a rear face, the front face carrying a plurality of AC output couplings and the controller carrying a converter configured to convert a received DC supply into an output AC supply for controlling an electric motor, the AC output couplings being disposed symmetrically about an axis of symmetry of the controller on the front face of the controller. Also described is an apparatus comprising: a DC series motor; and a first current supply configured to supply a first current to an armature of the DC series motor; a second current supply configured to supply a second current to a field winding of the DC series motor; and a controller configured to control the first current supply to supply the first current based on a required torque output for the motor, and to control the second current supply to supply the second current based on the first current.

Abstract: An electric motor controller having a front face and a rear face, the front face carrying a plurality of AC output couplings and the controller carrying a converter configured to convert a received DC supply into an output AC supply for controlling an electric motor, the AC output couplings being disposed symmetrically about an axis of symmetry of the controller on the front face of the controller. Also described is an apparatus comprising: a DC series motor; and a first current supply configured to supply a first current to an armature of the DC series motor; a second current supply configured to supply a second current to a field winding of the DC series motor; and a controller configured to control the first current supply to supply the first current based on a required torque output for the motor, and to control the second current supply to supply the second current based on the first current.

Abstract: An electric motor controller having a front face and a rear face, the front face carrying a plurality of AC output couplings and the controller carrying a converter configured to convert a received DC supply into an output AC supply for controlling an electric motor, the AC output couplings being disposed symmetrically about an axis of symmetry of the controller on the front face of the controller. Also described is an apparatus comprising: a DC series motor; and a first current supply configured to supply a first current to an armature of the DC series motor; a second current supply configured to supply a second current to a field winding of the DC series motor; and a controller configured to control the first current supply to supply the first current based on a required torque output for the motor, and to control the second current supply to supply the second current based on the first current.

Abstract: A thermally-insulated reservoir 9 for a dispenser in which liquid is supplied from a bottle to a discharge outlet via a reservoir, has an inner wall 23 and an outer wall 24 defining a sealed and evacuated heat-insulating cavity 30 at least partially surrounding a liquid space 22. In one application of the invention the reservoir takes the form of a cooling vessel with the thermal means provided by a cooling coil 26. The invention may also be applied to reservoirs which form a hot tank with the thermal means provided by an electrical heating element.

Abstract: A thermally-insulated reservoir 9 for a dispenser in which liquid is supplied from a bottle to a discharge outlet via a reservoir, has an inner wall 23 and an outer wall 24 defining a sealed and evacuated heat-insulating cavity 30 at least partially surrounding a liquid space 22. In one application of the invention the reservoir takes the form of a cooling vessel with the thermal means provided by a cooling coil 26. The invention may also be applied to reservoirs which form a hot tank with the thermal means provided by an electrical heating element.

Abstract: Water supplied from a bottle 1 is pre-chilled in a reservoir 3. A two-part water pump 11 transfers water under pressure through a jet nozzle 14 into an oxygen space 17 in a PET pressure vessel 12, which entrains oxygen into the water. The pressure vessel is received in a conductive holder 18 and is cooled by a peltier element 19 provided with cooling fins 20. The holder 18 forms a capacitive level sensor with a probe 32 inside the vessel, which starts the pump 11 when oxygenated water is drawn off via a draw tube 28 and discharge valve 31. When the water level in the oxygenating vessel is restored a solenoid valve 25 opens to restore the oxygen pressure in the vessel. For hygiene purposes the pumping body can be removed from the pump motor and replaced together with the reservoir 3 and oxygenating vessel 12 along with the associated tubing.

Abstract: Water supplied from a bottle 1 is pre-chilled in a reservoir 3. A two-part water pump 11 transfers water under pressure through a jet nozzle 14 into an oxygen space 17 in a PET pressure vessel 12, which entrains oxygen into the water. The pressure vessel is received in a conductive holder 18 and is cooled by a peltier element 19 provided with cooling fins 20. The holder 18 forms a capacitive level sensor with a probe 32 inside the vessel, which starts the pump 11 when oxygenated water is drawn off via a draw tube 28 and discharge valve 31. When the water level in the oxygenating vessel is restored a solenoid valve 25 opens to restore the oxygen pressure in the vessel. For hygiene purposes the pumping body can be removed from the pump motor and replaced together with the reservoir 3 and oxygenating vessel 12 along with the associated tubing.