Abstract: A device for controlling a door, the device having: a body; an electromagnet arranged to generate a magnetic field for retaining the door; a coupling that couples the electromagnet to the body, the coupling being arranged to allow a movement of the electromagnet relative to the body; and a current supply that is arranged to supply the electromagnet with a current. The current supply is arranged to detect the movement of the electromagnetic and to cease supplying the current at a predetermined instant after detecting the movement of the electromagnet.

Abstract: A telescopic kettle contains a body; a fitting member secured on a bottom section of the body and includes at lease one hollow first tube and at lease one hollow second tube, both of which are axially connected together, and includes a first slot having a first folding segment; a smallest inner diameter of the first tube is larger than a largest outer diameter of the second tube; an outer connecting portion of the first tube and the second tube includes a second slot, and an inner connecting portion of the first tube and the second tube includes a second folding segment; the first tube includes a third slot formed on an inner wall thereof and a third folding segment disposed on an outer wall thereof; the base extending from a bottom end of the fitting member; a covering member including an opening, an outlet, and includes a push button.

Abstract: An electromagnetic door lock is described which includes at least two external generally planar surfaces and light emitting means; the light emitting means indicates the status of the lock and is arranged to emit light from the at least two external surfaces.

Abstract: A device for controlling a door, the device having: a body; an electromagnet arranged to generate a magnetic field for retaining the door; a coupling that couples the electromagnet to the body, the coupling being arranged to allow a movement of the electromagnet relative to the body; and a current supply that is arranged to supply the electromagnet with a current. The current supply is arranged to detect the movement of the electromagnetic and to cease supplying the current at a predetermined instant after detecting the movement of the electromagnet.