ELECTROMAGNET DOOR BRAKE Russian patent published in 2008 - IPC E05F5/06 

FIELD: construction.

SUBSTANCE: application of invention makes it possible to eliminate mechanical friction in system of quiet closing of door and to avoid periodic maintenance. In door and door aperture electromagnet door brake is installed, which consists of magnet rod and braking element. The latter contains solenoid and he following components serially connected to it - instrument with single-sided conductivity of electric current and electric load with diode. Whenever door is closed, magnetic rod is displaced inside solenoid, creating electric current in it, which generates magnetic field inside solenoid, and this field prevents displacement of rod inside solenoid. Produced electric energy is scattered in the load. Therefore, kinetic energy of door is transformed into electric energy and then to thermal one. Diode connected to electric circuit provides for magnetic field creation in solenoid only whenever door is being closed and provides easy door opening.

EFFECT: provision of magnet field creation in solenoid only during door closing and possibility of easy door opening.

13 cl, 1 dwg