Resources Contact Us Home
Electromechanical device with variable resistance circuit for controlling a load, particularly of an electric motor

Image Number 4 for United States Patent #5867002.

The invention concerns an electromechanical device with variable resistance circuit serving to control a load. The device comprises a connection (10) for a source of power (12), a connection (14) apt to be connected to a load (16) supplied by the source of power (12), a resistance circuit formed by a plurality of branches (B.sub.1, B.sub.2, . . . B.sub.n) mounted in parallel between the connections (10, 14) and each comprising a resistance (R.sub.1, R.sub.2 . . . R.sub.n) in series with a switch (I.sub.1, I.sub.2, . . . I.sub.n) possessing an initial contact state and mechanical means comprising a carriage (20) moveable in translation between several predetermined positions, in each of which this carriage (20) is apt to co-operate with at least one of the switches (I.sub.1, I.sub.2, . . . I.sub.n) in order to modify its initial contact state and vary the intensity of the current traversing the load. Application particularly to the speed control of a fan motor in a heating-ventilation and/or air-conditioning installation of a motor vehicle.

  Recently Added Patents
Wireless subscriber managing storage of HARQ packets
Medical injector
Control apparatus for autonomous operating vehicle
Multi-domain dynamic group virtual private networks
Contactless electrical connector for an induction sensor, and sensor including such a connector
Radiation-emitting semiconductor chip and method for producing a radiation-emitting semiconductor chip
  Randomly Featured Patents
System for increasing programming speed for non-volatile memory by applying counter-transitioning waveforms to word lines
Hand tool safety device
Modified copolyesters and improved multilayer reflective films
Method and system for series fault protection
Method and apparatus for injection blow molding an article with improved detail definition
Gypsum fertilizer products with polymer adjuvants
Reversing and preventing warpage in stringed musical instruments
Turbulent flow cold-wall reactor
Watercraft exhaust system
Photovoltaic module with multi-layer fluoropolymeric film