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
Liquid dispensing apparatus
Tool box
Optoelectronic semiconductor chip comprising a reflective layer
Buck converter having reduced ripple under a light load
Semiconductor unit having a power semiconductor and semiconductor apparatus using the same
Discharge lamp lighting circuit
Frame timing synchronization in a geostationary satellite system
  Randomly Featured Patents
Display device with specific electrode structure and composition
Kernel-mode audio processing modules
Process for producing m-phenoxybenzyl alcohol
Multiple function image formation device and method including master and sub-service functions
Composition for use in flexible polyurethane foams
Availability measurement in networks
Tool holder assembly
Fuse puller
Compact foldable handgun
Advance notification system and method utilizing vehicle progress report generator