Patents by Inventor Wladyslas Lachor

Wladyslas Lachor has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6720892
    Abstract: An electronic keyboard, in particular one to be used in a dark environment and which therefore requires illumination of the keys. The keyboard includes a rigid printed circuit on which are soldered switches which can be actuated indirectly by the finger of the user, each switch being surmounted by an at least partially transparent key and an illumination device designed to illuminate the key from the rear of the key. A flexible printed circuit, carrying supply conductors for light-emitting diodes, is interposed between the keys and the rigid printed circuit carrying the switches. The flexible printed circuit includes a rigid part between a key and the corresponding switch, and the light-emitting diode which is to illuminate each key from the rear is soldered on the rigid part of the flexible printed circuit, between the key and the switch. The key preferably includes a cavity in which the diode will be housed. A key bears on the switch by way of the rigid part without bearing on the diode.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: April 13, 2004
    Assignee: Thomson-CSF Sextant
    Inventor: Wladyslas Lachor