Patents Assigned to Teknowara Oy
  • Patent number: 6717367
    Abstract: An emergency lighting arrangement and an emergency lighting apparatus, the arrangement being configured to be coupled to a supply network and the arrangement comprising an electronic ballast for igniting and burning a fluorescent lamp, the emergency lighting apparatus comprising a battery (Batt), recharge device (3) for recharging the battery from the supply network, a supply device (4) for supplying the battery voltage further, and a control unit (B), which is configured to control the devices of the emergency lighting apparatus. The electronic ballast of the emergency lighting system is a controllably dimmable ballast, and the emergency lighting apparatus further comprises a dimming control unit (C) for controlling the dimming of the electronic ballast.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: April 6, 2004
    Assignee: Teknowara Oy
    Inventor: Jari Tabell