Resources Contact Us Home
Down lighting systems and fixtures therefor

Image Number 2 for United States Patent #5003432.

A down lighting system for elevator cabs and the like includes halogen lights in standard and emergency light fixtures. Both types of fixtures are connected to the ceiling by a clamp arrangement which is universally adaptable to a wide variety of ceiling types without changing the light housing dimensions. The clamp arrangement fastens light housings against rotation with respect to the ceiling and it is adjustable to different height ceiling configurations merely by connection to different vertical positions of the outer surface of the fixture. The standard fixture includes a halogen bulb with its own reflector. The emergency lighting fixture includes a halogen bulb/reflector unit with the emergency self focusing bulbs concentrically spaced around it. Both light sources pass focused light directly into the space below the ceiling for meeting test point candle power requirements. The emergency lighting circuit includes a switching relay with a manually operated button for testing the emergency light source by pulling the button to override a relay armature.

  Recently Added Patents
Online data conversion technique using a sliding window
Image correction method
Optical fixing device and image forming apparatus
Electronic system and method for compensating the dimensional accuracy of a 4-axis CNC machining system using global and local offsets
Devices including composite thermal capacitors
Method and apparatus for management and analysis of services in VoIP networks
Semiconductor process
  Randomly Featured Patents
Nozzle device and fuel injection valve having the same
Composite prosthesis for preventing post-surgical adhesions
System and method for discovering schematic structure in hypertext documents
Cartographic display of content through dynamic, interactive user interface elements
Methods and systems for recycling carpet and carpets manufactured from recycled material
Seat reclining apparatus for automotive vehicle
Rotating biological contactor apparatus and method
Infrared tag and track technique
Method of franking as a function of mail category
Degradation control of environmentally degradable disposable materials