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
Transmitter and receiver for streaming media including packet padding
Method for switching between virtualized and non-virtualized system operation
Method and apparatus for verifiable generation of public keys
Transferases and oxidoreductases, nucleic acids encoding them and methods for making and using them
Probiotic Bifidobacterium strains
Methods circuits apparatuses and systems for facilitating access to online content
Clock phase recovery apparatus
  Randomly Featured Patents
Backlight driver, display apparatus having the same and method of driving backlight
Image reproducing system
Catalysts preparation thereof and preparation of N-substituted acrylamides therewith
Process for making a very low COD unbleached pulp
Can-shaped computer memory device
Self-wiping/self cleaning electrical contact
Method of performing hybrid automatic repeat request (HARQ) in wireless communication system
Heating boiler
Method and arrangement for finely grinding minerals for use as fillers