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
Hardware/software debugging using memory access parameters
Microfluidic system incorporating a metal impregnated nanoporous material in a microfluidic pathway thereof
Integrated wire carrier for electrode array
Cache memory control device, semiconductor integrated circuit, and cache memory control method
Re-establishing push notification channels via user identifiers
DMAPN having a low DGN content and a process for preparing DMAPA having a low DGN content
Vacuum cleaner
  Randomly Featured Patents
Combined memories in integrated circuits
Epoxy group-containing silicone resin and compositions based thereon
Microfabricated structures for facilitating fluid introduction into microfluidic devices
Sewing machine
Process for producing organoalkoxysilanes from organic acids or cyanates and haloalkylalkoxysilanes
Memory module
System for predicting erasure of test patches in a printing apparatus
Engine cylinder head with augmented air or air/fuel mixture flow and method
Method of fishing using a slip-ring fishing device
Beverage compositions having low levels of preservative with enhanced microbial stability