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
Battery cell separator
In-vehicle communication system and method of operation
Management of computer-file sharing between at least two devices
Image heating apparatus
High electron mobility transistor and manufacturing method thereof
Device for increasing chip testing efficiency and method thereof
Soybean cultivar CL1013663
  Randomly Featured Patents
Optical module and method for fabricating the same
Group of icons for a display screen
Apparatus for comparing tensile or compressive stresses imposed on different parts of optical fiber
Light detecting element and light detecting array
Method for manufacturing heat exchanger tubing
Coarse/fine adjustment of a rotary body
Optical assay technique
Adjustable safety latch with inoperable position
Process for producing bifidogenic infant and dietetic foods reduced in antigenicity
Editing HTML DOM elements in web browsers with non-visual capabilities