Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Proximity warning system with silent zones










Image Number 6 for United States Patent #8446277.

Various proximity detection zones for work sites that require personnel to be in close proximity to various hazardous elements, such as machines, mobile equipment, remotely controlled machines, and operated vehicles can be shaped to fit specific equipment or work area configurations and may include one or more silent zones within the proximity warning zone in which an alarm is not sounded. The zones are determined by overlapping magnetic fields that expand and collapse at a selected operating frequency. Devices sense and measure the strength of the magnetic fields in which they are located and use the information to determine if they are in a silent or warning zone. Thus, it is possible to produce silent zones having desired shapes.








 
 
  Recently Added Patents
Generation of interpolated samples for decision based decoding
Accessing device via communication protocol selection
Automatically selecting a paper with increased dimensions than originally desired for printing and adding advertisement content to the increased dimensional area of the paper
Method and system for automatically identifying wireless signal quality of a region
Battery-operated massager and soap dispensing wand
Catalyst composition with nanometer crystallites for slurry hydrocracking
Integrated circuit packaging system with an integral-interposer-structure and method of manufacture thereof
  Randomly Featured Patents
Processes for chemical-mechanical polishing of a semiconductor wafer
Cutting insert
Antiflocculating agent for spacers in liquid crystal displays
Graded gap inversion layer photodiode array
Light source device including a planar light source having a single, substantially continuous light emission area and display device incorporating the light source device
Friction bearing
Surgical instrument particularly for dental surgery
Lead frame connector
Retrieval label
Infrared alarm system