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










Image Number 5 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
Formation of an optical waveguide
Handheld electronic communication device having sliding display
Substrate processing apparatus and display method of substrate processing apparatus
Method and device for surface scanning of a patient
Multi-state DC-DC converter having undirectional switches
Human renal disease marker substance
Substituted thiophene pentamers
  Randomly Featured Patents
Method and device for producing an aspiration surface on an object, and electrical component obtained thereby
In vitro amplification of nucleic acid molecules via circular replicons
Static electricity dissipation system for computers
Control system prohibiting a manual shift for use in automatic transmissions
Two step maskless exposure of gate and data pads
Printed wiring board and method for manufacturing printed wiring board
Integrated circuit having raised source drains devices with reduced silicide contact resistance and methods to fabricate same
Magnetic contactor
Method and system for providing high sensitivity giant magnetoresistive sensors
Recording and reproducing apparatus and method for applying a pulse voltage and an electromagnetic wave