Resources Contact Us Home
Current adaptive fault indicator

Image Number 5 for United States Patent #5029039.

A fault indicator which senses current in a cable, resets in response to a minimum current and arms a trip arrangement in response to current rising a predetermined amount with respect to time. If the rising current also opens a circuit breaker within a predetermined time and cuts off current to the cable, the indicator trips. If no zero current occurs within the time period, the trip arrangement is disarmed for the next current rise.

  Recently Added Patents
Solid state lighting devices and associated methods of manufacturing
Secure data exchange between data processing systems
Boring machine
Switching device and electronic apparatus using the same
Method of and apparatus for recording motion picture, which generate encoded data with higher compression efficiency using a motion vector similarity
Compositions and methods for inhibition of MMP13:MMP-substrate interactions
System and method for enhanced transaction payment
  Randomly Featured Patents
Semiconductor laser diode and integrated semiconductor optical waveguide device
Apparatus for producing a cavity in a bone
Daily desk calendar and memo pad box
Imaging catheter with integrated reference reflector
Information processing unit and method for controlling a hierarchical cache utilizing indicator bits to control content of prefetching operations
Spring rewound tagline device with spring overload preventing means
Glycolipids and analogues thereof as antigens for NKT cells
Synthetic aperture radar and target image production method
Apparatus for making connections in liquids using pressurized gas
Optical assembly having lens offset from optical axis