Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Conductor pair identifier apparatus










Image Number 2 for United States Patent #4458113.

Improved telephone cable conductor pair identifier apparatus incorporates an "Expander" which is interposed at an appropriate location in the amplifier and filtering circuitry between the pick up probe and the audio signal emitter, or speaker. The "Expander" acts to accentuate the differences in the amplitudes of signals present, thereby significantly enhancing the effective sensitivity of a human operator to signal amplitude differences, with a resulting remarkable improvement in the ability of the human operator to readily and accurately locate and select a telephone cable conductor being sought. Switch means may be provided to permit the "Expander" to be bypassed at the will of the human operator, since it may be desirable to use the "Expander" only in the more difficult cases of conductor pair identification.








 
 
  Recently Added Patents
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
Integrated control system for stability control of yaw, roll and lateral motion of a driving vehicle using an integrated sensing system to determine longitudinal velocity
Illumination apparatus for microlithography projection system including polarization-modulating optical element
Quantifying the risks of applications for mobile devices
Semiconductor device and manufacturing method thereof
Analog to digital converter with increased sub-range resolution
Method and apparatus for supporting HARQ
  Randomly Featured Patents
Wire cooling system for use in a wire drawing machine
System and method of keyboard configuration for disabled user access
Pay-per-play audiovisual system with touch screen interface
Drilling apparatus with reduced exposure of cutters and methods of drilling
Esterification process using a catalyst consisting of sand, stannous tin and aluminate
Antigen for early pregnancy test and contraceptive vaccine
Concrete form shuttering
Rod making machine with means for adjusting the position of wrapping material
Image display apparatus utilizing electrophoresis
Interactive voice recognition method and apparatus using affirmative/negative content discrimination