Results 1 - 4 of 4

• New Drill Bit Isolator Reduces Noise
  12/17/2013
  NIOSH-developed technology reduces drilling noise for coal mine roof bolting machines by 3-5 decibels. A drill bit isolator using this technology is now commercially available.
• Comparison of Passive Seat Suspension with Different Configuration of Seat Pads and Active Seat Suspension
  4/1/2008 - Conference papers
  Through modeling, this paper analyzes the performance of vehicle operators when subjected to vibration from rough road conditions, and quanttifies the energy transmission in the presence of specialized seat padding and active suspension.
• Laboratory Investigation of Seat Suspension Design Performance during Vibration Testing
  11/1/2006 - Conference papers
  Researchers performed laboratory studies on four passive and two semi-active seat suspension designs. These six seat suspension systems were tested and analyzed, for vertical vibration only, using the ISO 5007 Standard.
• Field Evaluation of Seat Designs for Underground Coal Mine Shuttle Cars
  11/1/2006 - Information Circulars
  NIOSH researchers conducted a study to gather additional data to support earlier findings that NIOSH seats, with unique viscoelastic foam padding, are improved designs for coal mine shuttle cars.