Disclosed is a hydraulic energy absorbing bumper system for motor vehicles that includes a bumper with two variable stroke hydraulic buffers affixed to the ends. Both the stroke and the resistance of the buffers vary in response to the impact received by the bumper, however the resistance presented by either buffer during any given stroke is constant throughout the lengh of the stroke. Torsion hinges coupling the buffers to the bumper allow the buffers to stroke unevenly during oblique impact yet remain parallel. The bumpers are hydraulically interconnected so that the total energy absorbed during uneven stroking in response to the oblique impact is the same as the total energy absorbed during a normal impact of the same velocity. (Modified author abstract)

  • Supplemental Notes:
    • Government-owned invention available for licensing. Copy of application available NTIS.
  • Corporate Authors:

    Office of the Secretary of Transportation

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Moritz, H C
    • Schwarz, R
  • Publication Date: 1972-10-24

Media Info

  • Pagination: 25 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00047858
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: PAT-APPL-300-250 Patent App
  • Files: NTIS, USDOT
  • Created Date: Oct 18 1973 12:00AM