×

Air bag jack

  • US 4,560,145 A
  • Filed: 07/21/1980
  • Issued: 12/24/1985
  • Est. Priority Date: 04/09/1979
  • Status: Expired due to Term
First Claim
Patent Images

1. An air bag jack comprising:

  • an inflatable member made from a flexible, elastomeric material and having a wall with a substantially uniform thickness and having a top section, and a plurality of lower sections, all of the sections being integral with each other to form an airtight enclosure, the sections being nestable into the next lower section and each having a maximum base diameter smaller than the maximum base diameter of the section immediately below, the sections being joined to the next lower section by a neck portion;

    a plurality of expandable elastic rings, each ring surrounding the neck portion of the flexible member between two adjacent sections and being of smaller diameter than the maximum base diameter of both of such two adjacent sections, said elastic rings expanding a controlled amount as the inflatable member is inflated for use to control elastic deformation of the inflatable member where the sections are joined thereby to provide yieldable size control for the adjacent sections as the member is inflated; and

    means for introducing a pressurized fluid into the interior of said inflatable member.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×