Shock absorbing system for human feet
February 27, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesThrust producing shoe sole and heel Footwear having improved shock absorption Shoe sole construction Sole-and-heel structure having premolded bulges Disc spring sole structure Shoe construction with air cushioning Footwear having ventilation and shock-absorbing properties Shock absorbing device Shock absorbing system for footwear application Patent #: 4999931 InventorsApplicationNo. 533526 filed on 02/27/1995US Classes:36/29, Pneumatic36/28CushionExaminersPrimary: Kavanaugh, TedForeign Patent References
International ClassA43B 013/20AbstractA shock absorbing mid sole component in human footwear is disclosed and which constructed from an upper half, containing two cavities that act as a gas chamber, a lower half, containing two interconnected cavities designed so, a calibrated transfer of liquid can be achieved by manually turning screw, an elastomeric bladder portion in the inside of the shoe sole that is designed to carry the shock absorbing liquid between the bladders in a regulated selectable rate. | |
