Inflatable sole construction
Patent 4462171 Issued on July 31, 1984. Estimated Expiration Date: 
May 28, 2002. 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.
May 28, 2002. 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 References 1041185 2981010 Pressurized porous material cushion shoe base Ventilated footwear Patent #: 4364186 InventorApplicationNo. 06/383254 filed on 05/28/1982US Classes:36/3B, Soles36/29PneumaticExaminersPrimary: Schroeder, Werner H.Assistant: Meyers, Steven N. Attorney, Agent or FirmInternational ClassesA43B 13/18 (20060101)A43B 13/20 (20060101) AbstractA compartmentalized, variable cushioning sole construction in footwear having a top attached to an inner sole. The construction includes an outer sole and a flexible wall structure joining the peripheral edges of the inner and outer soles to form an enclosed space therebetween. This space is partitioned into fluid-tight, independently inflatable compartments corresponding to the heel, arch and ball regions of a foot. Resilient support structure in each of the compartments provides resilient weight support between the inner and outer soles when the compartments are deflated. | |
