High tech footwear
April 13, 2009. 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 3670429 Shoes having vents for ventilating fresh air into the inside of the shoes Fixing device for securing non-rigid shoes on skis Dynamic device for holding the foot and the leg in position in a rigid structure Device to facilitate pedestrian locomotion Sole-and-heel structure having premolded bulges Ski boot Single story house addition structure and method Ski boot Ski boot with a device for securing the foot of the skier InventorAssigneeApplicationNo. 337265 filed on 04/13/1989US Classes:36/29, Pneumatic36/3B, Soles36/93, Form-fitting interior36/114Athletic shoe or attachment thereforExaminersPrimary: Meyers, Steven N.Foreign Patent References
International ClassesA43B 013/20A43B 007/06 AbstractA shoe, boot, sneaker, etc. incorporates a foot-actuated pump which is connected to one or more expandable air bladders located in portions of the footware where contour fitting is desirable. Walking or running actuates the pump. An adjustable relief valve connected to the bladder releases air when a preselected pressure is exceeded. The relief valve is accessible externally for easy adjustment by the wearer. Regardless of the external ambient temperature or degree of user activity, the pump, in conjunction with the relief valve, maintains a preselected pressure and assures that the selected fit between the user's foot and footware is maintained at all times. | |
