Pressurized ski boot
Patent 4730403 Issued on March 15, 1988. Estimated Expiration Date: 
July 23, 2006. 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.
July 23, 2006. 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 ReferencesSki boot Rear-entry ski boot Vacuum fitting ski boot Hydraulic fit system for footwear Patent #: 4662087 InventorAssigneeApplicationNo. 06/888599 filed on 07/23/1986US Classes:36/117.8, Retaining means engages rear of foot or leg36/117.7, With adjustment mechanism36/117.9, Retaining means engages instep or shin36/93Form-fitting interiorExaminersPrimary: Kee Chi, JamesAttorney, Agent or FirmInternational ClassA43B 5/04 (20060101)Foreign Application Priority Data1985-07-24 CHAbstractA sports shoe (1) is provided with air chambers underneath a comparatively rigid outer shell (2) such that pressure in these air chambers, i.e., the compression on the foot, can be adjusted by a pump system (5, 6). The design of the pump system is simple, easy to manufacture, compact and operationally reliable due to the valves (14, 15) of the pump system being enclosed in a common housing part (13) separated by a partition (20) from the membrane pump chamber (11). The valves (14, 15) are mounted coaxially in tandem sequence. The evacuating valve (15) can also serve as the pump suction valve and is provided at an end (37) with a manually displaceable stem which, during evacuation of the air chamber, wil make contact with the valve stem (b 32) of the pump pressure valve (14). | |
