Vacuum fitting ski boot with air pump

Details Vacuum fitting ski boot with air pump Vacuum fitting ski boot with air pump

1996-12-23

1998-03-17

Sewell, Paul T.

Boots, shoes, and leggings

Boots and shoes

Foot-supporting or foot-conforming feature

361176, A43B 504, A43B 516

Patent

active

057273383

ABSTRACT:
A vacuum fitted ski boot which includes an air pump for automatically pumping air from an interior cavity within the boot for holding the requisite vacuum to maintain a close-fitting contact between the user's foot and the boot. An ankle cuff is mounted for relative angular movement with respect to a boot shell. A vacuum pump is mounted on the boot and is operated responsive to angular movement of the ankle cuff when there is flexing motion between the user's lower leg and foot during skiing. In different embodiments the pump can be mounted on the anterior, posterior, medial or lateral sides of the boot. In another embodiment the pump is comprised of an envelope which is fitted between the boot sole and the instep of the user's foot. The envelope has wall portions which define an interior cavity, and the wall portions are caused to undergo movement toward and away from each other responsive to pronation and supination movement of the foot during skiing to pump air out from the interior cavity of the boot.

REFERENCES:
patent: 3786581 (1974-01-01), Mochizuki
patent: 4420893 (1983-12-01), Stephan
patent: 4654986 (1987-04-01), George
patent: 4724626 (1988-02-01), Baggio
patent: 4730403 (1988-03-01), Walkhoff
patent: 5375345 (1994-12-01), Djuric

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