Air circulating shoe pad

Boots – shoes – and leggings – Boots and shoes – Ventilated

Reexamination Certificate

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Details

C036S00300B, C036S029000

Reexamination Certificate

active

07316081

ABSTRACT:
A shoe pad includes air pumping elements for cooling the interior of a shoe. The pumping elements include forward pumping elements for pumping air from back to front, and backward pumping elements for pumping air from front to back. The pad includes an upper sheet attached to a lower sheet. Each pumping element includes a channel on the lower sheet covered by the upper sheet. The channel has an intake and an exhaust. Cavities are distributed along the channel. Resilient blisters on the upper sheet are aligned with the cavities on the lower sheet to define pumps. Each pump has an intake and an exhaust. Flap valves projecting down from the upper sheet are respectively positioned against the intakes of the pumps. Alignment pins projecting down from the top sheet are positioned in alignment holes on the lower sheet.

REFERENCES:
patent: 220475 (1879-10-01), Hannaford
patent: 592822 (1897-11-01), Parker
patent: 2474815 (1949-07-01), Brahm
patent: 3417494 (1968-12-01), Claff
patent: 3475836 (1969-11-01), Brahm
patent: 5375345 (1994-12-01), Djuric
patent: 5655314 (1997-08-01), Petracci
patent: 5826349 (1998-10-01), Goss
patent: 6041519 (2000-03-01), Cheng
patent: 6553690 (2003-04-01), Di Girolamo
patent: 6581303 (2003-06-01), Tuan
patent: 6671979 (2004-01-01), Cardarelli
patent: 2002/0066207 (2002-06-01), Cheng
patent: 2004/0078996 (2004-04-01), Brooks
patent: 2004/0163277 (2004-08-01), Saiz Zapata

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