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    • 7. 发明专利
    • BR6914699D0
    • 1973-01-11
    • BR21469969
    • 1969-12-02
    • FUKUOKA TTATSUO FUKUOKA
    • TATSUO FUKUOKAFUKUOKA T
    • A43B3/10A43B7/06A43B13/20B29C49/04C08B9/04D01F2/08
    • 1278990 Boots &c T FUKUOKA 30 Dec 1969 [14 June 1969 (5)] 50458/71 Divided out of 1278989 Heading A3B A shoe bottom component A, e.g. an insole, outsole or main sole body, is integrally formed of a thermoplastic or thermosetting synthetic resin material and includes a hollow chamber 1 surrounded by an upper wall 2, side walls 3 and a lower wall 4, the thickness of the side walls 3 and lower wall 4 being greater than the thickness of the upper wall 2. The sole may be formed by blow moulding a plastic tube (not shown) having a rectangular cross-section and having wall thicknesses corresponding to the walls 2, 3, 4. The inside surfaces of the chamber 1 may be formed with ridges 5, 6 which may be opposite each other as shown or staggered. The ridges 5, 6 may extend longitudinally or transversely or may be arranged in other patterns. Grooves 7 may be formed on the surface of the sole A in the same position as the ridges 5. The soles and insoles may have holes in their upper walls to provide a ventilating action as the user walks. Fig. 8 shows a ventilating sole having holes 21, a wedge heel 22 having a bellows-like shape 23 and an internal projection 24. Sports shoes and ordinary shoes incorporating hollow soles are also illustrated.