초록 ▼

An improved composite for absorbing and dispersing impacting forces is disclosed. The composite includes a flexible plastic enclosure defining an internal cavity. The flexible enclosure is generally impermeable to air and capable of having its internal pressure changed. The composite further include

An improved composite for absorbing and dispersing impacting forces is disclosed. The composite includes a flexible plastic enclosure defining an internal cavity. The flexible enclosure is generally impermeable to air and capable of having its internal pressure changed. The composite further includes a foam core filling the cavity and retained within the cavity and adhered on substantially all of its external surface to the internal surface of the cavity. The cavity can be pressurized for higher impact absorbance. Methods for fabricating the composites are disclosed, as well.

대표청구항 ▼

1. Apparatus for protecting feet, comprising a tennis type shoe suitable for court, field, track and gym sport, comprising a generally flexible upper, a generally flat sole and mechanical means for fastening; the shoe includingan inflatable pad compromising a first enclosure formed of material gener

1. Apparatus for protecting feet, comprising a tennis type shoe suitable for court, field, track and gym sport, comprising a generally flexible upper, a generally flat sole and mechanical means for fastening; the shoe includingan inflatable pad compromising a first enclosure formed of material generally impermeable to air and capable of having its internal pressure changed, the pad attached to the shoe; a built-in pump attached to the shoe comprising a second enclosure formed of material generally impermeable to air, the second enclosure defining a pump cavity; a passage within the shoe establishing fluid communication between the first and second enclosures; and a one-way valve attached to the pump to permit air to pass from outside to inside the second enclosure.