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Abstract
Outer and inner inflatable members and a motor assembly including a fan are disposed on a base member. Air provided under pressure by the motor assembly including the fan passes through vents in the base member to inflate the inflatable members. Flakes are disposed in the space between the inflatable members. One vent, larger than the others, provides for the flakes to be lifted upwardly from the base member by the pressurized air. At least another vent in the base member provides for a movement of the flakes by the pressurized air in an annular direction in the space between the inflatable members. A permeable cap disposed on the outer inflatable member limits the pressure in the outer and inner inflatable members to a particular value.
96 Citations
48 Claims
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1. -40. (canceled)
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41. In combination,
a base member, an outer inflatable member, a first strap holding the outer inflatable member against the base member to provide for inflation of the outer inflatable member, a vent in the base member for passing air under pressure into the outer inflatable member to inflate the outer inflatable member, and a motor assembly disposed in the base member, the motor assembly being operable to produce air under pressure and to introduce the air under pressure to the vent for inflating the outer inflatable member.
Specification