Variable support shoe

A variable air support shoe for providing support to an ankle and an upper foot and ankle area of a user, said shoe including a tongue and upper portions of said side walls constituting means for enclosing the upper portion of said shoe and said ankle, comprising:

• a sole;
• sidewalls secured to said sole;
• inflatable bladders;
• means for mounting said inflatable bladders on said means for enclosing the upper portion of said shoe and said ankle, for applying supporting pressure to the foot on the sides and the rear of the foot;
• pump means mounted in the sole of the shoe;
• said sole being substantially continuous on its lower surface in the area where said pump means is located and is free of any recess exposing said pump from below said shoe;
• said shoe including means for automatically actuating said pump means during normal walking or running for supplying air to said bladders;
• and
• one-way valving means for preventing flow of air back from said bladders to said pump means;
• whereby walking or running activity increases the air pressure in said shoe and provides additional support against possible injury to the foot or ankle.

A variable air support shoe for providing support to an ankle and an upper foot and ankle area of a user, said support shoe comprising:

• a sole;
• sidewalls secured to said sole;
• said shoe including a tongue and upper portions of said side walls constituting means for enclosing the upper portion of said shoe and said ankle;
• inflatable bladder means;
• means for mounting said inflatable bladder means on said means for enclosing the upper portion of said shoe and said ankle, for applying supporting pressure to the foot and ankle area on the sides thereof;
• pump means mounted in the sole of the shoe automatically actuated by the foot when walking or running for supplying air to said bladder means;
• said pump means (a) being encapsulated wholly within the shoe during active pumping action and during use of the shoe, (b) forming a resilient support for the foot, and (c) being mounted above the bottom of the sole;
• and
• said shoe including means for automatically actuating said pump means by pressure between the foot and the sole of the shoe during normal walking and running;
• whereby walking or running activity increases the air pressure in said shoe and provides additional support against possible injury.

In a variable air support shoe having a sole, sidewalls secured to said sole, and laces for securing the sidewalls of said shoe together, said shoe including a tongue and upper portions of said side walls constituting means for enclosing the upper portion of said shoe and an ankle, said shoe having an inner area above said sole for receiving the foot of a user;

• the improvement comprising:
• inflatable bladders;
• means for mounting said inflatable bladders on said means for enclosing the upper portion of said shoe and said ankle, for applying supporting pressure to the foot and ankle area toward the sides and the rear thereof;
• means including a pump mounted in the sole of the shoe automatically actuated by the foot when walking or running for supplying air to said bladders, and maintaining them at an elevated pressure during such walking or running activity;
• relief means for automatically releasing air from said bladders over a predetermined period of time which is relatively long compared to the periodicity of normal walking or running steps;
• said shoe being formed of flexible material so as to be suitable for walking or running and having a sole with a continuous lower surface;
• and
• said shoe further having flexible material between said pump means and the inner area of the shoe for direct actuation of the pump means by the foot;
• whereby walking or running activity increases the air pressure in said shoe and provides additional support against possible injury to the foot or ankle, and the increased pressure is released within a few minutes after the activity stops to minimize pressure on the foot while resting.

A variable air support shoe for providing support to an ankle and an upper foot and ankle area of a user, said support shoe comprising:

• a sole;
• sidewalls secured to said sole;
• said shoe having an inner area above said sole for receiving the foot of a user;
• inflatable bladder means mounted on said sidewalls for applying supporting pressure to the foot and ankle area on the sides and the rear thereof;
• pump means mounted in the sole of the shoe automatically actuated by the foot when walking or running for supplying air to said bladder means;
• said pump means (a) being encapsulated wholly within the shoe during active pumping action and during use of the shoe, (b) forming a resilient support for the foot, and (c) being mounted above the bottom of the sole;
• said shoe including means for actuating said pump means during normal walking or running by pressure between the foot and the sole of the shoe;
• one-way valving means for preventing flow of air back from said bladder means to said pump means;
• said shoe being formed of flexible material so as to be suitable for walking or running and having a sole with a continuous unitary lower surface;
• and
• said shoe further having flexible material between said pump means and the inner area of the shoe for direct actuation of the pump means by the foot during normal walking or running by the user;
• whereby walking or running activity increases the air pressure in said shoe and provides additional support against possible injury.

In footwear having a toe end and a heel end and having an outer sole extending from said toe end toward said heel end, said outer sole having an exterior surface for contact with the ground, and said footwear having an upper portion connected to said sole forming an enclosure for enclosing at least a part of the foot of a wearer between the outer sole and the upper portion, and within said enclosure an inner supporting surface for supporting the bottom of a foot, said inner supporting surface extending from the heel end toward said toe end, the improvement therein comprising:

• bladder means for holding air, said bladder means being positioned at least partially within said enclosure;
• pumping means including a compressible chamber for delivering outside ambient air to said bladder means by flexing between said inner supporting surface and said exterior surface of said footwear, a segment of said hollow space and a portion of said exterior surface and having two ends, one said end being closer to said toe end of said footwear and connected to said main sole portion, said pumping means being subject to deflection by a force applied between said inner supporting surface and said segment exterior surface, whereby said hollow space may be alternatively reduced and returned to its unreduced size, in flexing in response to said force, to deliver said air;
• said footwear including means for automatically actuating said pumping means during normal walking and running;
• and
• said sole being substantially continuous on its lower surface in the area where said pump means is located and is free of any recess exposing said pump from below said shoe.

A variable air support shoe, said shoe including a tongue and upper portions of said side walls constituting means for enclosing the upper portion of said shoe and an ankle, comprising:

• a sole;
• sidewalls secured to said sole;
• inflatable bladders;
• means for mounting said inflatable bladders on said means for enclosing the upper portion of said shoe and said ankle, for applying supporting pressure to the foot on the sides and the rear of the foot;
• pump means mounted in the sole of the shoe;
• said sole being substantially continuous on its lower surface in the area where said pump means is located and is free of any recess exposing said pump from below said shoe;
• said shoe including means for automatically actuating said pump means during normal walking or running for supplying air to said bladders;
• one-way valving means for preventing flow of air back from said bladders to said pump means;
• and
• means for automatically bleeding air from said bladder means to maintain pressure within said bladder means during active pumping, but to permit a reduction in pressure during inactive periods;
• whereby walking or running activity increases the air pressure in said shoe and provides additional support against possible injury to the foot or ankle.