Shoe having an inflatable bladder

A deflation mechanism for an article of footwear having an inflatable bladder, said deflation mechanism comprising:

• a first fluid inlet and second fluid inlet, wherein said first and second fluid inlets are fluidly connected to said inflatable bladder;
• a check valve forming a first seal with said first fluid inlet, wherein said first seal is released when the fluid pressure at said first fluid inlet is greater than a predetermined pressure;
• a release valve forming second fluid seal with said second fluid inlet, wherein said second fluid seal is released when actuated by a user;
• wherein a resistance of said check valve is adjustable in that said predetermined pressure at which said first seal is released is adjustable.

A deflation mechanism for an article of footwear having an inflatable bladder, said deflation mechanism comprising:

• a first fluid inlet and second fluid inlet, wherein said first and second fluid inlets are fluidly connected to said inflatable bladder;
• a check valve forming a first seal with said first fluid inlet, wherein said first seal is released when the fluid pressure at said first fluid inlet is greater than a predetermined pressure;
• a release valve forming second fluid seal with said second fluid inlet, wherein said second fluid seal is released when actuated by a user;
• wherein a resistance of said check valve is adjustable in that said predetermined pressure at which said first seal is released is adjustable;
• wherein said check valve is an umbrella valve and wherein applying pressure to a crown of said umbrella valve adjusts the predetermined pressure at which said first seal is released.

A deflation mechanism for an article of footwear having an inflatable bladder, said deflation mechanism comprising:

• a first fluid inlet and second fluid inlet, wherein said first and second fluid inlets are fluidly connected to said inflatable bladder;
• a check valve forming a first seal with said first fluid inlet, wherein said first seal is released when the fluid pressure at said first fluid inlet is greater than a predetermined pressure;
• a release valve forming second fluid seal with said second fluid inlet, wherein said second fluid seal is released when actuated by a user;
• wherein a resistance of said check valve is adjustable in that said predetermined pressure at which said first seal is released is adjustable;
• wherein said second seal is formed from a plunger biased towards said second fluid inlet, and wherein pressure on said plunger releases said second seal.

A deflation mechanism for an article of footwear having an inflatable bladder, said deflation mechanism comprising:

• a first fluid inlet and second fluid inlet, wherein said first and second fluid inlets are fluidly connected to said inflatable bladder;
• a check valve forming a first seal with said first fluid inlet, wherein said first seal is released when the fluid pressure at said first fluid inlet is greater than a predetermined pressure;
• a release valve forming second fluid seal with said second fluid inlet, wherein said second fluid seal is released when actuated by a user;
• wherein a resistance of said check valve is adjustable in that said predetermined pressure at which said first seal is released is adjustable, and
• at least one indicia for indicating a particular predetermined pressures at which said first seal is released.

A deflation mechanism for an article of footwear having an inflatable bladder, said deflation mechanism comprising:

• a first fluid inlet fluidly connected to said inflatable bladder;
• an umbrella check valve forming a first seal with said first fluid inlet, wherein said first seal is released when the fluid pressure at said first fluid inlet is greater than a predetermined pressure;
• and
• a lever, for applying pressure to a crown of said umbrella valve, wherein said lever adjusts the predetermined pressure at which said first seal is released;
• wherein said predetermined pressure is adjustable with respect to an amount of pressure applied to said crown of said umbrella valve.

A deflation mechanism for an article of footwear having an inflatable bladder, said deflation mechanism comprising:

• a first fluid inlet and second fluid inlet, wherein said first and second fluid inlets are fluidly connected to said inflatable bladder;
• a check valve forming a first seal with said first fluid inlet, wherein said first seal is released when the fluid pressure at said first fluid inlet is greater than a predetermined pressure;
• a release valve forming second fluid seal with said second fluid inlet, wherein said second fluid seal is released when actuated by a user;
• wherein a resistance of said check valve is adjustable in that said predetermined pressure at which said first seal is released is adjustable, and
• a base defining said first and second fluid inlets;
• and
• a cap engaging said base and covering said first and second fluid inlets.