Automatic opening for a compartment in a pack

A wearable pack having at least one strap, comprising:

• a body defining a volume for the containment of articles, the body generally having a front surface and an opposing back surface, opposing side surfaces, and opposing top and bottom surfaces, the surfaces being arranged to define a compartment of the pack;
• the front surface having upper and lower portions, the upper portion comprising a hingeable section hingeably coupled to the lower portion, the hingeable section having a first condition providing an opening to the compartment in the pack and a second condition closing the opening to the compartment, wherein the front portion is movable relative to the back portion by the front portion's hinging along a joint that is defined by (1) a lower end of the hingeable section and (2) the top end of the lower portion of the front surface;
• a closure system for locking the hingeable section in the closed condition;
• the hingeable section being coupled to a spring system that is unloaded when the hingeable section is in the first condition and relatively loaded when in the second condition so that the compartment becomes automatically open when the closure system is released;
• wherein the hingeable section includes a movable frame member that is pivotably connected to the body portion of the pack and coupled to the spring system;
• and
• wherein the hingeable section is pivotable relative to a back portion so as to create an opening at the top of the pack;
• and wherein the hingeable section hinges along a joint comprising a flexure bearing or living hinge formed in a pliable material.

A method of making a wearable pack having at least one shoulder strap, comprising:

• providing a body defining a volume for the containment of articles, the body generally having a front surface and an opposing back surface, opposing side surfaces, and opposing top and bottom surfaces, the surfaces being arranged to define a compartment of the pack;
• the front surface having upper and lower portions, the upper portion comprising a hingeable section hingeably coupled to the lower portion, the hingeable section having a first condition providing an opening to the compartment in the pack and a second condition closing the opening to the compartment, wherein the front portion is movable relative to the back portion by the front portion's hinging along a joint that is defined by (1) a lower end of the hingeable section and (2) the top end of the lower portion of the front surface;
• providing the pack with a closure system for locking the hingeable section in the closed condition;
• and
• providing the pack with a spring system that is coupled to the hingeable section and is unloaded when the hingeable section is in the first condition and relatively loaded when in the second condition so that the compartment becomes automatically open when the closure system is released.