Vacuum locking for bags

Abstract

A locking structure for an article includes a bladder including a first barrier element attached to a second barrier element to define a chamber having an interior void. A locking system includes locking elements that each attach to at least one elastic element. The locking elements each include at least one interface surface. The interior void of the bladder operable between a first pressure to move the locking system to a locked state and a second pressure to move the locking system to an unlocked state.

What is claimed is: 
     
         1 . A bag comprising:
 a body defining a storage compartment;   a bladder including a first barrier element attached to a second barrier element to define a chamber having an interior void, the bladder disposed within the body;   at least one elastic element disposed within the interior void; and   a plurality of locking elements disposed within the interior void and each attached to the at least one elastic element, the locking elements including an interface surface operable to selectively engage an interface surface of another one of the locking elements in response to fluid being removed from the interior void to restrict elongation of the bladder.   
     
     
         2 . The bag of  claim 1 , wherein the at least one elastic element includes a first fastening portion coupled to a first attachment region of each of the plurality of locking elements and a second fastening portion coupled to a second attachment region of each of the plurality of locking elements. 
     
     
         3 . The bag of  claim 2 , wherein the first and second attachment regions of each of the plurality of locking elements are defined along an outer edge of each of the plurality of locking elements and are asymmetrically coupled to the first and second fastening portions. 
     
     
         4 . The bag of  claim 2 , wherein the first attachment region is offset from the second attachment region relative to a longitudinal axis of the at least one elastic element. 
     
     
         5 . The bag of  claim 2 , wherein each of the plurality of locking elements defines an opening at a central region of each locking element and the first and second attachment regions are disposed proximate to the opening at the central region of each locking element. 
     
     
         6 . The bag of  claim 2 , wherein the at least one elastic element includes an outer fastening portion coupled to the first attachment region of the plurality of locking elements and an inner fastening portion coupled to the second attachment region of the plurality of locking elements. 
     
     
         7 . The bag of  claim 1 , wherein the at least one elastic element comprises a locking strip that defines a locking system with the plurality of locking elements, the locking system including a tether attached to one of the first barrier element and the second barrier element. 
     
     
         8 . The bag of  claim 1 , wherein each of the locking elements includes a pair of interface surfaces disposed on opposite sides of each locking element. 
     
     
         9 . The bag of  claim 8 , wherein the interface surfaces of the locking elements are in direct contact with the interface surfaces of adjacent locking elements to form a locking layer. 
     
     
         10 . The bag of  claim 1 , further comprising a pump configured to remove fluid from the interior void. 
     
     
         11 . A bag comprising:
 a body including side panels defining a storage compartment;   a bladder including a first barrier element attached to a second barrier element to define a chamber having an interior void, the bladder in contact with the body and extending between the side panels;   at least one elastic element disposed within the interior void; and   a plurality of locking elements disposed within the interior void and each attached to the at least one elastic element, the locking elements including an interface surface operable to selectively engage an interface surface of another one of the locking elements in response to fluid being removed from the interior void to restrict elongation of the bladder.   
     
     
         12 . The bag of  claim 11 , wherein the at least one elastic element includes a first fastening portion coupled to a first attachment region of each of the plurality of locking elements and a second fastening portion coupled to a second attachment region of each of the plurality of locking elements. 
     
     
         13 . The bag of  claim 12 , wherein the first and second attachment regions of each of the plurality of locking elements are defined along an outer edge of each of the plurality of locking elements and are asymmetrically coupled to the first and second fastening portions. 
     
     
         14 . The bag of  claim 12 , wherein the first attachment region is offset from the second attachment region relative to a longitudinal axis of the at least one elastic element. 
     
     
         15 . The bag of  claim 12 , wherein each of the plurality of locking elements defines an opening at a central region of each locking element and the first and second attachment regions are disposed proximate to the opening at the central region of each locking element. 
     
     
         16 . The bag of  claim 12 , wherein the at least one elastic element includes an outer fastening portion coupled to the first attachment region of the plurality of locking elements and an inner fastening portion coupled to the second attachment region of the plurality of locking elements. 
     
     
         17 . The bag of  claim 11 , wherein the at least one elastic element comprises a locking strip that defines a locking system with the plurality of locking elements, the locking system including a tether attached to one of the first barrier element and the second barrier element. 
     
     
         18 . The bag of  claim 11 , wherein each of the locking elements includes a pair of interface surfaces disposed on opposite sides of each locking element. 
     
     
         19 . The bag of  claim 18 , wherein the interface surfaces of the locking elements are in direct contact with the interface surfaces of adjacent locking elements to form a locking layer. 
     
     
         20 . The bag of  claim 11 , further comprising a pump configured to remove fluid from the interior void.