Expandable shoe and shoe assemblies

An expandable shoe, comprising:

• an outer shell and
• an adjustable inner assembly, disposed within the outer shell, the inner assembly having a first board portion and a second board portion and a control to adjust the position of the first board portion relative to the second board portion and to thereby adjust a dimension of the inner assembly and thereby a corresponding dimension of the shoe, wherein the control includes
• a locking mechanism shaped to engage and hold at least one of the first and second board portions;
• a biasing mechanism including a single spring to bias the locking mechanism into engagement with the at least one of the first and second board portions;
• and
• an urging member positioned and movable transversely to a longitudinal direction of the shoe and in transverse alignment with the locking mechanism so that the urging member may be moved transversely to contact and move the locking mechanism out of engagement with the at least one of the first and second board portions.

An expandable shoe, comprising:

• an outer shell and
• an adjustable inner assembly, disposed within the outer shell, the inner assembly having a first board portion and a second board portion and a control encapsulated within the inner assembly to adjust the position of the first board portion relative to the second board portion and to thereby adjust a dimension of the inner assembly and thereby a corresponding dimension of the shoe, wherein the control includes
• a locking mechanism shaped to engage and hold at least one of the first and second board portions;
• a biasing mechanism including a single spring to bias the locking mechanism into engagement with the at least one of the first and second board portions;
• and
• an urging member positioned and movable transversely to a longitudinal direction of the shoe and in transverse alignment with the locking mechanism so that the urging member may be moved transversely to contact and move the locking mechanism out of engagement with the at least one of the first and second board portions.

An expandable shoe, comprising:

• a front outer assembly;
• a rear outer assembly;
• an expandable segment attached to the front and rear outer assemblies to define a shoe outer shell wherein the expandable segment extends along the bottom, top and each side of the outer shell;
• and
• an adjustable inner assembly, disposed within the outer shell, the inner assembly having a first board portion and a second board portion in overlapping engagement with each other and a control to adjust the position of the first board portion relative to the second board portion and to thereby adjust a dimension of the inner assembly and thereby a corresponding dimension of the shoe, wherein the control includes
• a locking mechanism shaped to engage and hold at least one of the first and second board portions;
• a biasing mechanism to bias the locking mechanism into engagement with the at least one of the first and second board portions;
• and
• an urging member positioned and movable transversely to a longitudinal direction of the shoe and in transverse alignment with the locking mechanism so that the urging member may be moved transversely to contact and move the locking mechanism out of engagement with the at least one of the first and second board portions.