Foldable cart system and method

A cart comprising:

• a plurality of vertical support members vertically extended with the substantially horizontal deck on top of the vertical support members in a first configuration, two of the plurality of vertical support members being front legs with front leg wheels and two of the vertical support members extending diagonally beneath the substantially horizontal deck to form rear legs with rear leg wheels and linkage mechanisms, lower hinged members connected to the front legs and the linkage mechanisms and upper hinged members connected to the substantially horizontal deck and the linkage mechanisms wherein the lower and upper hinged members are fully extended at pivot points allowing the plurality of vertical support members to sweep toward the back of the cart during folding;
• said linkage mechanisms of the rear legs having first pivot pins capable of sliding in first tracks from first pivot pin first positions to first pivot pin second positions to move first links which are coupled between the first pivot pins and the lower hinged members upon activation of a release cable and having second pivot pins capable of sliding in second tracks from second pivot pin first positions to second pivot pin second positions to move second links which are coupled between the second pivot pins and the upper hinged members upon application of force;
• and
• wherein said plurality of linkage mechanisms are capable of bending the lower hinged members and the upper hinged members at the pivot points to cause the plurality of front legs and plurality of rear legs to fold into a second configuration wherein the front and rear legs are substantially parallel to and under the substantially horizontal deck.

A method of folding a cart comprising:

• receiving an activation of a control lever of the cart having front legs with front leg wheels and diagonally extending rear legs with rear leg wheels supporting a deck to apply a force through a release cable to activate a plurality of first pivot pins in a plurality of linkage mechanisms located on the rear legs;
• whereupon activation said plurality of first pivot pins slide in first tracks of the linkage mechanisms from first pivot pin first positions to first pivot pin second positions to move first links which are coupled between the first pivot pins and lower hinged members also connected to the front legs;
• whereupon receipt of force applied to the cart, second pivot pins of the linking mechanisms slide in second tracks from second pivot pin first positions to second pivot pin second positions to move second links which are coupled between the second pivot pins and upper hinged members also connected to the deck;
• and
• whereupon the lower hinged members and the upper hinged members bend at pivot points to cause the front legs and rear legs to fold into a configuration wherein the front and rear legs are substantially parallel to and under the deck.

A folding cart comprising:

• a deck supported by a plurality of front legs and a plurality of rear legs when in an open position;
• said plurality of rear legs each having a link mechanism coupled to a plurality of lower hinges which are attached to each of the plurality of front legs and coupled to a plurality of upper hinges which are attached to the deck;
• said link mechanisms capable of bending the plurality of upper hinges and the plurality of lower hinges to cause the plurality of front legs and plurality of rear legs to fold to a compact position;
• wherein each of the link mechanisms further include a first link connected to at least one of the plurality of lower hinges and to at least one of a plurality of first tracks by one of a plurality of first pivot pins, said at least one of the plurality of first pivot pins connected to a release cable which is capable of releasing the at least one of the plurality of first pivot pins to allow for movement from a first pin first position to a first pin second position upon activation of the release cable;
• and
• wherein each of the link mechanisms further include at least one of a plurality of second links connected to the at least one upper hinge and to at least one of a plurality of second tracks by one of a plurality of second pivot pins and said at least one of the plurality of second pivot pins capable of being forced from a second pin first position to a second pin second position to allow the plurality of lower hinges, the plurality of upper hinges and the plurality of rear legs to fold.