Modular carts having a single vertical frame

A cart, comprising:

• a frame;
• a first leg, a second leg, and a third leg, each coupled with a bracket that is slidably coupled with the frame;
• a coupling mechanism comprising a clamp that is configured to couple with the frame;
• wherein the clamp comprises a first grip having a first tightening mechanism and a second grip having a second tightening mechanism;
• a female coupler attached to the clamp, the female coupler comprising a v-shaped intrusion, wherein the v-shaped intrusion comprises a first portion, a second portion, and a back surface;
• wherein the first portion comprises a first left surface and a first right surface extending from the back surface, the first left surface and the first right surface creating a first angle therebetween;
• wherein the second portion comprises a left flare and a right flare extending from the back surface, the left flare and the right flare creating a second angle therebetween;
• wherein the second angle is greater than the first angle;
• wherein the first left surface and the first right surface each form an acute angle with the back surface;
• wherein the left flare and the right flare each form a right, or obtuse, angle with the back surface;
• a male coupler comprising a v-shaped extrusion that is sized and dimensioned to fit at least partially within the v-shaped intrusion of the female coupler;
• and
• wherein the v-shaped extrusion comprises a third angle that matches the first angle of the v-shaped intrusion.