Patent ID: 8191718

Claim:
A rack for holding a plurality of containers, the rack comprising two or more removably attached rack modules, each rack module including: a side including one or more receptacles, each receptacle having a contact surface shaped to receive a container; and one or more engagement features located on a support structure of the rack module, the one or more engagement features operable to removably attach the rack module to one or more complementary engagement features of a second rack module, wherein the engagement feature of the first rack module includes a protuberance that extends from a surface of the engagement feature and fits into a divot of the complementary engagement feature of the second rack module for improved attachment and detachment, and wherein the attached rack module and the second rack module are commonly oriented to receive containers therein and wherein the one or more engagement features interfittingly mate and attach with the one or more complementary engagement features; and wherein the side includes a partial receptacle having a shape configured to form a receptacle in combination with a matching partial receptacle when the rack module is attached to the second rack module having the matching partial receptacle; and wherein the engagement features are integrated with one or more corners of the rack module.