Patent ID: 7735301

Claim:
A method for securing a closure on a cylindrical container, comprising: positioning a closure in a first position, the closure being substantially centered via a centering assembly along a centering axis that is generally normal to the closure; translating the substantially centered closure along the axis to a second position; positioning a cylindrical container, the container being substantially centered via the centering assembly along the axis; translating the substantially centered closure along the axis to a third position in which it is adjacent the substantially centered container; and relatively rotating the closure and the container to secure the closure to the container, wherein rotating the container comprises gripping the container with a plurality of centering members, each of the centering members being rotatable about a respective axis of rotation, and wherein the closure and centering members are configured such that, when each of the centering members is in contact with the container, an angle defined between (a) a point on the centering assembly through which a respective axis of rotation of a centering member passes, (b) a contact point between the centering member and the container, and (c) a point on the centering assembly through the centering axis is between about 140 and 178 degrees.