Patent ID: 7765772

Claim:
A capping head assembly, comprising: a rotatable sleeve securable to a rotatable drive spindle, with a bushing ring mounted to the rotatable sleeve for rotation there with; a rotatable housing positioned in a telescoping relationship with respect to the rotatable sleeve and bushing ring; a spring providing a force to bias the rotatable sleeve axially away from the rotatable housing; a clutch assembly linked to the rotatable housing; a cap gripper linked to the clutch assembly; and a linkage between the rotatable sleeve and the rotatable housing whereby rotation of the rotatable sleeve causes rotation of the rotatable housing, while the rotatable sleeve is still able to move axially relative to the rotatable housing in response to spring pressure; wherein the linkage is characterized by an arcuate polygonal surface on the bushing ring facing an arcuate polygonal surface on the rotatable housing in male/female mating fashion.