Patent ID: 8777616

Claim:
A cordless dental handpiece, comprising: a first module that includes a first drive that is configured to detachably engage a dental tool; and a second module configured to detachably engage the first module, the second module comprising a battery compartment; wherein the first module of the cordless dental handpiece is further configured to detachably engage the dental tool at a proximal end, and wherein the first module has a hollow distal end such that the battery compartment of the second module can be accommodated when the first module is engaged with the second module, the cordless dental handpiece further comprising a connection mechanism, wherein the connection mechanism comprises a first ring positioned and secured within the first module and a resilient second ring positioned and secured within the second module, wherein the second ring includes a gap, the gap permitting the second ring to constrict upon circumferential force being applied to the second ring by the first ring.