Patent ID: 8562342

Claim:
A dental assembly comprising: a dental handpiece, the dental handpiece having a proximal end, a distal end, the distal end including an attachment for assembly of a removable workpiece; a handpiece body intermediate the proximal end and the distal end, the handpiece body having a gripping surface; the handpiece extending in a substantially axial direction along an axis, the axis including a portion of the distal end, the handpiece body and a portion of the proximal end; a coupler that includes at least a first portion extending in an axial direction, the first portion interfaces with an interior of the body to isolate portions of the body interior into at least one distinct chamber; a coupling unit having a first portion and a second portion, the first portion of the coupling unit being substantially coaxial with the handpiece body and the second portion of the coupling unit angled with respect to the handpiece axis, the second portion further including a fitting, the coupling unit including a plurality of conduits, the at least one distinct chamber in fluid communication with one of the conduits of the plurality of conduits; a generally flexible hose, the flexible hose having a hose connector with a hose fitting for attachment to the coupling fitting, wherein the hose includes separate supply lines for providing fluids to the handpiece through the conduits; and wherein the conduits transport the fluids from the hose, through the coupling unit and coupler to the handpiece; and wherein the hose fitting being attached to the second portion of the coupling unit at a movable angle, the movable angle is selectable from a preselected first fixed angle to a second preselected fixed angle in a range from 10° to 90°; and wherein at least one of the interfacing hose fitting and coupling unit fitting are a quick disconnect fitting to facilitate assembly of the hose to the coupling unit; and wherein the proximal end includes a swivel attachment to allow free rotation of the flexible hose.