American Hospital Supply Corporation

Other

Thomas W Albert

Donald J Heil

A dental handpiece having an improved water/air spray system including a pair of substantially parallel tubes, one for water and the other for chip air, extending through the handle of the handpiece and terminating in a nozzle chamber of oval cross section. The tubes are generally cylindrical but are partially deformed at their distal ends, such deformation constituting a flattening of adjacent wall portions of the respective tubes. Such adjacent wall portions are disposed in contiguous relation and are cut away for a limited distance at the discharge end of the tube assembly to define the unitary nozzle chamber. The chamber has an oval discharge orifice for directing an elliptical spray pattern towards the tip of the dental bur. At the opposite end of the handpiece, the handle is equipped with a plug terminating in an external end face. Tubular extensions project from that end face for conveying air to the drive air and chip air passages. An open channel formed in the end face of the plug communicates with annular recesses disposed about such extensions, and each extension is provided with a lateral aperture communicating with the surrounding recess. The open side of the channel and the ends of the recesses are sealed by a sealing member when the handpiece is in operation.

Fluid spray system for dental handpiece

Dental handpiece wrench

A chuck wrench for dental handpieces in which the wrench has a unitary handle that may be easily gripped by a user for coupling the wrench to the head of a handpiece for adjusting the collet chuck thereof. The wrench includes a rigid shaft of non-circular cross section secured to the wrench body and at least one spring-loaded lug pin located alongside the shaft for keying the rotor of the handpiece to the handpiece cap.

Growing community of inventors

Bartlett, IL, United States of America

Thomas W Albert