Dci International, Inc.

Dental Components LLC

Richard W Hanson

John C Schmoegner

Michael Radicone

Leonard Marsh

An improved seal for a rotary valve for high temperature and high pressure fluids. A removable seal member adapted for disposition between a valve body and a valve member rotatably disposed in the valve body is provided. In one aspect of the invention, the seal member is adapted so that pressure exerted by the valve is sufficient to induce cold flow in the seal member. In another aspect of the invention, the seal member includes a pair of longitudinally disposed slots.

Seal for a rotary valve for high temperature and high pressure fluids

A quick-connect syringe tip for use with a dental handpiece. The syringe tip resists rotation about an axis through the connection end, allowing retraction of a cheek or lip without changing the orientation of a discharge fluid stream.

Dental syringe tip

A bottle for a dental rinse has a neck component provided with vertical and inclined channels to receive bayonet lock arms on a cap to lock the neck component to the cap. The bayonet arms project from a cap stem which is provided with an O-ring. Annular wall surfaces on the neck component alternately cooperate with the O-ring to seal and to vent the bottle during axial positioning of the neck component. The cap is mounted on a support and includes pressure and liquid carrying passageways in communication with the bottle.

Dental rinse bottle with quick connect

A dental office is provided with a system to purify air and/or water delivered to the operatory. Purification is by UV-C light applied to the utilities as they are transported from supply to delivery sites. Ideally, the system includes separate devices structured and arranged to effect purification of the ambient air circulating within the operatory; the water supplied to the operatory and the water delivered to and through dental hand pieces in connection with a procedure.

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Beaverton, OR, United States of America

Richard W Hanson