Patent ID: 6755650
Filing Date: 2004-06-29
Classification: A61C

Abstract:
A dental apparatus comprising a connector arrangement for allowing a connection of a fluid reservoir containing a fluid which is supplied to a dental handpiece under control of a valve arrangement by a suction pump which has a suction line that is connected with a reception member of a connector piece of the fluid reservoir, comprising:a closure one-way check valve which is arranged on the connector piece of the fluid reservoir whereby a valve member which is biased by a closure spring towards a closing position on a valve seat of the connector piece may be pushed by a counterpart into an open position against the biasing force of the closure spring, and an areation one-way check valve which is arranged over an aeration opening of the connector piece of the fluid reservoir for compensating a negative pressure which will be produced inside of a fluid reservoir when the closure one-way check valve is opened at its valve member and fluid is drawn from the fluid reservoir via the suction line of the suction pump and supplied to the handpiece via a pressure line of the suction pump, said closure one-way check valve and said aeration one-way check valve being both arranged on a cap-shaped cover piece which for closing a fluid filler opening of the fluid reservoir may be fixed on its one side to the fluid reservoir and which on its opposite side is provided with a spigot-like connection piece for being fitted into a recess of the reception member.