Abstract A device used for operating dental drilling machines has a manually operated setter with an electrical actuator, for example, a potentiometer, for setting the desired driving revolutions and a rearwardly connected regulating device which adjusts the drive to the speed provided by the setter, particularly an electronic drive. The regulating device can be selectively driven electrically or by a turbine. The machine operating device is particularly characterized by the provision of a switch by means of which the outlet of the regulating device is switched to an electromotor or to an electric valve regulating the amount of compressed air supplied to the turbine depending as to which of the two types of drives is being used.
Inventors
👤 O Fleer
👤 H Grill
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-23 11:23
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/0007; A61C1/0015
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
A device for operating a dental drill with an electric motor and a dental drill with a turbine drive, said device having a control element including a potentiometer controlling said dental drills, an electronic actuating device connected with said potentiometer, an electric valve for varying the amount of compressed air supplied to the turbine drive, and a switch device connected with said electronic actuating device and connecting selectively said electric motor and said electric valve with the electronic actuating device.
Claim 2
Independent Claim
80 words
A device for operating a dental drill with an electric motor and a dental drill with a turbine drive, said device having a control element including a potentiometer controlling said dental drills, an electronic actuating device connected with said potentiometer, an electric valve for varying the amount of compressed air supplied to the turbine drive, and a switch device connected with said electronic actuating device and connecting selectively said electric motor and said electric valve with the electronic actuating device.
Claim 3
Dependent Claim
39 words
A device in accordance with claim 1, wherein said switch device when providing connection to either the electric motor drive or the turbine drive interrupts the supply of electrical current to the drive with which it is not connected.
Claim 4
Dependent Claim
31 words
A device in accordance with claim 2, wherein said electric valve is connected with said electronic actuating device to provide additional voltage corresponding to the lowest actuating voltage of the valve.
Claim 5
Dependent Claim
29 words
A device in accordance with claim 2, comprising a pressure gauge connected to said turbine drive and said electronic actuating device to supply an existing value for regulating purposes.