Device for determining the end of the processing time for hardening masses
Assignee3M Espe AG
InventorsGerd Brandhorst, Hermann Nirschl, Mark Peuker, Ingo Wagner
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Abstract
A device is provided which determines the end of the processsing time for hardening masses, in particular dental molding masses. The device comprises a display unit and a sensor unit which record the change in at least one of the rheological properties of the mass. A method that can be used with such a device is described.
Claims22
A device for monitoring the setting profile of hardening compounds, comprising:
- a mixer-shaft motor having a control;
- a mixer shaft which may be connected to a dynamic disposable mixer configured for mixing the hardening compound;
- a seat for a cartridge which can be connected to the dynamic disposable mixer which is used to mix the hardening compound;
- a display unit;
- and
- a sensor unit which can record the change in at least one of the rheological properties of the compound,
- wherein the sensor unit is coupled to the mixer-shaft motor;
- and
- wherein the disposable mixer cooperates with the sensor unit and is configured to facilitate dispensing a first portion of the hardening compound and measuring the rheological properties of a second portion of the hardening compound remaining in the disposable mixer after the dispensing of the first portion.
A method for recording change and outputting a signal of change in a mixed and dispersed compound, comprising:
- a) mixing a hardening compound in a dynamic disposable mixer which is driven by a mixer-shaft motor;
- b) dispensing almost all of the compound from the dynamic disposable mixer;
- c) recording the change in at least one of the rheological properties of the mixed compound which remains in the dynamic disposable mixer via a sensor unit;
- and
- d) outputting a signal as soon as the value of the change from step c) has reached a predeterminable threshold value,
- wherein the sensor unit cooperates with the mixer-shaft motor.
A dynamic disposable mixer device for mixing, dispensing and subsequently monitoring the setting profile of hardening compounds comprising:
- a mixer-shaft motor having a control;
- a mixer shaft;
- a sensor unit which can record the change in at least one of the rheological properties of the hardening compounds, wherein the sensor unit is coupled to the mixer-shaft motor;
- a display unit;
- and
- a dynamic disposable mixer which is configured to mix and dispense the hardening compounds, wherein the disposable mixer cooperates with the sensor unit to record the change in a rheological property of a portion of the hardening compound remaining in the mixer after a separate portion of the hardening compound has been dispensed.
Dependencies are inferred from the claim text.