Patent · US Active

Detection of deformation of vats

US11780157B2 · kind B2 · utility

0Cited by

0References

27Claims

0Family size

Assignee

Dentsply Sirona Inc. · US

Inventors

Thomas MICHALICA · Neudorf, AT
Thomas Hasenzahl · Darmstadt, DE
Christian Schmidt · Erfurt, DE
Christian Stahl · Bensheim, DE

Key dates

Filing date	Oct 1, 2019
Grant date	Oct 10, 2023
Priority date	—
Expiry date	Sep 28, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01F22/02
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Device for a system for layer-by-layer construction of a body (K) from a substance (S) which can be hardened by radiation, comprising a vat having a vat base for receiving the substance (S) which can be hardened by radiation, comprising a building platform which is arranged above the vat base and which is height-adjustable in relation to the vat base and comprising a sensor cooperating with the vat base, wherein the vat base is configured to be at least partially flexible, wherein a chamber is provided wherein the chamber is delimited by an underside of the vat base, wherein the sensor is adapted to detect a volume change of the chamber and to provide a sensor signal from which a sign of the volume change can be determined.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.