Patent ID: 11868045
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. An apparatus for making a stereolithographic object, the apparatus comprising:
an element having a surface for disposing thereon a material used to make a stereolithographic object;
a platform for making the stereolithographic object thereon;
a positioner operably coupled to at least one of the platform and the element and operable to change a distance between the platform and the element and so change the distance of a portion of the stereolithographic object when made and the surface to be the thickness of a stereolithographic layer of the stereolithographic object; and
a force sensing system configured to generate force information indicative of a force transferred between the element and the platform, wherein the force sensing system comprises a plurality of force sensors that are spaced apart in two directions that are each orthogonal to a normal to the surface;
a window intermediate the plurality of force sensors; and
a controller for processing the force sensing information.