Patent ID: 11904542
Assignee: STRATASYS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. The 3D printer of claim 2, wherein the plurality of spaced apart mounting brackets comprises:
a first mounting bracket attached proximate a first edge of a first side of the platen with a first fastening mechanism through a substantially circular aperture in the grid of beams having a first biasing mechanism with a first biasing force;
a second mounting bracket attached proximate a second edge of the first side of the platen with a second fastening mechanism through a substantially circular aperture in the grid of beams having a second biasing mechanism with a second biasing force, wherein the second biasing force is less than the first biasing mechanism;
a third mounting bracket attached proximate the first edge of a second side of the platen with a third fastening mechanism through a longitudinal slot in the grid of beams having a third biasing mechanism with the first biasing force;
a fourth mounting bracket attached proximate the second edge of the second side of the platen with a fourth fastening mechanism through a longitudinal slot in the grid of beams having fourth biasing mechanism with the second biasing force; and
wherein as the platen assembly expands in the y direction the second and fourth biasing mechanisms compress to compensate for thermal expansion in the y direction and wherein the third and fourth fastening mechanisms move in the longitudinal slots to compensate for thermal expansion in the x direction.