Abstract: A 3D printer comprising: a vat for liquid photopolymer; a print platform for extending into the vat; a screen assembly have an arrangement of screens for providing an exposure of patterned electromagnetic radiation for selectively polymerising successive layers of photopolymer to build a 3D printed object on the print platform; and a control mechanism for controlling the separation of the print platform and screen assembly parallel to a build direction.

Abstract: A stereolithographic 3D printer comprising: a vat for liquid photopolymer; a print platform; a screen assembly having a screen support assembly supporting a screen for providing selective exposure of electromagnetic radiation for polymerising successive layers of photopolymer to build a 3D printed object on the print platform; and a control system for controlling the separation of the print platform and screen assembly parallel to a build direction, wherein the vat has a vat base that is resiliently deformable or has a resiliently deformable portion.

Abstract: A stereolithographic 3D printer comprising a number of functional stations that are connected in an automated process so that they can perform the following functions simultaneously; a) the selective exposure of liquid photopolymer, b) the washing off of excess photopolymer, c) the post exposure of the built part (optionally under water) and optionally d) the load and unloading of the part.

Abstract: This invention relates to the field of 3D printing used to make a dental aligner for the purpose of straightening teeth or a mouthguard for the purpose of protecting teeth. The appliance is a hard polymer layer that encases the upper, lower or both sets of teeth to exert correcting forces on the teeth to realign their position, optionally these clear aligners can also incorporate a wire for more rapid treatment. This invention describes a method of directly 3D printing the aligner or mouthguard from liquid photopolymer rather than as it is currently manufactured by thermoforming plastic over a custom model and then trimming it to the desired size.

Abstract: A stereolithographic 3D printer comprising a number of functional stations that are connected in an automated process so that they can perform the following functions simultaneously; a) the selective exposure of liquid photopolymer, b) the washing off of excess photopolymer, c) the post exposure of the built part (optionally under water) and optionally d) the load and unloading of the part.

Abstract: A stereolithographic 3D printer comprising: a vat for liquid photopolymer; a print platform; a screen assembly having a screen support assembly supporting a screen for providing selective exposure of electromagnetic radiation for polymerising successive layers of photopolymer to build a 3D printed object on the print platform; and a control system for controlling the separation of the print platform and screen assembly parallel to a build direction, wherein the vat has a vat base that is resiliently deformable or has a resiliently deformable portion.

Abstract: A 3D printer comprising: a vat for liquid photopolymer; a print platform for extending into the vat; a screen assembly have an arrangement of screens for providing an exposure of patterned electromagnetic radiation for selectively polymerising successive layers of photopolymer to build a 3D printed object on the print platform; and a control mechanism for controlling the separation of the print platform and screen assembly parallel to a build direction.

Abstract: The present invention is a low friction, low inertia, six-axis force feedback input device comprising an arm with double-jointed, tendon-driven revolute joints, a decoupled tendon-driven wrist, and a base with encoders and motors. The input device functions as a master robot manipulator of a microsurgical teleoperated robot system including a slave robot manipulator coupled to an amplifier chassis, which is coupled to a control chassis, which is coupled to a workstation with a graphical user interface. The amplifier chassis is coupled to the motors of the master robot manipulator and the control chassis is coupled to the encoders of the master robot manipulator. A force feedback can be applied to the input device and can be generated from the slave robot to enable a user to operate the slave robot via the input device without physically viewing the slave robot.

Abstract: The present invention is a double-jointed, tendon-driven revolute joint, a decoupled tendon-driven wrist, an antibacklash mechanism, a robot control system, and a robot manipulator incorporating the double-jointed, tendon-driven revolute joint, decoupled tendon-driven wrist, and antibacklash mechanism. The robot manipulator is a microsurgical teleoperated robot with actuators located at an actuator base. The overall system architecture includes a slave robot manipulator coupled to an amplifier chassis which is coupled to a control chassis. The control chassis is coupled to a workstation with a graphical user interface. Components of the robot manipulator are categorized into a mechanical sub-system, an electronics sub-system, a servo-control sub-system, and a high-level software control sub-system.