Desktop Metal, Inc.

Millipore Corporation

Richard Burnham

Aaron Preston

John LaPlante

Richard Remo Fontana

Joseph P Lane

Steven D Sheridan

Christopher A Scott

Louis L Bonhomme

Stéphane Jean Marie Olivier

Kenneth G Desilets

Douglas A Boucher

Richard J Shafner

Luc Lirot

A system and corresponding method to move build material in a three-dimensional (3D) printing system uses a gripper. The gripper is arranged to apply at least two opposing lateral forces to the build material. The at least two opposing lateral forces are applied to the build material, in conjunction with linear motion of the gripper, for at least a portion of a path the build material travels toward an extrusion head.

System and method for moving build material using a gripper

A system and corresponding method to move a rod of build material in a three-dimensional (3D) printing system uses a pusher. The rod of build material has distal and proximal ends relative to an extrusion head. The distal and proximal ends having distal and proximal end surfaces, respectively. The pusher engages with the rod and applies an axial force to at least a portion of the distal end surface of the rod for at least a portion of a path the rod travels toward the extrusion head. The axial force actuates the rod of build material without alteration, such as by shaving, fracturing, or otherwise deforming the rod of build material.

System and method for moving a rod of build material using a pusher in a 3D printing system

System and method for moving build material using a gripper in a 3D printing system

A plate liner detachably engageable onto a microarray plate (or underdrain plate component thereof), suited for preventing or confining pendant drop formation. It is provided either as a stand-alone item, or&#x2014;preferably&#x2014;in kit form, within a sanitary package, together with other pre-matched microarray filtration components.

Detachable engageable microarray plate liner

The present invention provides an underdrain having an improved spout. The underdrain has particular utility in the construction of both single-well and microarray filtration devices. In a principal embodiment, the underdrain is characterized by its incorporation of a straight-walled, roughly-textured spout, the spout being provided with microhole(s) at a terminal end thereof for the discharge of fluid conducted through the underdrain. An array comprising several of such underdrains can be mated with a corresponding array of wells, with separation material (e.g., membrane material) provided therebetween. The resultant microarray filtration device can be used for conducting several fluid assays contemporaneously with, for example, good 'pendant drop' control and low 'cross-talk'.

Underdrain useful in the construction of a filtration device

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Gloucester, MA, United States of America

Richard Burnham