Paddle

About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.

Reduction of tablet weight variability by optimizing paddle speed in the forced feeder of a high-speed rotary tablet press

Abstract: Context: Tableting is a complex process due to the large number of process parameters that can be varied. Knowledge and understanding of the influence of these parameters on the final product quality is of great importance for the industry, allowing economic efficiency and parametric release.Objective: The aim of this study was to investigate the influence of paddle speeds and fill depth at different tableting speeds on the weight and weight variability of tablets.Materials and methods: Two excipients possessing different flow behavior, microcrystalline cellulose (MCC) and dibasic calcium phosphate dihydrate (DCP), were selected as model powders. Tablets were manufactured via a high-speed rotary tablet press using design of experiments (DoE). During each experiment also the volume of powder in the forced feeder was measured.Results and discussion: Analysis of the DoE revealed that paddle speeds are of minor importance for tablet weight but significantly affect volume of powder inside the feeder in...

Integrated silicon profilometer and AFM head

Abstract: A topographic head for profilometry and AFM supports a central paddle by coaxial torsion bars projecting inward from an outer frame. A tip projects from the paddle distal from the bars. The topographic head's frame, bars and paddle are monolithically fabricated by micromachining from a semiconductor wafer. The torsion bars preferably include an integrated paddle rotation sensor. The topographic head may be carried on an XYZ stage for X, Y and Z axis translation. In a preferred embodiment, the XYZ stage is also monolithically fabricated by micromachining from a semiconductor wafer with a fixed outer base that is coupled to an X-axis stage via a plurality of flexures, and with the X-axis stage supporting a Y-axis stage also via a plurality of flexures.

Mammography breast compression device and method

Abstract: A breast compression device is disclosed for use in a mammography system A paddle support frame is provided which is slidably connected to a system arm of the mammography system The paddle support frame is located between the x-ray tube and the detector of the mammography system A compression paddle is pivotally connected within the support frame by a pivot connection The pivot connection is located on a chest wall side of the support frame The chest wall side is opposite the system arm The compression paddle is substantially horizontal to the detector and is rotatable around the pivot connection The compression paddle may include a breast portion which is substantially parallel to the detector and a chest wall portion which is substantially vertical to the detector The compression paddle may also have a contoured shape where the chest wall portion is angled away from the system arm and the breast portion is contoured to mimic the contours of the breast

Apparatus for thermally coupling a heat sink to a leadframe

Abstract: A molded plastic package for an integrated-circuit die includes a lead frame having a central die-attach paddle. One side of the die-attach paddle has an integrated-circuit die fixed thereto. A heat sink member is resiliently fixed to the other side of the die-attach paddle using a layer of viscous thermal grease between the heat sink member and the other side of the die-attach paddle. One or more holes are formed in the lead frame and are engaged by corresponding studs on the heat sink. The stud has a shoulder portion which engages the lead frame to prevent the stud from further passing through the hole in the lead frame.