Abstract: The present invention relates to an extrusion process for preparing a low molecular weight PTFE micropowder, comprising the steps of: introducing a PTFE composition into a extruder; applying heat treatment to the extruder; extruding the PTFE composition in an extruder to reduce molecular weight through heat and shear force; cooling and pelletizing in a pelletizer to form granules of PTFE; and reducing the particle size of PTFE granules by milling method to form low molecular weight PTFE micropowder. The present invention also relates to an extrusion process for degradation of high molecular weight PTFE to produce low molecular weight Polytetrafluoroethylene micropowder.

Abstract: Disclosed subject matter relates to Peripheral Blood Smear (PBS) that determines an area to be scanned in PBS for analysis. A PBS analysing system captures a focused image at each of plurality of positions in the PBS and determines Quality Indicators (QIs) in focused image. Further, a region is identified in PBS where QIs of focused image satisfy predefined QI threshold limits, as a monolayer region of PBS and determines an initiation point in monolayer region based on cell count value and co-ordinates of each of the plurality of positions located in the monolayer region. Finally, the area to be scanned in monolayer region is determined based on the initiation point and a predefined scan pattern. Determining the area to be scanned yields accurate and faster results.

Abstract: A method for preparing a composite projectile body with preformed fragments precisely embedded within the walls of the projectile body. The process utilizes a combination of additive manufacturing and advanced powder metallurgy fabrication techniques. Specifically a skeletal structure or prefabricated cage body is filled with preformed fragments. The cage structure may be situated on a mandrel or tool inside a container. The container is filled with metal powder, degassed under vacuum, and sealed. The canister is then subjected to heat and pressure to consolidate the powder to full density. The canister is then removed and the compacted billet product is further machined to obtain a desired projectile body.

Abstract: Disclosed subject matter relates to Peripheral Blood Smear (PBS) that determines an area to be scanned in PBS for analysis. A PBS analysing system captures a focused image at each of plurality of positions in the PBS and determines Quality Indicators (QIs) in focused image. Further, a region is identified in PBS where QIs of focused image satisfy predefined QI threshold limits, as a monolayer region of PBS and determines an initiation point in monolayer region based on cell count value and co-ordinates of each of the plurality of positions located in the monolayer region. Finally, the area to be scanned in monolayer region is determined based on the initiation point and a predefined scan pattern. Determining the area to be scanned yields accurate and faster results.

Abstract: Process for making a fragmentation warhead using hot isostatic pressing where tungsten spheres, powdered steel, and interlock features on a mandrel are consolidated in a matrix. Then in the finished part, the front fragmentation cap, rear and interior geometries are machined, resulting in a finished warhead with an enhanced performance fragmentation cap integrally bonded to it.

Abstract: A non-faceted nanoparticle reinforced metal matrix composite having increased ductility, while maintaining strength. In particular, a non-faceted nanoparticle reinforced metal matrix composite is provided comprised of spherical or ellipsoidal shaped (non-faceted) nanoparticles comprising one or more of boron carbide, titanium diboride, silicon nitride, alumina and boron nitride, and a nanostructured matrix composite comprised of one or more metals and/or metal alloys. In addition, a method of manufacturing such a non-faceted nanoparticle reinforced metal matrix composite is provided.

Abstract: A multi-function force reflecting haptic interface including various sub-assemblies is disclosed. The sub-assemblies include multiple function user interfaces, a user interface docking station for setting the interface to a home position, temperature monitoring and control systems, and various kinematic cable drive systems.

Abstract: An improved method for the production of pyrophoric materials which does not employ hot NaOH and produces pyrophoric materials on various types of ceramic, metal, nanomaterial substrates. The method impregnates the substrate materials with pyrophoric iron or other materials resulting in materials that are “tunable” with respect to its pyrophoric output as determined by its temperature, rise time sustenance etc through selective variation of particle size, morphology, and diluents or reactive materials.

Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.

Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.

Abstract: A multi-function force reflecting haptic interface including various sub-assemblies is disclosed. The sub-assemblies include multiple function user interfaces, a user interface docking station for setting the interface to a home position, temperature monitoring and control systems, and various kinematic cable drive systems.

Abstract: A multi-function force reflecting haptic interface including various sub-assemblies is disclosed. The sub-assemblies include multiple function user interfaces, a user interface docking station for setting the interface to a home position, temperature monitoring and control systems, and various kinematic cable drive systems.

Abstract: An autonomous coverage robot includes a drive system, a bump sensor, and a proximity sensor. The drive system is configured to maneuver the robot according to a heading (turn) setting and a speed setting. The bump sensor is responsive to a collision of the robot with an obstacle in a forward direction. A method of navigating an autonomous coverage robot with respect to an object on a floor includes the robot autonomously traversing the floor in a cleaning mode at a full cleaning speed. Upon sensing a proximity of the object forward of the robot, the robot reduces the cleaning speed to a reduced cleaning speed while continuing towards the object until the robot detects a contact with the object. Upon sensing contact with the object, the robot turns with respect to the object and cleans next to the object, optionally substantially at the reduced cleaning speed.

Abstract: A coverage robot includes a chassis, a drive system, and a cleaning assembly. The cleaning assembly includes a housing and at least one driven cleaning roller including an elongated core with end mounting features defining a central longitudinal axis of rotation, multiple floor cleaning bristles extending radially outward from the core, and at least one compliant flap extending radially outward from the core to sweep a floor surface. The flap is configured to prevent errant filaments from spooling tightly about the core to aid subsequent removal of the filaments. In another aspect, a coverage robot includes a chassis, a drive system, a controller, and a cleaning assembly. The cleaning assembly includes a housing and at least one driven cleaning roller. The coverage robot includes a roller cleaning tool carried by the chassis and configured to longitudinally traverse the roller to remove accumulated debris from the cleaning roller.

Abstract: An autonomous coverage robot includes a chassis, a drive system to maneuver the robot, an edge cleaning head carried, and a controller. The controller is configured to monitor motor current associated with the edge cleaning head and to reverse bias the edge cleaning head motor in response to an elevated motor current, while continuing to maneuver the robot across the floor. In another aspect, an autonomous coverage robot includes a drive system, a bump sensor, and a proximity sensor. The drive system is configured to reduce a speed setting in response to a signal from the proximity sensor indicating detection of a potential obstacle in a forward direction, while continuing to advance the robot according to a heading setting. Furthermore, the drive system is configured to alter the heading setting in response to a signal received from the bump sensor indicating contact with an obstacle.

Abstract: Disclosed is a flow-softening tungsten alloy having the general formula: W100-pAiBjCkDe wherein W is tungsten; A is one or more elements selected from the group consisting of nickel, iron, chromium and cobalt; B is in or more elements selected from the group consisting of molybdenum, niobium and tantalum; C is one or more of the elements selected from the groups consisting of titanium and aluminum; D is one or more elements selected from the group consisting of boron, carbon, and silicon; i is from about 5 to about 8 weight percent; j is from 0 to about 4 weight percent; k is from about 0.1 to about 4 weight percent; 1 is from 0 to about 0.1 weight percent; and p is greater than or equal to about 7 weight percent and less than or equal to about 20 weight percent. In this alloy p is approximately equal to the sum of i, j, k and 1. A method of preparing this alloy and a kinetic energy penetrator manufactured from it are also disclosed.

Abstract: A multi-function force reflecting haptic interface including various sub-assemblies is disclosed. The sub-assemblies include multiple function user interfaces, a user interface docking station for setting the interface to a home position, temperature monitoring and control systems, and various kinematic cable drive systems.

Abstract: A method for designing and fabricating an integrated circuit is described. An increase or a decrease in a total propagation delay time 311 of a signal on a victim net 203 is accurately modeled using a modified decoupled simulation model 300. Victim net 203 is modeled as a distributed capacitor 320a-c that has a total value equal to Cgnd+2*K*Ccoup. A match propagation delay time which includes a variation in propagation delay caused by signal coupling from aggressor nets located adjacent to the victim net is determined by simulating a representative circuit using a coupled distributed load simulation model to accurately determine the match propagation delay time. K is determined using an equation in which K=1+(match delay−unmodified delay)/(2*R*Ccoup). R is the effective drive resistance of a buffer which drives the victim net and associated signal trace resistance.

Abstract: A tungsten heavy alloy composition comprising tungsten, iron and elements selected from the groups X, Y and Z and having the formula W.sub.100-p Fe.sub.i X.sub.j Y.sub.k Z.sub.l. Such that "X" is one or more elements selected from the group consisting of Ni, Mn and Co; "Y" is one or more elements selected from the group consisting of Cr, Mo and V; "Z" is one or more elements selected from the group consisting of C, Si, Ti and Al; "i" ranges from 5 to 19.5 weight percent; "j" ranges from 0.05 to 6 weight percent; "k" ranges from 0.15 to 5 weight percent; "l" ranges from 0.05 to 4 weight percent; and "p" is the mathematical sum of i, j, k and l, and ranges from 7 to 20 such that "100-p" ranges from 93 to 80 weight percent. The blended powder mixture thus formed is hot consolidated to full density. The hot consolidated blended powder mixture is subjected to a hardening heat treatment.

Abstract: A tungsten heavy alloy composition comprising tungsten, iron and elements selected from the groups X, Y and Z and having the formula W.sub.100-p Fe.sub.i X.sub.j Y.sub.k Z.sub.l. Such that "X" is one or more elements selected from the group consisting of Ni, Mn and Co; "Y" is one or more elements selected from the group consisting of Cr, Mo and V; "Z" is one or more elements selected from the group consisting of C, Si, Ti and Al; "i" ranges from 5 to 19.5 weight percent; "j" ranges from 0.05 to 6 weight percent; "k" ranges from 0.15 to 5 weight percent; "l" ranges from 0.05 to 4 weight percent; and "p" is the mathematical sum of i, j, k and l, and ranges from 7 to 20 such that "100-p" ranges from 93 to 80 weight percent. The blended powder mixture thus formed is hot consolidated to full density. The hot consolidated blended powder mixture is subjected to a hardening heat treatment.