Abstract: A method for determining motional branch current in an ultrasonic transducer of an ultrasonic surgical device over multiple frequencies of a transducer drive signal. The method may comprise, at each of a plurality of frequencies of the transducer drive signal, oversampling a current and voltage of the transducer drive signal, receiving, by a processor, the current and voltage samples, and determining, by the processor, the motional branch current based on the current and voltage samples, a static capacitance of the ultrasonic transducer and the frequency of the transducer drive signal.

Abstract: A method for collaboration using digital notes. A facilitator starts a session during a video conferencing with participants and can share a screen with the participants. The screen displays a code, a session ID, and a link. Participants join the session by scanning the code with a camera, entering the session ID, or accessing the link. During the session, the participants can create digital notes or scan physical notes to have them converted to digital notes. The facilitator then receives the digital notes sent from the participants during the session and moves the digital notes to a group on the facilitator's screen. Since the facilitator's screen is shared with the participants, any participant can view the digital notes in the group from all of the participants for collaboration as controlled by the facilitator.

Abstract: A surgical instrument, has an end effector that includes an ultrasonic blade, and a clamp arm that moves relative to the ultrasonic blade from an opened position toward an intermediate position and a closed position. The clamp arm is offset from the ultrasonic blade to define a predetermined gap in the intermediate position between the opened position and the closed position. A clamp arm actuator connects to the clamp arm and moves from an opened configuration to a closed configuration to direct the clamp arm from the opened position toward the intermediate position and the closed position. A spacer connects with the clamp arm to inhibit movement of the clamp arm from the intermediate position toward the closed position for maintaining the predetermined gap between the clamp arm and the ultrasonic blade.

Abstract: A collapsible support structure has pairs of leg members (17) pivotally joined intermediate their length in crossed fashion by a connection member (18) that is capable of sliding longitudinally with the pivotal joint as the leg members extend in a scissors—like manner to support an object.

Abstract: A collapsible support structure has pairs of leg members (17) pivotally joined intermediate their length in crossed fashion by a connection member (18) that is capable of sliding longitudinally with the pivotal joint as the leg members extend in a scissors—like manner to support an object.

Abstract: A negative pressure filtration device is used in conjunction with a containment enclosure for the removal of hazardous material such as asbestos insulation surrounding pipes in habitable buildings. The inventive negative pressure filtration device generates a negative pressure within the containment enclosure, which negative pressure is quantitatively adjustable and capable of being continuously monitored by the user. Advantageously, the negative pressure filtration device is small, lightweight, portable, battery-operated and reliable, for use in a wide variety of hazardous material removal scenarios. The portability and versatility of the negative pressure filtration device is achieved through the use of operational vacuum pressures and air flow volumes much smaller than those of known systems.

Abstract: A money feeding machine having a friction feed mounted to feed from the top of a stack of money is disclosed. The stack of money is contained within a cassette having a moveable bottom. The bottom of the cassette is raised by a motor as money is fed from the top of the stack in order to maintain the top of the stack of money substantially at the top of the cassette and available for feeding by the friction feed. Ramps are mounted a predetermined distance down from the top of the cassette to squeeze sheets of money inwardly and cause them to bow upwardly as they are pushed up by the motor. The ramps cause blocks of mint money to be separated into a short loose stack of sheets above the ramps for reliable feeding by the friction feed.