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 and apparatus are disclosed for graphically accessing of multiple simultaneously active software applications within a data processing system having a video display screen having fixed dimensions. An electronic work space is established having dimensions substantially larger than the dimensions of the video display screen. Electronic representations of multiple software applications within viewports or "windows" are then disposed at selected locations within the electronic work space. A movable viewport, having effective dimensions substantially equal to the dimensions of the video display screen, is then utilized to permit the graphic presentation of selected software applications by selectively relocating the viewport within the electronic work space.

Abstract: Up to date television programming information along with a commercial is provided for a viewer of television independent of the viewer's television set. Such is accomplished by a radio either AM or FM which broadcasts first and second subcarrier signals carrying respectively a commercial and up to date television program information. The commercial and up to date television program information repeats after given set time periods, the later being updated every one-half hour. A viewer need only operate a specially designed radio receiver at a convenient location anytime he wishes to know which programs are coming up on his television set. The receiver is designed so that it will always play the broadcast commercial before the television program so that the system can be appropriately financed with no cost to the viewer.

Abstract: A roller skate wheel has an inner body portion for securement to the axle of the roller skate and an outer body rotatable about the inner body on appropriate bearings. A permanent magnet is secured to the inner body in flux coupling relationship with electrically conducting windings carried on the outer body. When the wheel rotates, electricity is generated on the windings and used to energize light emitting diodes carried on the outer body of the wheels. The generated electricity is of the alternating type and since the light emitting diodes are essentially polarity-sensitive, they will be energized on only positive half cycles of the current to thereby provide a flashing or stroboscopic effect.

Abstract: A V-type internal combustion engine has left and right exhaust manifolds interconnected by an exhaust crossover passage and connected by left and right exhaust pipes respectively to a main catalytic converter. The left exhaust pipe has an auxiliary catalytic converter, while the right exhaust pipe has a valve which is closed during engine warm-up. The valve diverts exhaust gases from the right exhaust manifold through the crossover passage to the left exhaust manifold for flow through the auxiliary converter and the left exhaust pipe to the main converter during warm-up and permits exhaust gases to flow directly from the right exhaust manifold to the main converter during normal operation. A pump delivers air into the right exhaust manifold for delivery through the auxiliary converter to the main converter during engine warm-up and for delivery directly to the main converter during normal operation, thus limiting oxidation in the auxiliary converter.

Abstract: An internal combustion engine having a cylinder head with integral intake manifold and a planar mounting face which is secured to the cylinder block and on which the exhaust manifold is also mounted. The head member incorporates an open bottomed mixture plenum closed by a heated wall of the exhaust manifold for supplying mixture heat. The plenum receives mixture through an inlet tube perforated to distribute recirculated exhaust gases from an annular chamber in the head. Mixture passes from the plenum through a pair of upwardly angled feeder passages to separate longitudinally aligned distribution passages feeding the intake ports of front and rear groups of cylinders. The head also incorporates an open topped secondary air gallery connected through distribution tubes with the exhaust ports and closed by an extended flange on the engine rocker cover through which air is supplied. The arrangement provides advantages in manufacturing and mixture distribution for improved operation.