Abstract: A display for a flexible head toothbrush includes a first representation of a first bristled portion of a toothbrush head and a second representation of a second bristled portion of a toothbrush head. The first representation is interconnected with the second representation by a mechanical linkage. The mechanical linkage provides oscillatory pivotal movement of the second representation with respect to the first representation. The mechanical linkage is preferably an electromagnet motor, such as a self-starting swinging apparatus, powered by a solar cell. The second representation preferably depicts a tip end of the toothbrush head, while the first representation depicts a remaining portion of the toothbrush head. The display may also include a third representation of at least a portion of a toothbrush handle extending from the first representation. Further, the display may include a support having shelves that hold actual toothbrushes.

Abstract: A protective garment includes an abrasion-resistant fabric attached to an inside of the garment, and having a face side residing adjacent the garment and a back side for residing nearest the wearer. The fabric includes a body yarn, and an elastic yarn incorporated with the body yarn. A high performance yarn is incorporated with the body yarn and the elastic yarn, and terried to form loops extending from the face side of the fabric adjacent the garment. The high performance yarn has a tensile strength of at least 7 grams per denier.

Abstract: A gas turbine engine includes a compressor joined to a turbine by a core rotor, with a combustor disposed therebetween for receiving compressed air from the compressor and fuel through a valve for producing combustion gas discharged to the turbine. A speed sensor measures speed of the core rotor, and a pressure sensor measures pressure at an inlet to the compressor. A controller is operatively joined to the sensors and the fuel valve and is configured for limiting fuel flow to the combustor in response to core acceleration rate and compressor inlet pressure to limit transient temperature of the combustor discharge combustion gas.

Abstract: A gas turbine engine includes a controller configured for controlling combustor lean flameout. The engine includes a compressor joined to a turbine by a core rotor, with a combustor disposed therebetween for receiving compressed air and fuel for generating combustion gas discharged to the turbine. The controller is configured for reducing fuel flow to the combustor in response to speed of the core rotor and pressure of compressed air entering the combustor to decelerate the core rotor while preventing lean flameout in the combustor.

Abstract: A method and system are provided to bias a control subsystem of a gas turbine engine having a fan and compressor. The method includes the steps of measuring an operating parameter of the engine and differentiating this parameter over time to obtain a derivative thereof. A bias signal is generated in a predetermined bias schedule in response to the parameter derivative, and provided to the control subsystem for biasing the subsystem. The bias signal has a zero value for values of the parameter derivative from zero to a first value thereof at a first time. The bias signal has a maximum value for values of the parameter derivative between second and third values thereof corresponding with second and third times. And, the bias signal returns to a value of zero after a fourth time greater than the third time.

Abstract: A video signal recorder/player device, e.g. a video tape recorder, is adapted to select a playback channel to be any one of a plurality of UHF television channels. A microcontroller in the device sets a UHF tuner in the device to each UHF channel in turn and tests the signal level in the channel. A free channel containing substantially no signals is selected, when found, as the playback channel, only when the immediately adjacent lower channel does not contain a wanted broadcast television transmission. Once a selection is made, the microcontroller sets the playback channel frequency to that of the selected channel.

Abstract: A signal distribution cable network in which a plurality of information channels are defined by respective carrier frequencies and serve a plurality of local signal sources (SS1, SS2, SS3) and signal destination receivers (SR1, SR2, SR3) connected to the network. The network has a channel allocation controller (CT) which operates on request to allocate temporarily an unused channel for transporting signals from a local signal source (SS1, SS2, SS3) to a signal destination receiver (SR1, SR2, SR3). The controller (CT) transmits tuning signals to the local signal source and the signal destination receiver to tune them to the carrier frequency of the allocated channel. The channel allocation excludes channels which normally carry signals from external signal sources.

Abstract: A signal distribution cable network system in which frequency division multiplexing is employed to provide a plurality of information channels. A channel allocation controller (CT) allocates free channels on request for the transport of signals from a local signal source (SS1, SS2, SS3) to a signal destination receiver (SR1, SR2, SR3) connected to the network. The local signal source includes a programmable modulator (CFS, VCO, MOD) which is set by the channel controller (CT) to operate at the carrier frequency of the selected channel. The signal level of the signals transmitted by the local signal source is measured in the controller and adjusted to compensate for signal attenuation by a command signal sent by the controller to the programmable modulator in the local signal source.