Abstract: A system for optically combining two images that may be photographed with a camera as a single image. The system is specifically adapted to generate slides in which lettering or graphic designs may be superimposed over various background patterns.

Abstract: A sound responsive toy which seeks an emitted sound such as a child's voice, the toy includes control circuitry for activating an associated drive to turn and/or guide the toy toward the child's voice.

Abstract: This invention relates to an X-ray system including an ion chamber for monitoring and controlling the amount of radiation delivered to the X-ray film.

Abstract: A method and apparatus for a universal winding arbor including an arbor core adapted for use with a plurality of differently sized arbor blocks in winding transformers of different sizes. Each differently sized arbor block may be formed in a unique mold which includes a vertically adjustable side and horizontally adjustable side to vary the thickness and width respectively. The arbor core is centered within the mold and a liquid resin is allowed to cure in the mold to form the winding arbor.

Abstract: A system for sensing and monitoring the injection of fuel into a fuel injection type engine, such as a diesel engine, including a piezoelectric transducer comprising a piezoelectric collar mounted on the fuel line to sense the change in dimensions of the fuel line due to the surge of pressure created in the fuel line as the fuel is injected through the line into the engine.

Abstract: An aircraft flap sensing and control circuit for sensing and controlling the position of the flaps and for sensing and comparing the instantaneous movement and position of the flaps mounted on opposite wings of the aircraft.

Abstract: A digital X-ray system for measuring X-ray beam quality such as the peak voltage applied to the X-ray tube and/or half value layer of the X-ray beam.

Abstract: A machine is provided by the present invention for the improved handling, transfer, cutting and stacking of distinct sheets of diaphanous plastic material from a continuous roll or web, each separate sheet being perforated with an expansible slit pattern for packaging articles of produce requiring ventilation.

Abstract: A flexible lighting strip including a circuit of modular construction formed thereon, light emitting diodes connected to said circuit, and the circuit being connectable to control circuitry which provides selected energization to said circuit and the light emitting diodes for effecting a moving light display.

Abstract: A high fidelity hearing aid is disclosed for providing high quality sound and is primarily directed to those users whose hearing loss is such that they need some amplification for low level signals, but do not need amplification for high level signals.

Abstract: A two-way voice controlled communication system for use with a protective helmet. The communication system includes a transmitting circuit which is normally off, and which is voice actuated, and a receiving circuit which is normally on. The transmitting circuit includes a microphone and an electronic switch which turns the transmitting circuit on and the receiving circuit off in response to the presence of an output from the microphone, and turns the transmitting circuit off and the receiving circuit on substantially immediately in response to the absence of a microphone output. Thus the system approximates two-way real-time communication by permitting one user of the system to interrupt the speech of another user of the system. The system is designed primarily for far field communication, that is, omnidirectional communication where the spatial positioning of one communication system relative to a second communication system is essentially independent of the distance between the two systems.

Abstract: A disposable drape for a surgical overhead table; the drape is liquid-proof and covers the entire surface of the associated table. Also, the drape is of a construction which will prevent the passage of any bacteria through the surface area of the drape.

Abstract: The present invention relates to an acoustic transducer including an improved electret assembly mounted in an improved case and having an electronic amplifier circuit comprising FET transistors. The electronic circuit further includes means for protecting the FET transistors against current surges.

Abstract: A method and apparatus for a universal winding arbor including an arbor core adapted for use with a plurality of differently sized arbor blocks in winding transformers of different sizes. Each differently sized arbor block may be formed in a unique mold which includes a vertically adjustable side and horizontally adjustable side to vary the thickness and width respectively. The arbor core is centered within the mold and a liquid resin is allowed to cure in the mold to form the winding arbor.

Abstract: A method and apparatus for a metal frame for windows, doors and the like which provides a thermal break between the interior and exterior surfaces of the frame. The frame comprises an interior frame portion which is coupled to an exterior frame portion through an insulated joint. Separating and insulating the interior frame portion from the exterior frame portion is a woven or matted fabric. Keeping the fabric in place and mechanically bonding the interior frame portion to the exterior frame portion is a resin which saturates the fabric between the two frame portions and is cured. The solid resin thereby obtained maintains the spaced distance of the two formed portions while securing them together to form a rigid unitary frame which is thermally non-conductive.

Abstract: A space travel game with game board having a primary path of movement and auxiliary paths connected with the primary path. A spinner apparatus is divided into numbered pie-shaped wedges of alternating colors and controls the amount and direction of travel. The paths comprise interconnected series of blocks, the blocks being grouped into alternating series of different colors. The pointer of the spinner indicates the number of blocks to be traveled and the color of the path to be taken upon reaching an intersection of a primary path with an auxiliary path. Game pieces shaped in the form of spaceships, different groups of cards, and a separate chance control device are involved in the playing of the game.

Abstract: A strip switch assembly or switch array formed in a flat configuration with minimal depth and of relatively small size wherein the array is formed of a number of individual switches and the switches are formed of components used in common, and wherein the number of components in the array effectively revolves itself into less than one component per switch.

Abstract: A system for controlling the operation of the starter for X-ray tubes and more specifically the acceleration and operation of the rotating anodes of the X-ray tubes in accordance with any one of several X-ray exposure functions to be performed. The system includes D.C. braking controls, means to prevent X-ray exposure during the acceleration and deceleration periods, and means for assuring that one operating sequence is terminated before a succeeding operating sequence is initiated.

Abstract: The present invention relates to an acoustic transducer including an improved electret assembly mounted in an improved case and having an electronic amplifier circuit comprising FET transistors. The electronic circuit further includes means for protecting the FET transistors against current surges.

Abstract: A device for automatically supplying water to house plants over a prolonged period of time including a body for the storage of water and an elongated neck with a small hole in its side attached to the body. When inverted the neck is stuck into the potting soil of a house plant so the body rests on the soil, water slowly seeps out into the soil. When in an upright position with holes made in the body portion, and the device is hung by appropriate means, it may also serve as a rooting device when plant cuttings are inserted into the water in the body through the formed holes.