Abstract: A single screw, gate rotor machine used as a gas compressor in which compressible fluid is fed to the machine through a low pressure inlet and exhausted through a high pressure outlet and in which an effective seal between the screw and the casing at an end of the screw across which a pressure difference occurs is located in a clearance formed between the casing or a part stationary with the casing and a generally extending surface of the screw closely adjacent thereto.

Abstract: A program reading apparatus in a knitting machine including a movable reading head adapted to scan a program carrier having thereon patterning instructions for control of the pattern to be knitted on the machine. Means are provided therein for preventing rebound of the reading head upon arrival at or return to its starting position, such means being operated by the momentum of the reading head upon reading head arrival or return to momentarily arrest the reading head at the starting position.

Abstract: A disconnection indicating apparatus for automobiles which electrically detects a disconnection or failure of an automobile turn signal and automatically signals the failure by flashing the disconnected turn signal lamps at an increased flash frequency.

Abstract: A system for controlling vehicular four-wheel steering mechanisms, having means for varying the ratio of the steering angle of the rear wheels to that of the front wheels as a function of the vehicle speed to effect four-wheel steering in low-speed operations and substantially only front steering in high-speed operations of the vehicle.

Abstract: A method and apparatus for noninvasive, quantitative measurement of blood flow rate in a blood vessel includes a transducer array placed on the skin surface above the vessel of interest. The array is formed of transmitting and receiving elements for transmitting and receiving beams of ultrasonic energy. Pulsed ultrasonic energy is transmitted by the array into the body tissue and intercepts the flow in the blood vessel at a slant angle which is determined by electronically steering the transmitted beam, causing it to rotate through a predetermined angular change. The resulting Doppler frequency shifts of the received ultrasonic energy backscattered by moving particles of the blood flow associated with the angular orientation of the transmitted beam can then be measured. Through electronic range gating techniques, the Doppler frequency shifts at the determined slant angle are measured at various depths or ranges below the skin at different positions across the vessel cross-section.

Abstract: The camera comprises an emitting section and a receiving section which are both located on the surface of a portion of a cylinder. The receiving section consists of juxtaposed and parallel strips located in the central part of the portion of cylinder. The emitting section consists of two groups each constituted by a band of parallel strips which is placed on each side of the receiving section. Each emitter is constituted by a pair of strips having parallel sides each forming part of a directrix of the cylinder. Electronic means are provided for exciting the different emitting strips and collecting the signals received by the different receiving strips.

Abstract: In a bubble chip, increased spacing between a circuit overlay and a sheet of magnetic bubble material is provided at selected locations for particular circuit elements from which bubbles are to be deflected by magnetic repulsion. Differential spacing is achieved in one embodiment by means of a stratified spacing layer composed of the conventional nonmagnetic spacing layer plus a layer of nonmagnetic metal etched to form a mesa pattern which may include electrical control leads where necessary.

Abstract: An automatic integrated circuit time delay switch for use as a switch in circuit with an external electrical device and an external electrical source. The switch operates on a programmed 24-hour time cycle that is defined by the initial application of power to the switch and a switch delay time that can either be preset at the factory or independently selected by the user. The application of power automatically sets the time delay switch in an initial state and starts the timing of the switch cycle. After a specified delay time, the switch automatically changes state and remains in this state until 24 hours after the initial application of power to the invention, at which time the switch is returned to its initial state. This sequence of events is repeated on a 24 hour cycle until power to the switch is cut off.

Abstract: Disclosed is a method and apparatus for forming hollow and cylindrical ingots of amorphous or fused silica and other ingot materials. The ingot is formed from a melt on a deposition surface which is lowered as the ingot is formed at a rate which maintains a constant distance between the deposition surface and a heat source vertically positioned above same. The melt is shaped into a vertical cylinder by at least one forming tool which is a roller member rotatable about a vertical axis. In a preferred embodiment the fixed distance from the heat source is maintained with the aid of the laser beam.

Abstract: Device for the inspection of tubes by ultrasonics comprising a probe constituted by an ultrasonic transducer fixed to a mirror which receives the ultrasonic wave emitted by the transducer and centered on the axis of the probe, means for moving the probe within the tube to be inspected and means for detecting the ultrasonic echos reflected by the tube, wherein it also comprises means for introducing an acoustic coupling liquid into the volume between the tube, transducer and mirror when the probe penetrates the tube to be inspected and for discharging said liquid when the probe leaves the tube, said means substantially comprising a flexible pocket reservoir filled with liquid and placed in the lower part of the probe and connected to the volume to be supplied with liquid, whereby said pocket is flattened when it penetrates the tube to be inspected following the probe, which has the effect of expelling part of the liquid contained therein in the direction of said volume, the said liquid returning by gravity int

Abstract: A digital frequency display device includes a counter for counting a frequency to be displayed, a latch circuit for temporarily storing a plurality of digit signals from the counter and for outputting the digit signals in response to the latch pulses, a decoder for decoding the digit signals from the latch circuit into another coding system, a display section for visually displaying the digit signals decoded from the decoder, a gate for preventing the latch pulses from reaching the latch circuit at undesired times and a digit eraser for erasing any one of the digits of the numerals representing the frequency displayed when the latch pulses feeding to the latch circuit is blocked by the gate means.

Abstract: In an electrophotographic apparatus, there is disclosed a developing device and a rinsing device which use an improved roller. The roller comprises a stationary magnetic member including a plurality of magnetic poles, a non-magnetic rotatable member provided around the magnetic member so as to rotate along the outer periphery of the magnetic member, and a magnetic brush of magnetic particles formed on the outer surface of the rotatable member. By rotation of the rotatable member, the magnetic brush, which is imbued with a developing or rinsing liquid, will feed the liquid to the developing section or the rinsing section.

Abstract: A pick-up cartridge has a plate-like first magnet magnetized thicknesswise and having a central through hole through which extends a cantilever having on one end a reproducing stylus and on the other end a disc-shaped armature of a highly permeable material, the first magnet being adjacent to the armature. The armature is supported by a damper so as to be vibratable with vibration of the cantilever. At least a pair of spaced coil-carrying pole pieces have their one ends located in the vicinity of and slightly spaced radially from the armature, the other ends of the pole pieces being connected to one polarity side of a second magnet magnetized thicknesswise. The first and second magnets have the same kind of polarity oriented in the same direction. A shield casing has its bottom connected to the other polarity side of the second magnet and disposed to cover the pole pieces and armature, the shield casing having its brim positioned adjacent to the first magnet in peripherally spaced relation.

Abstract: A variable stroke piston engine in which power developed by piston reciprocation is transmitted to a cylindrical nutating member journaled on its exterior to a rotatable support connected to a second shaft concentric with the first shaft, the nutating member having an internal surface in frictional engagement with a pair of oppositely convergent cone-like members keyed for rotation with the first shaft. The nutating member is disposed on an axis inclined with respect to the axis of the first shaft at an angle which may be adjusted to vary simultaneously piston stroke distance and rotational speed of the first shaft without changing the rotational speed of the second shaft for a given frequency of piston reciprocation. The first and second shafts are connected respectively to each of two inputs of an epicyclic gear train having an output planet gear carrier connected to an engine output shaft.

Abstract: A seat structure includes a stationary base member fixed to the vehicle, a movable support member slidable on the stationary base member for carrying a seat cushion with a tiltable set back, seat position memorizing means, seat locking means for locking the movable support member to the stationary base member, biasing means for moving the movable support member in the forward direction of the vehicle when the seat locking means is disengaged, and actuating means for actuating the seat locking means in association with the seat position memorizing means in response to the tilting movements of the seat back.

Abstract: A polyester film is disclosed which comprises a polyester mainly consisting of polyethylene terephthalate and an additive amount of granular calcium terephthalate anhydride particles having a specific volume shape factor. The average particle diameter and additive amount of the granular calcium terephthalate anhydride particles may be controlled so that the film is particularly suitable as a metallized film or a condenser film.

Abstract: An image transfer complementary apparatus for an electrophotographic copying machine of the type which transfers with the use of an electrode a developed toner image onto the surface of a support material, comprising a transfer sheet depressing member in the form of a roller or a plate which forcibly depresses the transfer sheet onto the surface of a photosensitive recording element to permit a more complete and better transfer of the toner image onto the transfer sheet.

Abstract: An apparatus for producing a uniform textile fiber sliver which is removed from a sliver supply device, for instance a card, and taken-up by a driven take-up or receiving device, wherein the fiber sliver removed from the sliver supply device is guided through a regulation drafting arrangement having a pair of measuring rolls and a driven pair of drafting rolls. One roll of the measuring roll pair is driven by the sliver supply device, and the other measuring roll is deflected as a function of a change in thickness of the fiber sliver traveling through the measuring rolls. The drive speed of the pair of drafting rolls and the receiving or take-up device is regulated as a function of the deflection of said other measuring roll, and the drive speed of the take-up device additionally is regulated as a function of the length of the fiber band between the pair of drafting rolls and the take-up device.

Abstract: Steam is injected into water to regenerate asphalt waste which is heated in the water to a predetermined temperature. Such heated asphalt waste is mechanically subdivided in the water into aggregate grains each having its surface coated with a thin asphalt film.

Abstract: A composite material is produced by placing a plurality of blocks of cast iron having high wear-resisting properties on the bottom of a mold, pouring into the mold a molten impact-resisting cast steel, allowing the molten steel to solidify and subjecting the solidified mold to a heat treatment. The composite material thus produced can exhibit both excellent wear- and impact-resisting properties.