Abstract: This invention is directed to a device for implanting an artificial endosseous element of ceramics in the field of dentistry, oral surgery and orthopedics, comprising an implant screw pin and a flange member or flange members. The present invention provides an implant element which is adapted for uses of prosthesis even in cases where a hole remains after extraction of a tooth or the bone tissues are unhealthy, and presents an implant pin which is adapted to be securely held by means of the flange member to the tissue of the jaw bone. This invention is also directed to an implant method for use of such device.

Abstract: In this monophonic pedal or truncated decay system, depression of a new pedal key immediately truncates tone production of a previously played, decaying note. If two notes are played simultaneously, both will sound until one is released, whereupon that tone will be truncated immediately without decay.The inventive system operates with a time-shared electronic musical instrument wherein selected keys are assigned to respective time slots in a repetitive timing interval. During each such interval, a first flip-flop is set by occurrence of the first assigned pedal key. A second flip-flop cooperates with the first flip-flop, and is set during each time interval by occurrence of a second assigned pedal key. A third flip-flop is set at the end of each timing interval to copy the contents of the second flip-flop. The third flip-flop thus provides, during the subsequent timing interval, a signal indicating that two or more pedal keys are being played.

Abstract: A simple, two-part adjustable spray device is disclosed, the device consisting of a tubular member within which is a cylindrical insert member. At its inner end, the insert member includes a chamber in selective communication with both the inlet portion of the tubular member and a longitudinal channel formed in the internal wall of the outlet portion of the tubular member. The side wall of the insert member defining the chamber is sufficiently flexible to be distended by the pressure of liquid within the chamber into a sealing engagement with the interior side wall of the tubular member. By rotationally adjusting the insert member, the chamber may be brought into selective communication with the longitudinal channel to allow a varying volume of liquid to pass from the inlet to the outlet and a spray of liquid to be emitted through a profiled aperture.

Abstract: There is disclosed herein a spout assembly, such as a tub spout or the like for use in a fluid system employing a diverter valve and shower head or the like. Most of the parts of the assembly may be made of plastic, and the assembly includes a spout body having inlet and outlet chambers and a partition with an aperture therethrough separating the two chambers. A plunger is reciprocally mounted in the outlet chamber, and a portion thereof cooperates with a flexible diaphragm mounted in the aperture in the partition for terminating the flow of water through the spout assembly to thereby cause diverter valve operation, and flow through a shower head or the like in a conventional manner. A lift button is coupled with the plunger by a stem extending into the outlet chamber through a portion of the body. The plunger may include flow directing vanes for directing the flow of fluid from the outlet chamber in a desired manner.

Abstract: An electronic musical instrument is of a type wherein an envelope to be imparted to a musical tone is stored in a memory as its sampled values and sequentially read out to constitute an envelope shape. A key depression causes the read-out of the memory.The instrument is improved to provide a rich sound effect of legato performance by successively and smoothly shifting the tone of the former key to that of the latter key while maintaining a predetermined constant tone volume. This legato effect can be carried out by successively maintaining the sustain level of the musical tone envelope from the tone of the former key shifted to the latter key. The musical tone envelope is read from the envelope memory by an address which is shifted by a clock pulse.

Abstract: Sliding overtone generation is implemented in a computor organ of the type disclosed in U.S. Pat. No. 3,809,786. In such an instrument, the sampled amplitudes of a musical waveshape are computed in real time by individually calculating the amplitude contributions of the Fourier components constituting the waveshape. In accordance with the present invention, one or more of these Fourier components is evaluated at a frequency which varies with time. The resultant overtone "slides" up or down in frequency between preselected limits at a controllable rate of "slide speed". Unusual tonal effects are achieved.

Abstract: The present invention provides an oil detecting element capable of accurately detecting oil floating on water. The oil detecting element comprises a water-repellent, oil-passing filtering member for preventing water coming into the element. Oil can be detected by detecting change in electric resistance of a conductive particle layer due to its contact with oil arriving through the member. According to an embodiment of the invention, the water-repellent, oil-passing filtering member is impregnated with a material which is toxic to water life such as algae and shells to prevent settling of these water life on the surface of the element and thereby to prolong the life of the element. Examples of an oil detector incorporating the oil detecting element and including an electrical circuit which detects change in electric resistance of the element upon its contact with oil and actuates a suitable alarming device such as a buzzer are described.

Abstract: In this electronic musical instrument, two separate tone generators of different type each produce a tone corresponding to an actuated key switch. Advantageously, one of the tone generators is of the Fourier synthesis type. In the other tone generator, a source waveshape having abundant harmonic components is processed by a tone color and volume control system which modifies the frequency spectrum and amplitude of the source waveshape in a time variant manner. The two generated tones are combined to produce the desired musical note.Actuation of each key switch produces, in an assigned time slot, frequency information corresponding to the selected note, and designating the phase angle between successive sample points to be read from a waveshape memory. In the Fourier synthesis type generator, plural waveshape memories store harmonically related sinusoids, all of which are accessed simultaneously and weighted by harmonic coefficients to produce the first tone.

Abstract: An electronic musical instrument wherein, by merely depressing one key, the tone pitch corresponding to that key varies periodically with cyclic repetition at a specific rate. The pitch variation is made on the octave basis by periodically shifting digits of binary signals of plural bits which designate readout addresses of a musical tone waveform. Various patterns of the pitch variation can be obtained by suitably setting a pattern of shifting of the digits of the binary signals.

Abstract: A railless walkway for blind and visually handicapped persons is constructed using foot plates fastened to the ground. By feeling humps made into the foot plates, the blind are guided along walkways without the use of rails or canes. Variations in the shape and/or number of humps provide additional information as to walkway directions, such as turns, steps, stairs, rest areas, and the like. The foot plates are fabricated out of permanent, solid material and are either incorporated in the walkway during its construction or are fastened permanently to the walkway if added later.

Abstract: A restaurant booth seat having a unique shape and construction is disclosed. The seat has an exterior skin made of a hard plastic material and a substantially rigid plastic foam core. The seat comprises a back support member coupled to a separate base member. The base member is tapered from the front thereof towards the rear such that liquids, crumbs and the like are encouraged toward the rear of the base member. A grooved area extends into the base member along the width thereof adjacent the back support member such that the crumbs and liquids in the grooved area are rendered easily removable. By the use of the restaurant booth seat of the present invention, cleanup of such seat is made substantially easier than the seats of the prior art. Moreover, the booth seat of the present invention is durable yet provides the user with sufficient comfort.

Abstract: An electronic musical instrument of a type wherein a plurality of systems are provided each system comprising memories storing respective harmonic component waveshapes which are read at the same reading rate and the read out harmonic waveshapes are suitably mixed to obtain a desired musical tone. Each system also comprises a circuit for controlling the envelope of the waveshapes read from the memories. In the first system, the envelope control is made in such a manner that the envelope will rise upon depression of a key, thereafter maintain a constant level as long as the key is kept depressed and decay upon release of the depressed key. In the second system, the envelope is controlled so that the envelope will rise in a short time and immediately decay thereafter. The respective harmonic waveshapes thus controlled in envelope in the respective systems are then suitably selected and mixed together.

Abstract: A scuba regulator second stage utilizes pneumatic amplification to achieve very low inhalation effort. The regulator includes (a) a main flow valve consisting of a poppet moveable within a valve housing inside the regulator body, (b) a pilot valve mounted within and carried by the main valve poppet, and (c) a pressure sensing diaphragm linked to the pilot valve.During inhalation, the diaphragm and linkage open the pilot valve to admit gas at supply pressure into a space, between the poppet and a closed end of the housing. This gas displaces the poppet, thereby opening the main flow valve and supplying gas to the diver. Pneumatic amplification is achieved. The poppet displacement tends to close the pilot valve, so that the poppet-opening force is reduced. This feedback effect results in substantially linear relationship between inhalation demand and the amount of breathable gas supplied to the diver.

Abstract: A mandrel design for use in a machine which forms a toroid of a plastic material such as bagel dough, including a tapered plate having a wide end and a narrow end. The tapered plate is oriented so that the plastic material encounters the wide end of the tapered plate first. The wide end of the tapered plate gradually fairs into the shape of the underside of the mandrel such that the combination of the mandrel and tapered plate presents a smooth surface to the plastic material as it travels beneath the tapered plate and mandrel joint.

Abstract: An automatic pump speed controller for controlling and maintaining the strokes per minute of a down-hole oil well pump and providing signals on the surface indicating the actual strokes per minute of the pump. The automatic pump speed controller comprises a means for measuring the strokes per minute of the pump, and a means for adjusting the pump to correspond to a preselected stroke per minute value. The automatic pump speed controller also provides for a visual read out of the actual strokes per minute of the pump which enables an observer to obtain this information. In the present invention, pressure pulses from the pump are transmitted to the invented automatic pump controller on the surface and are monitored. If the pulses indicate that the pump is operating at a rate different than the preselected rate, the controller is adapted to automatically readjust the pump to conform to the preselected rate.

Abstract: A burner in the form of a flame jet drill bit engine for liquid fuels is disclosed. The burner has particular utility in a flame jet drill and comprises an axially elongated body with a combustion chamber disposed therein. At least one flame jet nozzle is disposed through the body adjacent the bottom so as to communicate with the reaction chamber. At least one set of water or other liquid jet nozzles is also disposed on the bottom of the body which produce a pulsating water jet at extremely high velocities. The flame jet nozzle and the water jet nozzles are arranged and configured on the bottom of the body so as to be substantially parallel to the axis of the body. By the use of the combination of flame jets and water jets, a cutting means is produced which can cut through a wide range of amorphous and sedimentary rocks.

Abstract: This electric switch structure provides within a rugged, hermetically sealed housing a set of insulated, moveable discs that may reciprocate relative to one another, the discs being interconnected and positioned by a set of parallel guide rods. One disc is held in a fixed position relative to the housing; the remaining portion of the disc set is movable from a position in which contacts on the adjacent faces of the discs are engaged to a position in which these contacts are disengaged. This movement is controlled by an external trip rod positioned to bear on the exterior of the housing, the trip rod being attached to the disc set by an interconnecting member and moveable between two stable positions, a first or extended position and a second or actuated position.

Abstract: A folding doll house which comprises an upper structure and a lower structure adapted to fold into and become a part of said upper structure. The upper structure has at least a top portion, a back portion and a side portion and the lower structure has a pair of lower side walls coupled to the upper structure at the lower side edges thereof and adapted to fold inwardly and upwardly toward the bottom of the upper structure and a lower back and floor portion coupled to the upper structure at the bottom rear edge thereof and adapted to fold inwardly to form the bottom and front of the upper structure. The upper structure may further include a bottom portion under which the lower side walls and a part of the lower back portion and floor portion may be folded and a front portion coupled to the top portion to form an outer front portion for the doll house.

Abstract: A tone generator for an electronic musical instrument. In the tone generator, a coincidence output is produced when contents of a counter which successively counts a clock pulse have amounted to a value representing a tone of a depressed key. The counter is reset by a reset pulse with delay of a predetermined clock time from the time when the coincidence output is produced.An example is disclosed in which an output of a desired period is statically produced by generating the reset pulse with delay of selected number of clock pulses with respect to the coincidence output. Also disclosed is another example in which desired signals among a plurality of delayed signals produced with delay of one or more clock pulses with respect to the coincidence output are dynamically selected for resetting the counter in response to an output of another counter which cyclically performs counting.

Abstract: An apparatus and method of manufacture of an inflatable tire supporting rim and spider apparatus wherein portions of the rim is cold worked into depressions formed in the spider, thereby forming an integral unit.