Abstract: A time segment scrambling information encoding and decoding system wherein a multiplicity of scrambling algorithms are stored in a memory such as a ROM for use during transmission via a chosen medium and a multiplicity of correlated unscrambling algorithms are stored in memory for use during reception, the transmission equipment including apparatus which at different times substantially selects one of the scrambling algorithms to rely on in transmission until a different one of the scrambling algorithms is selected, the signals transmitted to receiving apparatus including finite-duration transmission of coordinating signal components by which the receiving and descrambling apparatus is caused to choose and rely on the coordinate algorithm there stored and to keep its restorative time-shifting of segments coordinated with the arrival of the time-shifted segments produced by the algorithm then being relied on at the transmitting point.

Abstract: Different from a standard digital display utilizing separate digits for seconds, minutes and hours, an electronic timepiece which uses tow digits composed of triads of red, green and yellow L.E.D.s. Each L.E.D. color is synchronically sequenced and each period of display is for one-third of a second. Each color L.E.D. is dedicated to a particular element of time, i.e., red represents second, yellow represents minutes and green represents hours.

Abstract: Cooking apparatus and method for preparing meats to suit individual tastes of different consumers. The meat is subjected to electric current heating to cook the meat and to radiant broiling to char its surface. The cooking current passing through the meat is regulated in response to a comparison of an input corresponding to the desired degree of cooking and an indication of the interior temperature of the meat as it is being cooked. The apparatus and method are particularly suited to handle effectively a variety of individual orders at substantially the same time.

Abstract: Cooking apparatus and method for preparing meats to suit individual tastes of different consumers. The meat is subjected to electric current heating to cook the meat and to radiant broiling to char its surface. The cooking current passing through the meat is regulated in response to a comparison of an input corresponding to the desired degree of cooking and an indication of the interior temperature of the meat as it is being cooked. The apparatus and method are particularly suited to handle effectively a variety of individual orders at substantially the same time.

Abstract: A method and system for measuring the oxygen carrying capacity of normal and abnormal hemoglobins and red cells under controlled pH, ionic strength, temperature and gas conditions is described. A blood sample and a physiologically balanced medium are placed in a cuvette and means are associated therewith for measuring the fractional saturation of the sample and the partial pressure of the oxygen (sometimes referred to as the oxygen tension) and provide output signals to an X-Y plotter for continuous recording. Preferably, means for maintaining the temperature of the medium and the blood sample is provided.

Abstract: Cooking apparatus for preparing meats to suit individual tastes of different consumers. The meat is subjected to electric current heating to cook the meat and to radiant broiling to char its surface. The cooking current passing through the meat is regulated in response to a comparison of an input corresponding to the desired degree of cooking and an indication of the interior temperature of the meat as it is being cooked. The apparatus are particularly suited to handle effectively a variety of individual orders at substantially the same time.

Abstract: A method of and apparatus for treating articles with heat and pressure is disclosed. Included in the apparatus is a furnace in which the articles are to be treated. The articles are placed in the furnace and, the furnace is evacuated, then filled with an inert gas the pressure and temperature of which is raised to predetermined levels. These predetermined levels are maintained for a period of time sufficient to effect the treatment, and, thereafter the inert gas is circulated to promote cooling of the gas and reduce the cooling time of the furnace and the article treated.

Abstract: Improved apparatus is disclosed for use in a magnetic suspension system for developing signals representative of the rate of displacement of a magnetically suspended body along one or more axes thereof for use in applying forces to the body to restore it to a desired stable position. Specifically there are provided a plurality of thin, closely-spaced discs of permanent magnet material affixed to the body and a plurality of conductive windings respectively cooperating with the magnetic fields produced by said magnets, pairs of said windings being interconnected so that currents induced therein by the fields of the magnets tend to reinforce each other and so that currents induced therein by stray fields tend to cancel. The resultant currents induced in the windings are representative of rate of displacement of the suspended body and may be combined with separately derived signals representative of displacement of the body for use in applying forces to the body to restore it to its desired stable position.

Abstract: A magnetically suspended rotor system is provided capable of operating at rotational speeds of 100,000 rpm or greater. The system comprises a rotor assembly and electric motor means for producing rotation of the assembly about an axis thereof. Electromagnetic means disposed near one end of the rotor is energized to exert an attractive force on the rotor to support it and preferably cooperates with permanent magnet means affixed to the rotor assembly near one (the upper) end thereof. An additional permanent magnet affixed to the rotor near the opposite (lower) end thereof cooperates with another permanent magnet disposed in juxtaposition thereto to exert an attractive force on the rotor tending to oppose the force exerted by electromagnetic means and produces a radial constraining force on the rotor tending to center the lower end of the rotor assembly.

Abstract: An efficient agitator system capable of high speed agitation without excessive vibration is provided by use of an inclined-axis portion on a motor drive shaft and providing a driven oscillatory member coupled thereto with high speed bearing means and arranged to be agitated but not rotated about the drive shaft axis. A highly durable plastic flexing member is provided, one end being fixed relative to the drive motor and the opposite end being attached to the driven oscillatory member to flex outward and inward as the shaft rotates while restraining the oscillatory member against rotation. Transmitted vibration is minimized by resilient mounting of the base and by providing intersection of the motor shaft axis and the inclined axis substantially centrally within the driven oscillatory member.

Abstract: A unitary cutting guide or gauge is provided for engaging the lower blade of a pair of shears and establishing any one of several pre-selected widths of cut, the gauge having a series of perforations at selected distances from the cloth edge guide portion so as to enable the user to select the width needed in a given instance.

Abstract: A magnetic suspension system employing magnetic force-applying means associated with a movable object, in which electrical signals which are a function of at least the rate of change of displacement of said object are applied to said force appliers to restore the object to a reference position whenever it is displaced therefrom by external forces, and in which electrical signals are also applied to said force appliers to produce permanent magnetization therein sufficient to maintain said object in its stable equilibrium position without the application of appreciable power in the absence of further external forces tending to displace it therefrom.

Abstract: A tennis racket or other striking implement for minimizing the shock imparted to the arm of the user, having a head or striking portion and a handle portion provided with a longitudinal slot lying in a plane substantially parallel to the striking face, said handle having a longitudinal hole in the end thereof remote from the striking head to accommodate an insert of resilient elastic material slightly larger than the hole diameter such as to produce spreading of the parts of the handle on either side of the slot when the insert is introduced into the hole, and a grip-enhancing binding on the handle applied in a manner to urge the two parts of the handle together and to compress the insert. Preferably the insert is of highly compressed rubber, but it may comprise natural or synthetic rubber. The invention may be applied to striking implements having handles made of wood as well as to those having tubular handles of metal, fiber glass or other materials.

Abstract: An electric motor system comprising a rotor including permanent magnets providing a plurality of correspondingly directed magnetic poles angularly displaced around said rotor, a stator comprising first and second windings adapted to cooperate with the poles of said rotor, each of said windings having transversely disposed conductive portions for intercepting the magnetic fields of said poles during rotation of said rotor, and an amplifier having its input coupled to said first winding so as to be energized by alternating voltage induced in said first winding during rotation of said rotor, and having its output coupled to said second winding to supply alternating current therethrough in synchronism with the interception of the magnetic fields of said poles by the transverse portions of said second winding.

Abstract: Polymeric mixtures of a cholesterol material and a monomer are disclosed which can advantageously be utilized for the construction of temperature indicating devices. Each polymeric composition exhibits a color at temperatures below a fixed threshold temperature and then appears colorless at the threshold temperature. This characteristic permits safe, compact, accurate, fast responsive, disposable temperature indicating and warning devices to be made.

Abstract: A magnetic suspension system for efficiently supporting a rotor of relatively large radius and high available moment of inertia includes concentric stator and rotor elements spaced apart by narrow gaps of relatively large diameter and very small axial extent. A pair of spaced discs in the stator are oppositely polarized by a permanent magnet, their peripheral magnetic field strength being selectively augmented or diminished in predetermined sectors by electromagnet windings thereon. The rotor includes narrow ring faces juxtaposed to said discs, a permanent magnetic polarization being provided between the narrow ring faces. Means are provided for varying the relative electromagnetic contributions in the different sectors to maintain stability of rotor positioning with minimized electric power. SUThe present invention relates to magnetic suspension systems.Magnetic suspension systems have been described in various prior patents including, inter alia, the following U.S.