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| Number | Title | Issue Date |
| 4830153 | Method of manufacturing and product including a portfolio having wide opening top and concealed name tag The invention relates to a method of manufacturing reinforced leather portfolio having wide opening top and concealed name tag, the wide opening top of the portfolio is provided by a novel subassembly of sides and bottom in which the top of the side porti... | 05/16/1989 |
| 4417101 | Public telephone station traffic analyzing arrangement An arrangement for traffic analyzing for public telephone stations which are served from a telephone exchange. The exchange transmits charging pulses to the telephone stations through telephone subscriber's lines, when calls are requested from the telepho... | 11/22/1983 |
| 4406794 | External sludge collector for boiler bottom blowdown and automatic blowdown control initiated by conductivity probe within the boiler and method An improved electromagnetic boiler water conditioning apparatus and method for energy saving, comprising an electromagnetic water treatment unit combined with an external sludge collector attached to the boiler for boiler bottom blowdown by means of a sol... | 09/27/1983 |
| 4374406 | Lightweight attachment for solar cell array next to a fluorescent tube A lightweight attachment for a solar cell array in combination with spacing means for spacing the array consisting of a plurality of solar cells on a support next to a fluorescent tube to provide thereby a power package which is fitted with conductors to ... | 02/15/1983 |
| 4356919 | Hang hole device for display of package A hang hole device for display of a multiple hinged package which comprises a flat sheet cut at its forward edges to fit within the confined contour of the inner side walls and front wall of the package with the rear edge cut to form a projecting tab whos... | 11/02/1982 |
| 4355113 | Over the counter swab kit for self detection of gonorrhea in the male using saline ampule An over the counter swab kit for self detection of gonorrhea in the male using saline ampul. A method wherein a pledget in the form of fibrous material is impregnated with a compound which reacts with Neisseria gonorrhea to produce a color change. The ple... | 10/19/1982 |
| 4352281 | Method and apparatus for bending pipes A method and apparatus for bending straight pipe sections which are of predetermined length including cutting at a preset angle, bending, and calibrating to form a finished elbow.... | 10/05/1982 |
| 4347133 | Electromagnetic ground water conditioning system and sampling device for waste water and fermentation makeup water An electromagnetic ground water conditioning system and sampling device comprising a holding tank, a pump, filters and timers to regulate the time and duration of blowout of settled solids at the bottom of the tank. The electromagnetic water conditioning ... | 08/31/1982 |
| 4341352 | Method of coal washing at low speed pumping A method of coal washing at low speed pumping using a centrifugal cyclone of circular cross section having a bowl of diameter B and fitted with a vortex finder, a vortex finder sleeve, a dish, an orifice at the bottom and an inlet near the top in which a ... | 07/27/1982 |
| 4340670 | Method of using over the counter swab kit for self detection of gonorrhea in the male using tetramethyl chromogen ampul An over the counter swab kit for self detection of gonorrhea in the male using an ampul containing 1% N, N, N' N' tetramethyl-p- phenylenediamene or tetramethyl chromogen. The method of taking a sample is also shown in which the open end of a tube is fill... | 07/20/1982 |
| 4326481 | Urine collection procedure for cats and apparatus therefor Smooth plastic or rubber granular material is used as an aid in taking a urine sample from a cat or a member of the cat family. The urine sample is necessary in order to carry out a complete physical examination in veterinary medicine and is of special im... | 04/27/1982 |
| 4317010 | Remote monitoring system for remote locating and gain regulating of amplification circuits in data transmission line The remote monitoring system locates individually the pairs of intermediate amplification circuits in a remote location in the transmission line between a monitoring station and a monitored station in which circuit a fault diminishing amplification is to ... | 02/23/1982 |
| 4310821 | Spiralled printed inductance The printed inductance comprises at least a first conductive rectangular spiral having its geometric origin on the long midline of the rectangle and which is adapted to be folded at its midline while being supported by one of the faces of a flexible insul... | 01/12/1982 |
| 4309220 | Inorganic adhesive for assembling metallic components Adhesive composition which can be transformed into a metallo-ceramic cement by heat treatment. The binder for the composition is incorporated in the binder which sodium disilicate and the powdered metallic filler is composed of a mixture of aluminium-coat... | 01/05/1982 |
| 4309736 | Protective device for low-voltage lines A protective device protects low-voltage lines such as telephone lines of a cable. It is fitted to a cable connection head which comprises two junctions for connecting two conductive wires of each cable line to two conductive wires of a switching exchange... | 01/05/1982 |
| 4303825 | Portable electric heating device for thawing motor vehicle door locks A compact portable device energizable from a motor vehicle battery for thawing frozen motor vehicle door locks includes an electrically heated thawing stick sized for insertion into the keyhole of a frozen lock. The stick comprises a hollow metal body enc... | 12/01/1981 |
| 4302628 | Analog signal encrypting and decrypting system An encrypting and decrypting system employing analog signals in which delay lines are employed in both the encrypter and decrypter so that the initial analog signal which is received may be switched by switching means to a writer means where encrypting oc... | 11/24/1981 |
| 4302709 | Vibrating device with motionless frame Device for vibrationally deviating an optical beam. It includes a frame, a main mechanical resonator, an auxiliary mechanical resonator and vibration generator means. The main mechanical resonator is formed of an optical member such as a mirror and resili... | 11/24/1981 |
| 4300420 | Apparatus for cutting of sheet metal sheets and stacking the separated sheet metal sections The apparatus comprises a sheet metal shears at a cutting station which station is provided with a lifting table 13 which is vertically adjustable, is used for cutting off small sections of sheet metal from a sheet and also is used for stacking these sect... | 11/17/1981 |
| 4299149 | Apparatus for removing and stacking of sheet metal strips cut by a plate shear An Apparatus arranged behind the blades of a plate shear used for cutting sheet metal strips from a sheet metal plate to remove these strips from a sheet metal plate to remove these strips from the place behind the blades of the plate shear and to stack t... | 11/10/1981 |
| 4293735 | Nodal structure switching network Switching network unit formed of a plurality of N identical elementary nodal switching networks having addresses from O to (N-1). If N is chosen smaller than or equal to fp, f and p being two predetermined integers, each elementary nodal switch... | 10/06/1981 |
| 4292631 | Plasma matrix display unit The plasma matrix display unit comprises a plurality of cathodes perpendicular to a scan anode and to at least one display anode in a gastight enclosure. All the cathodes are positioned on a rear plate. A front plate is transparent at least at the level o... | 09/29/1981 |
| 4292649 | Composite video signal combining system The system combines first and second composite video signals into a resulting composite video signal. The first composite video signal represents a foreground scene having a first trichromatic moving picture region which envelopes a second trichromatic ba... | 09/29/1981 |
| 4291281 | Single mode double Michelson-type laser cavity resonator Cavity resonator arrangement for single mode laser. A double Michelson interferometer is substituted for one of the mirrors of a conventional Fabry-Perot interferometer. The positions of the three mirrors of this double Michelson interferometer are positi... | 09/22/1981 |
| 4288323 | Free flow non-corrosive water treatment device A unitary package for water treatment for attachment to a home hot water heater, boiler and the like which is adapted to be easily serviced and installed by the home owner. The water treatment device is constructed to provide free and unobstructed flow of... | 09/08/1981 |
| 4286639 | Thin wallet carrying case for a sanitary napkin or tampon A generally rectangular flexible flat wallet-like carrying case produced from a single sheet comprising an adjacent single sheet thickness front and back panel formed by folding one end of said single sheet over and adjacent a portion of the remainder of ... | 09/01/1981 |
| 4280765 | Optical fiber transfer function measuring system The transfer modulation measuring system is made up of an adjustable multifrequency generator, a laser emission circuit, an optical detector and a spectrum analyzer. The generator includes oscillators at predetermined frequencies belonging to a discrete f... | 07/28/1981 |
| 4275505 | Apparatus for checking dimensional tolerances Apparatus for detecting whether a measured dimension deviates from a nominal value by a predetermined increment. It comprises a feeler for following the surface of a component and a variable area window controlled by said feeler. Two pairs of photoelectri... | 06/30/1981 |
| 4272844 | Multiplex time division switching network unit of the time-time type Multiplex time division switching network unit comprising a plurality of P groups of N incoming and outgoing multiplex highways and P incoming and outgoing supermultiplex highways each formed of N multiplex highways and having 2aN time slots where a is th... | 06/09/1981 |
| 4264860 | Resistor measuring apparatus Apparatus for measuring a resistor in function of the amplitude of a direct current or the frequency and the amplitude of an alternating current. When the direct current equipment of this apparatus is used, the direct current signal flowing through the re... | 04/28/1981 |
| 4263482 | Public telephone station traffic analyzing arrangement An arrangement for traffic analysing for public telephone stations which are served from a telephone exchange. The exchange transmits charging pulses to the telephone stations through telephone subscriber's lines, when calls are requested from the telepho... | 04/21/1981 |
| 4260926 | Variable reluctance electric motor with progressively saturable poles A variable-reluctance electric motor with teeth of uniform pitch and poles whose number is a multiple of 4, which includes means for varying the magnetic permeability of the poles in dependance upon the relative positions of the poles and teeth from a zer... | 04/07/1981 |
| 4258434 | Bit-by-bit time-division digital switching network A bit-by-bit time-division digital switching network switches a plurality of incoming and outgoing isochronous digital data channels having rates which are different but sub-multiples of a given low rate. After phasing said incoming digital channels, bits... | 03/24/1981 |
| 4256365 | Optical fibre coupler Optical fibre coupler comprising at least three branches of the optical fibre type. A three-branch coupler comprises first and second optical fibres having two end frustoconical portions which are fastened to one another. The two frustoconical portions ar... | 03/17/1981 |
| 4257022 | Magnetostrictive rod filters Magnetostrictive rod filter whose attenuation versus frequency curve has a resonance as the conventional magnetostrictive rod filters but also a pole at a frequency near the resonance frequency. The filter comprises a freely vibrating magnetostrictive rod... | 03/17/1981 |
| 4255860 | Calibrating apparatus for inside and outside surfaces and alignment of pipe sections A calibrating unit for pipe sections is provided with calibrating jaw means and brake means, the jaw means measuring the inside and outside diameter of the pipe which is used in combination with feed rolls and tilting tables which move the pipe sections i... | 03/17/1981 |
| 4251120 | Screw fastened clamping neck attachment for an electrical hand operated drill A screw fastened clamping neck attachment for an electrical hand operated drill. The electrical motor of the drill is of the neckless type and has a short rotary shaft extending from the housing. The screw fastened clamping attachment is in the form of tw... | 02/17/1981 |
| 4244046 | Digital data transmission system providing multipoint communications A multipoint communication digital transmission system in which the main data transceiver of each multipoint communication can communicate simultaneously with a plurality of secondary transceivers and they can each, in turn, communicate with the main data... | 01/06/1981 |
| 4242965 | Carrier conveyor A carrier conveyor comprising a main runway and a secondary runway each including a chain to which are secured stationary lugs for continuously driving carriers on a runway. A first auxiliary way includes a chain which is arranged to be moved in synchroni... | 01/06/1981 |
| 4243006 | Rotary engine with lateral pistons A rotary internal combustion engine fitted with ignition means for the fuel air mixture delivered to the cylinders comprising a rotor having an output rotor shaft, a housing forming the outer shell of the engine which is fitted with intake and exhaust ope... | 01/06/1981 |
