"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 5501071 | Fixing arrangement for a thermal protection tile in a combustion chamber An arrangement for removably fixing a thermal protection tile on the inside of a combustion chamber wall is described. In one form the tile is provided with a fixing stud which is arranged to pass through a hole in the wall, and a split washer is inserted... | 03/26/1996 |
| 5501072 | Combined centrifugal and paddle-wheel side thruster for boats A thrust propulsion mechanism (10) for a boat (12) includes an outlet conduit (22) extending athwartships from a first outlet port (16) to a second outlet port (16') in the hull (18). A paddle-wheel impeller (24) is mounted within the hull for rotation ab... | 03/26/1996 |
| 5501073 | Ignition timing control system for internal combustion engines An internal combustion engine has an adsorber arranged in the exhaust passage for adsorbing unburnt components in exhaust gases, and an exhaust gas-purifying device arranged in the exhaust passage at a location downstream of the adsorber. The exhaust gas-... | 03/26/1996 |
| 5501074 | Exhaust gas purifying system An exhaust gas purifying system for an automobile engine is equipped with a metal zeolite catalytic converter for deoxidizing and purifying nitrogen oxides in exhaust gas. The system controls and compulsorily changes the air-fuel ratio of the fuel mixture... | 03/26/1996 |
| 5501075 | Elastic mounting apparatus for mounting a turbocharger housing on an internal combustion engine An elastic mounting apparatus for vibration-decoupled mounting of a housing on an internal combustion engine is disclosed. The mounting apparatus includes a clamping element with two spring elements arranged in a functionally serial relationship. The clam... | 03/26/1996 |
| 5501076 | Compact thermoelectric refrigerator and module A module for controlling the temperature within an enclosed structure is provided. The module comprises a thermoelectric assembly, a platform, and a panel. The thermoelectric assembly comprises a thermoelectric device with a first heat sink disposed on on... | 03/26/1996 |
| 5501077 | Thermoelectric water chiller A thermoelectric water-chiller system for cooling bottled water, and including a mixing valve which enables dispensing of chilled water, room-temperature water, or a mixture of chilled and room-temperature water. Components needing periodic cleaning are r... | 03/26/1996 |
| 5501078 | System and method for operating an integrated gas turbine and cryogenic air separation plant under turndown conditions A gas turbine/air separation apparatus operates at both a design point and a turndown point and includes a gas turbine for providing pressurized air and an air separation plant which receives the pressurized air. The air separation plant produces an oxyge... | 03/26/1996 |
| 5501079 | Apparatus and process for cryogenic separation of air and liquid distributor for a mass transfer column An apparatus and process for cryogenic separation of air are described which utilize a pipe distributor or a channel distributor for liquid distribution. The air separation apparatus contains a rectifying column having at least one section equipped with p... | 03/26/1996 |
| 5501080 | Self-contained cryogenic gas sampling apparatus and method Apparatus for obtaining a whole gas sample, composed of: a sample vessel having an inlet for receiving a gas sample; a controllable valve mounted for controllably opening and closing the inlet; a valve control coupled to the valve for opening and closing ... | 03/26/1996 |
| 5501081 | Auger type ice making machine An auger type ice making machine having an upright evaporator housing the interior of which is formed with a cylindrical freezing surface, an auger mounted for rotary movement within the evaporator housing and drivingly connected at its lower end with an ... | 03/26/1996 |
| 5501082 | Refrigeration purge and/or recovery apparatus An improved refrigerant recovery method and apparatus by which a refrigerant charged in a refrigerator is transferred into a refrigerant tank are disclosed. The apparatus is adapted to discharge almost all the refrigerant gas from the refrigerator and pur... | 03/26/1996 |
| 5501083 | Control apparatus and method for an air conditioner compressor A compressor of a refrigeration cycle is normally driven by a commercial power source. During a power failure, the compressor is driven by an auxiliary solar power source, wherein the compressor is initially driven at a minimum frequency for a delay perio... | 03/26/1996 |
| 5501084 | Air sterilizer and deodorizer for a refrigerator A refrigerator includes a freezing chamber and a refrigerating chamber located beneath the freezing chamber and separated therefrom by a partition. An evaporator is disposed in the partition for cooling air received from the freezing and refrigerating cha... | 03/26/1996 |
| 5501085 | Fabric holding-down mechanism for double knit machines A fabric holding-down sinker for a double knit machine to stop the knitted fabric from being lifted during the raising stitch of the cylinder needles. A series of such presser sinkers are reciprocated radially relative to the cylinder needles, each presse... | 03/26/1996 |
| 5501086 | Security device A security device for personal property at a beach includes two rods of a particular construction to permit ready mounting in loose soil or sand. A bar is formed to be attached readily between the two rods, so that neither rod can be turned to remove. A c... | 03/26/1996 |
| 5501087 | Rotary locking cylinder for a safety lock A rotary locking cylinder for a safety lock has a housing and a crosspiece. A recess is incorporated in the crosspiece from the top, a locking element being inserted into this recess. The recess connects an upper outer side of the crosspiece with a transv... | 03/26/1996 |
| 5501088 | Exhaust gas discharge system for a gas engine heat pump A heat pump system having an indoor unit and an outdoor unit, each unit having a refrigerant coil, a compressor and an engine forming a part of the outdoor unit and situated in an enclosure forming a part of an outdoor unit housing, a fan mechanism being ... | 03/26/1996 |
| 5501089 | Key fob and attachment A key fob includes at least one dome with a display surface and a flange secured in a fob. The fob is sewn in a pattern around or through the flange or openings therethrough. The fob may also be formed by placing display domes within an outer rim and seal... | 03/26/1996 |
| 5501090 | Flexible housing for conventional keys or for keys of a special kind Housing (1, 20) for lodging conventional flat keys or keys of a special kind (2, 2a, 2b'-2b", 2c, 2d), in a safe but removable way. The laminar housing (1, 20) is realized by elastically flexible plastic material s of a type and form like a rectangular "c... | 03/26/1996 |
| 5501091 | Method and apparatus for elongating metal tubes by means of a mandrel mill In a method of elongating a metal tube by means of a mandrel mill, a tapered mandrel bar is inserted into a hollow piece and the feeding speed of the mandrel bar is controlled so as to change the length by which the mandrel bar projects beyond the deliver... | 03/26/1996 |
| 5501092 | Die-punch machine A die-punch machine capable of directly supplying a machining oil to an end section of a punch and to a workpiece to be machined. A first member holds the punch, and a second member is capable of relatively moving to and away from the first member. A die ... | 03/26/1996 |
| 5501093 | Procedure and apparatus for forming a rectangular collar at the end of a pipe A procedure and an apparatus for forming a rectangular collar at the end of a pipe (34) by shaping it includes a forming element (1) which is moved in the axial direction of the pipe towards the pipe and rotated along the interior surface of the pipe end ... | 03/26/1996 |
| 5501094 | Method for bending a metal thin plate In the configuration wherein a metal thin plate is pressed by dies 2 to a punch 1 having unload channels 1b and 1c which elongates from one end of the punch 1 to the position corresponding to a tab-bent portion 60a of a workpiece 60, the edge portions of ... | 03/26/1996 |
| 5501095 | Bending press A bending press has a drive mechanism for effecting vertical movement of a bending tool in a bending line, a drive actuating device, and a locking mechanism for the actuating device. A stop assembly behind the bending line includes a rail, a rail drive me... | 03/26/1996 |
| 5501096 | Calibration method for determining and compensating differences of measuring forces in different coordinate directions in a multi-coordinate scanning system A calibration method of determining and compensating differences of measuring forces in different coordinate directions in a measuring scanning system for use in a numerically controlled multi-coordinate measuring machine, which method includes the steps ... | 03/26/1996 |
| 5501097 | Portable device for measuring a coefficient of static friction A portable device for measuring a coefficient of static friction has a base plate, a voice coil motor having an output shaft, an actuator member fixed to the output shaft, a photosensor electrically connected to the actuator member, a cell electrically co... | 03/26/1996 |
| 5501098 | Acoustic analysis of gas mixtures The present invention provides an acoustic cell for determining the composition of gas mixtures. The acoustic gas composition analysis cell has transducers acoustically isolated from the cell body through the use of an acoustic isolation material position... | 03/26/1996 |
| 5501099 | Vapor density measurement system The relative amount of liquid and vapor flowing in a pipe is measured by mixing the vapor and liquid into a gaseous like single phase mixture and passing the mixture through a venturi constriction to accelerate it. The pressure drop across the venturi is ... | 03/26/1996 |
| 5501100 | Device for measuring the mass of fiber slivers A device for measuring the mass of fiber slivers contains an entry part for the fiber sliver to be measured and a measuring part adjoining the entry part. Arranged on the measuring part are two measuring members working on different measurement principles... | 03/26/1996 |
| 5501101 | Demonstration wind tunnel A portable wind tunnel features a tubular test section which has a constant cross-sectional area. The smaller end of a diffuser, which resembles a funnel, is attached to one end of the test section. The other end of the diffuser has a larger cross-section... | 03/26/1996 |
| 5501102 | Floatless gauge with resistive/conductive polymer A floatless liquid level gauge assembly utilizing polymeric resistive/conductive elements is provided which measures the liquid level of partially conductive or conductive liquids in a tank using a three terminal voltage divider network or a two terminal ... | 03/26/1996 |
| 5501103 | Two-port electromagnetic drive for a double-ended tuning fork An electromagnetically-excited silicon micromachined vibrating beam accelerometer includes a proof mass or pendulum attached to an outer casing by way of a pair of flexures defining a hinge axis HA. A double-ended tuning fork (DETF) is connected between t... | 03/26/1996 |
| 5501104 | Method of measuring the depth of full-cut dicing grooves by using an ultrasonic detector and a dicing apparatus for carrying out the same The present invention provides a method of measuring the depth of a dicing groove capable of measuring the depth of the groove with a high accuracy when the groove is cut in a full-cut mode, which method employs an ultrasonic detector which emits ultrason... | 03/26/1996 |
| 5501105 | Digital signal processing of encoder signals to detect resonances in rotating machines The present invention is a method and system for accurately analyzing shaft encoder signals from rotating machines. The invention reduces noise and other interferences in the encoder signals by novel means that yield an unprecedented power for extracting ... | 03/26/1996 |
| 5501106 | Inertia force flowmeter with pivotally supported vibrating conduit A mass flowmeter comprises at least one conduit supported by a frame structure in a relationship allowing an enhanced pivotal vibration about two mutually orthogonal pivot axes, an electromagnetic vibrator generating a primary pivotal vibration of the con... | 03/26/1996 |
| 5501107 | Torque tool A torque tool for tightening a nut or fastener of a work piece to a pre-determined torque level is presented. The torque tool includes a split housing having mounted therein a gear train for driving a hinged gear, a releasably mounted reaction tool and an... | 03/26/1996 |
| 5501108 | Testing device for wipper hooks Testing device for wipper hooks on vessels. The testing device comprises a pontoon to be positioned against the vessel on which the wipper hooks have to be tested. The pontoon can be displaced relative to the vessel with the help of winches. On the pontoo... | 03/26/1996 |
| 5501109 | Torsion torque detecting device, a slip detecting device, a road friction coefficient detecting device and a torsion torque detecting method A torsion torque detecting device includes a power unit rotation velocity detector for detecting a rotation velocity of a power unit for driving a vehicle, a power unit rotation acceleration calculator for calculating a rotation acceleration of the power ... | 03/26/1996 |
| 5501110 | Torsion measuring device for a rotating shaft Two magnetic field generators are located symmetrically to each other in a first plane perpendicular to a shaft, and two magnetic field detectors are immobilized in a second plane perpendicular to the shaft. The magnetic field detectors provide a signal p... | 03/26/1996 |