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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 4971183 | Device for the automatic actuation of a friction clutch A device for automatic actuation of a friction clutch in the transmission line of a motor vehicle between an internal combustion engine and a change-speed gear, including a setting drive system for positioning a clutch releaser of the friction clutch in d... | 11/20/1990 |
| 4852419 | Control device, in particular for a motor-vehicle friction clutch The control device for a motor-vehicle friction clutch incorporates an electric motor which drives an output member in a substantially translational motion through a motion conversion crank gear unit designed as a worm gearing. This axis of a worm of the ... | 08/01/1989 |
| 4651686 | High-speed, port-controlled, two-stroke internal combustion engine with crankcase scavenging In the case of a high-speed, port-controlled two-stroke internal combustion engine with crankcase scavenging with at least one cylinder having in each case at least one suction duct with an inlet port, with in each case at least one outlet duct with an ou... | 03/24/1987 |
| 4624351 | Friction disc clutch for a motor vehicle The friction disc clutch for a motor vehicle driven by an internal combustion engine comprises a flywheel which is driven through a rotationally elastic element by the crankshaft of the internal combustion engine. The mass-spring system of the drive path ... | 11/25/1986 |
| 4591034 | Controllable drive for a movable releaser of a motor vehicle friction clutch The controllable drive for a movable releaser of a friction clutch which couples a transmission of a motor vehicle with its internal combustion engine comprises an electric motor and a force-transmission device converting the rotating movement of a drive-... | 05/27/1986 |
| 4509625 | Automatic friction clutches and controls therefor A controllable drive device moves an actuator of a motor vehicle friction clutch between a disengaged position and an engaged position. The drive device adjusts the position of the actuator in the slippage area of the clutch between a position at which to... | 04/09/1985 |
| 4501348 | Torsional oscillation damper with laterally displaceable damper member A torsional oscillation damper having first and second damping members mounted for rotation about a common rotational axis and a coupling member arranged in torque transmitting engagement therebetween, the coupling member being in fixed rotative engagemen... | 02/26/1985 |
| 4434879 | System for automatic actuation of a motor vehicle clutch A system for automatic actuation of the clutch of a motor vehicle wherein a pneumatic cylinder operates a normally engaged clutch to disengage the clutch when fluid pressure is applied to the pneumatic cylinder. A valve system operated through a control s... | 03/06/1984 |
| 4415619 | Workpiece palette A workpiece palette for transporting workpieces between stations includes a palette plate covered with an adhesive coating thicker than 0.35 mm. Preferably the coating has a thickness of between 0.5 and 2 mm. According to an embodiment, it is made of a po... | 11/15/1983 |
| 4355243 | Sinusoidal output generator In the disclosed device, a square wave generator drives a network composed of a parallel resonant circuit in series with a series resonant circuit. The resonant frequency of the parallel resonant circuit is substantially equal to the fundamental frequency... | 10/19/1982 |
| 4354082 | Cooking vessel for an induction cooking appliance Disclosed is a cooking vessel for use with an induction heating appliance. The vessel bottom is formed at least partly of a non-magnetic conductive layer which, when coupled to a coil of the appliance, detunes the appliance's resonant circuit. The layer h... | 10/12/1982 |
| 4317156 | Locking device A locking device includes a key having a locking code and a device for reading the locking code on the key and comparing it with a predetermined locking code. The key has a grip portion and an elongated information carrier extending outwardly from the gri... | 02/23/1982 |
| 4304647 | Arrangement for the purification of liquids by means of anodic oxidation An apparatus and method for the purification of liquids utilizing anodic oxidation wherein the electrodes are composed of an austenitic chromium-nickel-molybdenum steel which contains about 0.07% by weight carbon, more than about 17.0% by weight chromium,... | 12/08/1981 |
| 4280118 | Key-controlled electromagnetic operating mechanism for a lock and the like An operating mechanism for a lock and the like is operated by means of a key on which permanent magnets may be secured in available magnet positions of a fixed pattern of such positions, selected positions being occupied by magnets. A reading device inclu... | 07/21/1981 |
| 4274425 | Mouthpiece for a redox gas measuring device In a device for measuring redox gases, such as alcohol, in a person's breath, a disposable tubular mouthpiece forms an elongated flow passage and is displaceably securable in a measuring head. The mouthpiece has an opening at one end for blowing air into ... | 06/23/1981 |
| 4274080 | Magnetic security system A magnetic security system is controlled by a magnetic key having magnetic devices defining an operating code which may be operatively interposed relative to a sensing device which will read the code defined on the key and will activate an electrical cont... | 06/16/1981 |
| 4270414 | Ignition control for better gear shifting in an automotive vehicle Gear shifting in an automotive vehicle with internal combustion engine, particularly a motorcycle, is facilitated by a mechanism which automatically inactivates the ignition circuit in response to operation of a speed or gear shifting member, and again ac... | 06/02/1981 |
| 4268737 | Cordless inductive flat iron apparatus An apparatus in which a cordless flat iron is energized by a one or more high-frequency oscillators subjacent the normally horizontal work supporting surface of an associated ironing board. The sole plate of the iron consists of a thin layer of conductive... | 05/19/1981 |
| 4252596 | Method and arrangement for the production of thick layers of contact adhesive A laminate composed of a web of carrier material and a thick layer of contact adhesive thereon wherein the thick layer is composed of a series of thin layers of contact adhesive which are bonded together. Methods and apparatuses are disclosed for preparin... | 02/24/1981 |
| 4177494 | Circuit arrangement for producing an open magnetic field A magnetic field for coupling to a load is produced by means of apparatus having first and second amplifiers operating in phase opposition and connected to a first oscillating circuit for generating a first oscillating voltage of predetermined fundamental... | 12/04/1979 |
| 4140106 | Drunkometer A drunkometer in which the rate of airflow toward an alcohol vapor sensing device in an input channel is sensed mechanically or electrically, and a resulting flow signal is integrated. The direction of airflow in the input channel is also sensed either by... | 02/20/1979 |
| 4119520 | Water supply system A purification unit includes an electrolytic cell adapted to hold a body of water to be purified and provided with two electrically insulated electrodes, a pump supplying the water to be purified to the cell through a filter and driving purified water out... | 10/10/1978 |
| 4119517 | Apparatus for purifying water The casing of apparatus for purifying water encloses a chamber and is formed with two orifices spaced from the chamber in opposite directions and communicating with the same for gravity flow of the water to be purified from one of the orifices through the... | 10/10/1978 |
| 4098660 | Method of purifying water Water contaminated with pathogenic microorganisms is passed over a silver anode of an electrolyte cell in a layer 1 to 4 mm thick. The anode surface and the rate of water flow through the cell are related according to the equation F ࣙ c × V, wherein F ... | 07/04/1978 |
| 4097355 | Water sterilization apparatus The electrodes of a water purification cell are immersed in the water to be sterilized. The current through the cell is kept constant by varying the resistance of an emitter-collector circuit of a transistor connected in series with the cell to compensate... | 06/27/1978 |
| 4089768 | Battery operated water purification system An electrolytic water purification system operated from a battery includes an electrolytic cell which may purify water properly only when an applied voltage exceeds the battery output voltage. A power supply circuit energized by the battery furnishes the ... | 05/16/1978 |
| 4062754 | Apparatus for destroying microorganisms in an aqueous liquid by electrolytic oxidation The disinfecting effect of electric current passing between a contaminated aqueous liquid and an anode immersed in the liquid is enhanced by providing bipolar electrodes between the directly energized anode and cathode so that the flow channels for the li... | 12/13/1977 |
| 4061556 | Portable electrolytic apparatus for purifying drinking water The housing of an electrolytic purification apparatus defines a receiving chamber and an electrolytic cell. The receiving chamber communicates with a filling aperture at the top of the housing which is upwardly open in the operating position of the appara... | 12/06/1977 |
| 4048044 | Water-purifying apparatus In a water purification cell, a silver anode and a cathode have a spacing of 1 to 4 mm. The anode surface and the rate of water flow through the cell are related according to the equation F ࣙ c × V, wherein F is the anode surface area in cm2... | 09/13/1977 |
| 4048032 | Electrolytic purification of aqueous liquids in the presence of silver ions Silver ions are used more economically in the electrolytic purification of water by anodic oxidation when the water is electrolyzed between inert electrodes, and the silver ions are generated by separate silver anodes, than by employing the silver anodes ... | 09/13/1977 |
| 4035745 | Circuit for the production of an open alternating magnetic field In an induction energy transfer device comprising a static power conversion circuit for producing an alternating magnetic field of ultrasonic frequency of the type wherein the static power conversion circuit includes a parallel resonant circuit which comp... | 07/12/1977 |
| 4013554 | Method and apparatus for purifying water contaminated with anodically oxidizable organic matter Contaminated water is pumped through the anode compartment of an electrolytic cell which is separated from the cathode compartment by a diaphragm permeable to water and to inorganic ions. Particles of hydrophilic, electrically conductive, carbonaceous mat... | 03/22/1977 |
| 3975246 | Method of disinfecting water Anodic disinfection of drinking water by electric current is enhanced when the electrolytic cell is divided into anode and cathode compartments by a membrane permeable to anions, the water to be disinfected is pumped through the anode compartment, and the... | 08/17/1976 |
