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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 |
| 4754740 | Device for continuous fuel injection Apparatus for the continuous injection of fuel into the intake piping of an internal combustion engine comprises an air pump for delivering an air stream portion deviated from the engine intake pipe, a fuel pump for delivering fuel from a source, a meteri... | 07/05/1988 |
| 4740039 | Hydraulic dual-circuit brake system for automobiles A hydraulic dual-circuit brake system for automobiles, comprising wheel brakes positioned at the front and rear wheels, a master brake cylinder, brake lines for transmitting brake pressure from the master brake cylinder to the wheel brakes to actuate the ... | 04/26/1988 |
| 4646706 | System for continuous fuel injection In the representative system for continuous fuel injection described in the specification, an air pump withdraws air from the air intake line of a gasoline engine and a fuel pump delivers fuel from a fuel tank through a fuel pressure regulator to a meteri... | 03/03/1987 |
| 4638719 | Unbalanced hydraulic amplifier valve assembly A pressure-unbalanced hydraulic amplifier valve assembly has an axially slidable amplifier piston and a control plunger axially slidably arranged in the amplifier piston with a loose fit to permit a slight radial movement thereof in the amplifier piston. ... | 01/27/1987 |
| 4616617 | Method and arrangement for combustion chamber identification in an internal combustion engine For the purpose of identification of a combustion chamber producing undesirable hunting in a fuel injection combustion engine, the duration of injection of a defined injection valve is changed in such a manner that additional hunting is caused, and from t... | 10/14/1986 |
| 4611633 | Expansion hose for reduction of pressure pulsations An expansion hose having a central internal throttle element dividing the interior of the hose into two chambers, and an internal hose extending from the expansion hose inlet through one of the chambers and the throttle element into the second chamber. Th... | 09/16/1986 |
| 4605087 | All-wheel drive system for vehicles In the particular embodiments described in the specification, an all-wheel drive system is disclosed wherein either the wheels of both the front axle and the rear axle of a vehicle are driven continuously and the front axle and rear axle can be rigidly co... | 08/12/1986 |
| 4602522 | Transmission with overdrive A motor vehicle transmission includes a torque converter and planetary gear arrangement. Clutches are provided for connecting the torque converter with the gear arrangement. The clutches are arranged so that the direct drive transmission gear can be engag... | 07/29/1986 |
| 4593580 | Device for shifting without clutch and without synchronizing elements in a multiple gear ratio transmission of a vehicle In a vehicle drive with a drive engine, power control means coupled to the engine, and a multiple gear ratio transmission without a clutch or synchronizing elements, a regulating means is coupled to the power control means for unloading the engine at the ... | 06/10/1986 |
| 4589703 | Hydraulic brake pressure regulator In the particular embodiments of the invention described in the specification, a hydraulic brake pressure regulator for the hydraulic brake system of a motor vehicle is designed to provide a family of characteristic curves which are dependent upon the veh... | 05/20/1986 |
| 4585281 | Pressure-operated brake system for automobiles In the particular embodiments described in the specification, a pressure-actuated brake system for motor vehicles with a brake slip control includes a control means electronically detecting the commencement of a brake slip control operation to provide a s... | 04/29/1986 |
| 4570762 | Cage for a roller brake freewheel In the particular embodiments disclosed in the specification, a cage for a roller brake freewheel consists of two annular sidewall members which are connected with each other by connecting webs extending transversely between them so as to form chambers di... | 02/18/1986 |
| 4557874 | Distribution system for a two-phase fluid mixture In the particular distribution system described in the specification a first housing part has a fuel injection nozzle and an air inlet and the fuel-air mixture passes through a fluid supply line in the first housing part to a disc-shaped distribution cham... | 12/10/1985 |
| 4544299 | Traction- and pressure-transmitting link joint between two structural components executing joint movements In the embodiments of the invention described in the specification, a piston and a connecting rod of an internal combustion engine have opposed approximately semi-cylindrical bearing regions partially enclosing a pin, leaving free gaps between the bearing... | 10/01/1985 |
| 4543855 | Method for operating a vehicle having an automatic, continuously variable gear ratio transmission A method for operating a vehicle having an automatic, continuously variable speed transmission comprising at least three control phases. During a first control phase, the engine speed is maintained at a substantially constant value while the transmission ... | 10/01/1985 |
| 4536708 | Apparatus for obtaining an information on the motion of a moving element, preferably for rotational speed of a rotating element in an automobile Apparatus for determining rotational speed includes a sensor for generating electrical pulse signals representative of rpm in a conventional manner. The electrical pulses are converted to light pulses at the sensor and transmitted to an evaluation circuit... | 08/20/1985 |
| 4533011 | Hybrid drive for a vehicle, in particular an automobile A hybrid drive for a vehicle includes an electric engine supplied with energy from an electrical storage device and capable of returning energy back to the storage device. The electric engine is connected with a driving axle of the vehicle by a first disc... | 08/06/1985 |
| 4532741 | Window pane mounting for vehicles In the particular embodiment described in the specification, a window pane mounting for a vehicle includes a flange on the vehicle forming a window opening, a cement bead extending between the flange and a window supported in the opening, and a resilient ... | 08/06/1985 |
| 4531605 | Arrangement for driving the generator of a vehicle, in particular a passenger automobile A vehicle having an engine which is stopped during selected operating states and a generator having counterrotating members. One of the counterrotating members is connected to the engine and the other counterrotating member is connected to the wheels of t... | 07/30/1985 |
| 4517938 | Rotary valve arrangement In the specific embodiment described herein, a rotary valve for the gas exchange of an internal combustion engine has a rotary member and a housing and a series of circumferential dry-bearing gas-sealing rings and dry surface seals arranged to block leaka... | 05/21/1985 |
| 4517934 | Controllable camshaft for a drive, preferably an internal combustion engine A camshaft for the drive of an internal combustion engine has a hollow shaft carrying one or more cams or partial cams and an inner shaft disposed within the hollow shafts and rotatable relative to the hollow shaft. The inner shaft has one or more cams or... | 05/21/1985 |
| 4518172 | Energy-dissipatingly flexible knee-restraining element The invention relates to an energy-dissipating flexible knee-restraining element for vehicles, in particular passenger automobiles, comprising a hollow profiled beam extending in the transverse direction of the vehicle and located below the instrument pan... | 05/21/1985 |
| 4501173 | Fluid delivery control device for an automatic transmission A control device for effecting variable hydraulic fluid delivery to a gearshift element of an automatic transmission and controlling actuation of the gearshift element. Such a control device includes a delivery line for supplying a pressurized fluid to th... | 02/26/1985 |
| 4499965 | Hybrid drive arrangement The invention concerns a hybrid drive arrangement for vehicles, with an engine drive and with a flywheel storage drive, which includes a storage flywheel supported concentrically relative to the crankshaft for storing kinetic energy during such operations... | 02/19/1985 |
| 4494640 | Hydraulic control device for an automatic transmission A hydraulic control device for automatic transmissions of the type where pressurized fluid activates a gear shift element, e.g., a forward clutch, includes a shift valve to selectively interrupt the delivery of pressurized fluid to disengage a gearshift e... | 01/22/1985 |
| 4494729 | Valve operating mechanism, in particular for an automobile internal combustion engine A valve operating mechanism for an internal combustion engine for an automobile in which friction is decreased without an increase in the mass to be moved by the valve closing spring. The valve operating mechanism has a roller arranged on an actuation spi... | 01/22/1985 |
| 4470387 | Mass balancing arrangement for a reciprocating-piston engine In a reciprocating-piston engine including operating cylinders, a piston associated with each cylinder, a crankshaft with crankpins, and piston rods for connecting the pistons to the crankpins, a mass balancing arrangement has a balancing mass connecting ... | 09/11/1984 |
| 4458647 | Mixture compressing internal-combustion engine including an anti-knocking device A mixture compressing internal-combustion engine having a combustion chamber, an intake conduit for introducing a combustible mixture into the combustion chamber, a throttle valve for controlling the flow of the mixture in the intake conduit and apparatus... | 07/10/1984 |
| 4457679 | Vane pump with unilateral bearing The invention relates to a motor-driven vane pump, and in particular to vane pumps for generating a vacuum used to operate a secondary unit of an automobile. The vane pump comprises a cast approximately bell-shaped pump housing in which a rotor is eccentr... | 07/03/1984 |
| 4455983 | Method and arrangement for operation of an internal combustion engine of a vehicle The operation of a motor vehicle is controlled by reading of a programmed memory to accelerate the vehicle along a predetermined optimum efficiency curve. The acceleration is independent of the position of the accelerator pedal, provided the pedal is neit... | 06/26/1984 |
| 4454755 | Method for testing a carburetor Carburetors are tested using a flow-testing bench which includes a first and second critical flowthrough nozzle arrangement, arranged upstream and downstream, respectively, of the carburetor, and a third critical flowthrough nozzle arrangement which by-pa... | 06/19/1984 |
| 4449495 | Engine with automatic cut-off device A vehicle is equipped with an engine, a transmission and a control device for cutting off the engine. This control device is actuated as a function of the position of the gearshift lever.... | 05/22/1984 |
| 4445601 | Vehicle having a main clutch and an auxiliary controllable clutch A clutch arrangement for a motor vehicle having an internal combustion engine for driving the vehicle and a flywheel coupled between the vehicle transmission and the engine for equalizing the non-uniformity of the engine output torque. The clutch arrangem... | 05/01/1984 |
| 4445648 | Safety device for vehicles A safety device for vehicles includes a safety belt for restraining a passenger in a normal position in a seat. A winder is attached to one end of the safety belt and winds the end of the belt onto a winding roller. A blocking device is actuated to preven... | 05/01/1984 |
| 4440257 | Vibration-insulating bearing arrangement for a drive unit A bearing arrangement for mounting a drive unit on a supporting framework of a vehicle is designed so that vibrations from the drive unit are isolated from the vehicle. The arrangement includes at least one torque bracing device for counteracting the reac... | 04/03/1984 |
| 4422668 | Passive safety device A passive safety device for vehicles has a safety belt with at least one upper end associated with the shoulder of the vehicle occupant. This upper end of the safety belt is connectable by a manually-operable belt lock with a shackle. The shackle is held ... | 12/27/1983 |
| 4418966 | Pump-less hydraulic brake system for automobiles A pump-less hydraulic brake system has a pair of independent brake lines, each connected to diagonally opposed front and rear wheel brakes, and a control valve mechanism disposed in each brake line. Each control valve mechanism has an electrically connect... | 12/06/1983 |
| 4416360 | Drive for automobile automatic transmission A drive train for an automobile engine and automatic transmission includes a clutch positioned between the engine and the flywheel and a starting motor on the transmission side of the clutch.... | 11/22/1983 |
| 4414944 | Device for continuous injection of a mixture consisting of fuel and air into the intake line (or manifold) of an internal combustion engine A fuel injection device for continuously injecting the mixture of fuel and air into the cylinders of an internal combustion engine has an intake pipe, an arbitrarily adjustable throttle flap, and a venturi in the intake pipe at a point upstream of the thr... | 11/15/1983 |
| 4411171 | Vehicle drive A vehicle having an internal combustion engine and flywheel includes a first clutch arranged between the flywheel and the vehicle drive shaft and a second clutch arranged between the flywheel and engine for selectively disconnecting the engine from the ve... | 10/25/1983 |