| Patent Number |
Title Of Patent |
Date Issued |
| D255231 |
Combined grille and headlight panel for a vehicle |
June 3, 1980 |
|
| D254543 |
Vehicle body rear bumper unit |
March 25, 1980 |
|
| 4354990 |
Process for sintering silicon nitride compacts |
October 19, 1982 |
| Sintered silicon nitride articles are prepared by sintering a silicon nitride compact of a density of at least 1.3 g/cm.sup.3 in nitrogen gas atmosphere at substantially atmospheric pressure, while the compact is embedded in a protective powder comprising silicon nitride, boron nitride, |
| 4351787 |
Process for sintering reaction bonded silicon nitride |
September 28, 1982 |
| Sintered silicon nitride articles are prepared from a silicon nitride compact by forming a silicon powder containing one or more sintering additives for silicon nitride into a compact having at density of at least 1.3 g/cm.sup.3, said additives being present in the powder in an amount |
| 4278401 |
Blade for wind motors |
July 14, 1981 |
| A wind motor blade of composite construction has a blade shell of plastics material reinforced internally by transverse ribs and intersecting longitudinal struts in which metal fork arms are embedded, the fork arms being connected to a metal root attachment spigot through a metal cro |
| 4276747 |
Heat recovery system |
July 7, 1981 |
| A heat recovery system for the production of mechanical energy from a plurality of different heat sources at different temperatures comprises a plurality of heat exchangers associated one with each heat source, a plurality of circuits for a working fluid which traverses the heat exch |
| 4256997 |
Apparatus for the supply, regulation and control of direct current electrical machines |
March 17, 1981 |
| The supply, regulation and control of a direct current electrical machine such as a motor or generator having a number of winding sections is controlled by energization of the winding sections by staggered pulses which combine to produce a reasonably constant total winding current, the |
| 4246921 |
Fluid-pressure operated pilot valve devices |
January 27, 1981 |
| A fluid-pressure operated pilot valve produces a cyclic modulation of pressure in a control duct, for operating a relay valve, by introducing a predetermined delay between the displacement of a first valve element from, and its return to, a first position against a first valve seat by a |
| 4242593 |
Device for converting sea wave energy into electrical energy |
December 30, 1980 |
| A device for converting sea wave energy into electrical energy comprises a floating platform carrying a pulley which is connected through a free-wheel coupling and a speed multiplier to a drive shaft of an electrical generator, on which a flywheel is mounted. An anchor cable passes o |
| 4241113 |
Process for producing protective coatings on metals and metal alloys for use at high temperature |
December 23, 1980 |
| A process for forming a protective metal diffusion coating on a metal or metal alloy workpiece including internal cavity surfaces, comprises coating the workpiece with a slurry in acetone and cellulose acetate of a powder of average grain size of 0.5.mu. to 10.mu., including aluminum and |
| 4212657 |
Device for the removal of particles of lead from the exhaust gases of an internal combustion eng |
July 15, 1980 |
| Pollutant particles, particularly lead particles, are removed from engine exhaust gases by passing the gases successively through three aligned chambers, of which the first and third contain wire mesh or expanded metal packings, while the second chamber is divided by a deflecting baffle |
| 4206875 |
Heat recovery apparatus |
June 10, 1980 |
| A recuperator for recovering heat from hot exhaust gases flowing through a flue comprises inner and outer cylindrical walls coaxially surrounding a portion of the flue to which a plurality of fins are fixed, the fins extending longitudinally of the flue and being grouped such that fins |
| 4200361 |
Liquid crystal mirror for use as a rear-view mirror for vehicles |
April 29, 1980 |
| A rear-view mirror for motor vehicles incorporates a liquid crystal film sandwiched between front and rear transparent electrode surfaces, the rear electrode surface being in the form of a lattice or net having a number of clear areas through which light passes unattenuated when the cell |
| 4194476 |
Device for feeding Otto cycle engines with lean combustible mixtures |
March 25, 1980 |
| Lean air/fuel mixture is supplied to the induction manifold of an Otto cycle engine through a heat exchanger heated by engine exhaust gases under normal running conditions, and under idling conditions mixture is supplied to an auxiliary induction manifold solely through an auxiliary duct |
| 4181373 |
Hydraulic actuator for a motor vehicle anti-skid braking system |
January 1, 1980 |
| A hydraulic actuator for a motor vehicle anti-skid braking system, in which the static and dynamic parts of the hydraulic circuit are separated, the actuator having a solenoid valve operated by electrical signals generated by sensors when associated wheels of the vehicle reach an incipie |
| 4181334 |
Safety catch |
January 1, 1980 |
| A safety catch for a frontally opening hood of a motor vehicle comprises a resilient strip having transverse tongues at its upper end which snap engage in a recess in a bracket on the under side of the hood, the strip being capable of limited vertical movement and being anchored elastica |
| 4179839 |
Device for keeping under control the population of selected species of insects |
December 25, 1979 |
| An apparatus for use in monitoring the numbers of a selected species of insect comprises one or more traps into which is put a synthesized pheromone to attract that particular insect. Each trap has a grille comprising a plurality of bars between which is applied a high voltage so tha |
| 4176791 |
Automatically controlled irrigation system |
December 4, 1979 |
| An irrigation system of the type comprising a plurality of nozzles spaced along a pipeline fed at one end from a source of supply of irrigation liquid, which latter may be purely water or may be water with additives, in which in order to avoid different spray rates due to a loss in press |
| 4167172 |
Device for monitoring the lubrication of the crankshaft of a reciprocating internal combustion e |
September 11, 1979 |
| The lubrication of an engine crank shaft is monitored using a wheatstone resistance measuring bridge one of the arms of which includes lubricating oil ducts between the crank shaft and crank case of the engine, balanced against a reference resistance provided by a resistance measuring ce |
| 4164660 |
Plant for the production of electrical energy and heat |
August 14, 1979 |
| A power plant has an electrical generator driven by an internal combustion engine in which engine coolant circulates in a gas/liquid heat exchanger to take up heat from engine exhaust gases and then through a liquid/liquid heat exchanger to give up heat to a secondary water circuit, the |
| 4161653 |
Control circuit for rear view mirrors provided with a liquid crystal cell |
July 17, 1979 |
| An anti-dazzle rear view mirror incorporates a liquid crystal cell the conductive layers of which are energized by a control voltage in response to light above a threshold intensity impinging on a photoresistor in the control circuit of the cell. A low voltage source, for example a vehic |
| 4159709 |
Low cost solar panel |
July 3, 1979 |
| A low-cost solar panel is fabricated from three laminated plastics layers, the upper two layers being transparent to luminous and infra-red solar radiation and the bottom layer being opaque; in one version water to be heated flows first between the upper two layers and then between the l |
| 4156151 |
Electric apparatus for the distribution of energy particularly for vehicles |
May 22, 1979 |
| A system for distributing electrical energy to the electric current consumer devices of an automobile without having to wire each consumer individually via a switch to the power source, comprising a central control unit connected to a plurality of remote control units by a single con |
| 4154487 |
System for controlling the torque transmitted to motor vehicle driving wheels by a differential |
May 15, 1979 |
| A braking device for controlling the torque transmitted to driving wheels via a differential gear, in which the speed and acceleration of each wheel is detected and the appropriate wheel is braked if its speed and/or acceleration exceeds respective predetermined thresholds if the speed a |
| 4150655 |
Lubricating oil sump for internal combustion engines |
April 24, 1979 |
| A lubricating oil sump for an internal combustion engine has hollow side and bottom walls through the interspaces of which engine coolant is circulated to cool oil in the sump, the interspace in the bottom having a meandering flow passage and the internal surface of the sump bottom havin |
| 4140084 |
Process and apparatus for the stabilization of the period of opening of electromagnetic fuel inj |
February 20, 1979 |
| The period of opening of a solenoid-operated fuel injector is stabilized against variation of vehicle battery voltage by computing the period of injector opening from the instant of a discontinuity present in each rise of the solenoid energizing current. The discontinuity is detected and |
| 4135985 |
Desalination of salt water by solar energy means |
January 23, 1979 |
| Desalination apparatus using solar energy comprises a main insulated container with a subsidiary preheating container next to it; the main container is covered with a transparent cover serving as a selective filter to provide "the greenhouse effect" and also as a condensation surface |
| 4130990 |
Hydraulic system for feeding a plurality of independent hydraulic servo-operated devices |
December 26, 1978 |
| A hydraulic system for feeding a plurality of independent hydraulic servo-operated devices, such as servo-assisted brakes, clutch and/or servo-operated steering, in which a single pump draws fluid from a common reservoir and fluid pressure is automatically distributed by one or more |
| 4125015 |
Process and device for determining the quantity of air inducted by an internal combustion engine |
November 14, 1978 |
| The quantity of air inducted in a four cylinder Otto engine with fuel injection and an inlet throttle for each cylinder is determined by indirect measurement, unaffected by atmospheric pressure variations. The induction air pressure is measured by a transducer located between one of |
| 4123908 |
Hydraulic servo assisted braking system |
November 7, 1978 |
| A servo-assisted hydrodynamic braking system of the type in which brake pedal pressure is used to control a modulating valve which restricts an output line of a pump thereby increasing the pressure in the output line which is connected to the master cylinder of the braking system in such |
| 4122723 |
Method and apparatus for testing the quality of cast iron pieces especially spheroidal cast-iron |
October 31, 1978 |
| Spheroidal cast iron pieces are tested by clamping each individual piece on a vibratory test rig together with a reference datum piece and using the measured amplitude and frequency of the system at resonance to derive an automatic indication, through an electronic logic circuit, of the |
| 4114376 |
Servo-assisted hydraulic braking system |
September 19, 1978 |
| Servo-assisted hydraulic braking system of the type in which brake pedal pressure is reinforced by a pressure dependent thereon and fed to a master cylinder driving piston by a distributor device which is fed with fluid under pressure from a pressure source and control pressure from cont |
| 4109743 |
Propulsion unit for vehicles |
August 29, 1978 |
| A mixed propulsion system comprising a turbine unit having two output shafts which drive two counter rotating flywheels and, via a reduction gearbox, two generators which generate electricity to drive two electric drive motors the output shafts of which are connected to the wheels of the |
| 4109506 |
Device for monitoring the lubrication of the crankshaft of a reciprocating internal combustion e |
August 29, 1978 |
| A device for testing the lubrication of an internal combustion engine has a potentiometer circuit connected between two electrodes one in contact with the crankshaft and the other in contact with the crank case, a first voltage detector of the averaging type connected directly across the |
| 4108273 |
Power assisted steering |
August 22, 1978 |
| A power assisted hydraulic steering device in which the hydraulic actuators and the control valves are all contained in a common cylindrical housing surrounding a control shaft connectable to the steerable wheels of the vehicle, the actuator comprises an annular piston formed on the cont |
| 4104915 |
Ultrasonic device for the determination of the rate of air flow in the inlet duct of an internal |
August 8, 1978 |
| A device for determining the rate of flow of air in the intake duct of an internal combustion engine comprises a detector duct of generally rectangular cross section housing two ultrasonic detectors one at each end, lying adjacent the detector duct is an intake duct having an inlet a |
| 4101138 |
Gasket for internal combustion engines, incorporating locating pins |
July 18, 1978 |
| A vibration-dampening gasket of elastic material for interposition between upper and lower blocks of an internal combustion Diesel or Otto cycle engine has integral locating pins for force-fitting engagement in holes in the lower engine block and a greater thickness than a seat in which |
| 4095578 |
Induction conduits of internal combustion engines |
June 20, 1978 |
| An induction conduit in an internal combustion engine cylinder head is formed with an appendage of rectangular section extending parallel to the axis of a valve stem at the end of the conduit adjacent the valve seat and disposed in a radial plane inclined to the transverse axis of the va |
| 4092717 |
Method and apparatus for stabilizing the through flow of electromagnetic injectors |
May 30, 1978 |
| In order to stabilize the open time of an electromagnetic fuel injector against variation of vehicle battery voltage, first and second threshold values of solenoid current for opening and closing of the injector are predetermined experimentally, the duration of the injection control sign |
| 4092047 |
Control device for a motor vehicle pneumatic braking system |
May 30, 1978 |
| A control device for a pneumatic braking system which is particularly suitable for industrial trucks and lorries the axle loading of which varies widely depending on whether the truck is empty or fully laden. The device has an inlet port which in use is fed with the braking control p |
| 4078846 |
Fluid distribution valve for a motor vehicle braking system |
March 14, 1978 |
| A fluid operated braking system for a motor vehicle, having a main braking circuit for applying braking pressure to the actuators of both wheels of at least one axle of the vehicle and a subsidiary braking circuit for applying a reduced braking pressure to one of the wheels of the axle i |
| 4063540 |
Method and apparatus for fuel recovery in internal combustion engines |
December 20, 1977 |
| Apparatus and method for recovering fuel from the induction system of an internal combustion engine having a carburetor, comprising one or a plurality of collectors along the fuel path between the carburetor throttle valve and the inlet valves of the engine, the collectors being in t |
| 4063537 |
Combustion chambers, for diesel engines |
December 20, 1977 |
| A combustion chamber for a diesel engine has a secondary chamber, communicating with a precombustion chamber, the secondary chamber consisting of a central channel extending diametrically in the piston crown and having at its discharge end two branches, forming an anchor configuratio |
| 4057300 |
Motor vehicle braking system |
November 8, 1977 |
| A fluid operated braking system for a motor vehicle, having a main braking circuit for applying braking pressure to the actuators of both wheels of at least one axle of the vehicle, and a subsidiary braking circuit for applying a reduced braking pressure to one of the wheels of the axle |
| 4046128 |
Cylinder heads for internal combustion compression-ignition engines |
September 6, 1977 |
| A cylinder head for a compression-ignition (diesel) engine has a sector accommodating the upper part of a fuel injector between four valves, the sector being isolated from the tappet lubricating oil by a protecting casing on the upper part of the cylinder head. The casing may itself be |
| 4036190 |
Device for automatic control of electronic spark ignition advance for internal combustion engine |
July 19, 1977 |
| Automatic control of spark advance in an electronic ignition system for an internal combustion engine is effected by using a first electromagnetic pick-up cooperating with a protuberance which is phase-displaced on a rotary part (flywheel) relative to top dead center by the maximum advan |
| 4034271 |
Electrical distribution systems for motor vehicles |
July 5, 1977 |
| An electrical distribution system suitable for use on motor vehicles where electric current is to be supplied selectively to one or more electric power consuming devices, wherein there is provided a main power carrying conductor and a plurality of signal carrying lines which energize one |
| 4033638 |
Hydro-dynamic anti-skid braking systems |
July 5, 1977 |
| A hydro-dynamic brake system of the type having a volumetric pump circulating brake fluid to a reservoir, and a modulating valve in the output of the pump acting under the control of the brake pedal to constrict the pipeline thereby increasing the pressure at the output of the pump. |
| 4033305 |
Electronic ignition systems for an internal combustion engine |
July 5, 1977 |
| A device for automatically varying the ignition spark advance angle in an electronically controlled ignition system for an internal combustion engine, in which there is a first sensor for producing a train of pulses the pulse repetition frequency of which represents the engine speed and |
| 4030759 |
Pneumatic anti-skid brake system having proportional pressure control means |
June 21, 1977 |
| An improvement in pneumatic anti-skid braking systems for at least one wheel of a vehicle, of the type having a first valve system for causing a controlled reduction in braking pressure in a brake actuator upon reception of a control signal from an anti-skid control device sensitive |
