Famous Patents
The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4342946 | Timed automatic headlight shut-off A timing circuit is provided for the headlights of an automotive vehicle to maintain the headlights in an illuminated condition for an adjustable, predetermined time after the vehicle ignition is turned off. The timing circuit is housed in an enclosed cas... | 08/03/1982 |
| 4330716 | Automatic vehicle headlight control system An auxilliary automobile headlight and taillight switching system which is responsive to the operation of the windshield wiper motor and the vehicle alternator for controlling the energization of the low beam headlights and taillights. The system includes... | 05/18/1982 |
| 4309639 | Light modulator system and method A system for modulating an incandescent light to avoid total loss of illumination and to achieve improved conspicuity of the light along with subjective enhanced illumination. The modulating unit is electrically connected between a source of electrical po... | 01/05/1982 |
| 4306158 | Battery saver headlight switch An automatic headlight extinguishing switch apparatus especially adapted to interfit with an existing automobile light switch member which comprises a switch means and a wiring harness. The headlight extinguishing switch apparatus comprises an adapter app... | 12/15/1981 |
| 4293893 | Apparatus for controlling light projection angle of head lamp of motor vehicle An apparatus for controlling angular position of optical axis of a head lamp assembly for a motor vehicle. An actuator is supplied selectively with the atmospheric pressure and a negative pressure available from an intake conduit of an internal combustion... | 10/06/1981 |
| 4284903 | Device for adjusting the inclination of motor vehicle headlamps A device for adjusting the inclination of vehicular headlamps includes an electric motor for positioning the headlamps, an adjusting switch for selecting one of a plurality of predetermined headlamp positions and a reversing switch connected to the adjust... | 08/18/1981 |
| 4241260 | Motorized headlamp position adjusting circuit A motorized headlamp position adjusting circuit for adjusting the angular position of a vehicular headlamp includes two motor position switches and an operating switch interconnected such that the number of wires to the control switch is reduced.... | 12/23/1980 |
| 4197491 | Headlamp levelling system A headlamp levelling system for a road vehicle, comprises an electric motor which, in use, drives a member coupled to the headlamp so as to allow the headlamp to be adjusted in a manner to vary the direction of the light beam emitted, in use, by the headl... | 04/08/1980 |
| 4190830 | Lamp outage indicator circuit An indicator circuit for indicating whether an incandescent type lamp is burned out. The indicator circuits include a voltage reference source and an indicator LED which is normally biased just below the knee of its conduction curve, but which is biased i... | 02/26/1980 |
| 4162424 | Load trim compensating vehicle headlight deflection system A command transmitter is in the form of a step switch with a progressive bridging contact, the individual contacts of the step switch being connected to individual contacts of a contact array over which a slider mounted on the drive rod that actuates the ... | 07/24/1979 |
| 4139801 | Automatic automobile light control system A system for automatically controlling actuation of various parts of an automobile in accordance with various sensed conditions. Four photocells are mounted, preferably about the periphery of the courtesy light inside the automobile on the roof, to receiv... | 02/13/1979 |
| 4122371 | Control circuit for vehicle compartment light Control circuit for shifting a compartment light between an illuminating condition and a non-illuminating condition for use in a vehicle having a door, a manually actuated door switch and a manually actuated control switch generally in combination with th... | 10/24/1978 |
| 4115723 | Control circuit for vehicle compartment light A control circuit for controlling the compartment or dome light of a vehicle whereby the dome light remains on after one of the door handle buttons has been depressed. This circuit includes means for retaining a fixed timing function, irrespective of the ... | 09/19/1978 |
| 4087696 | Electrical branch circuit structure means An electrical branch circuit for use as in a swingable door of an automotive vehicle is shown having an electrical load connected to first ends of electrical conductors which, in turn, at their respective other ends are connected to terminal means mechani... | 05/02/1978 |
| 4057742 | Vehicle light switch apparatus A system for automatically turning on vehicle road lights responsive to the operation of the vehicle windshield wipers. The vehicle windshield wiper switch is connected by an electrical circuit to the road light switch of the vehicle. A first diode circui... | 11/08/1977 |
| 4051383 | Electrical harnesses and connecting devices therefor Electrical harness comprises a plurality of conductors to which switches and electrical loads are connected. The connections between the conductors and loads or switches are made with a connecting device comprising an insulating body having a recess which... | 09/27/1977 |
| 4029991 | Instrument panel illumination dimming control The brightness of an LED display on an automobile instrument panel is independent of the battery voltage but does depend on the position of the instrument panel illumination dimmer potentiometer. The voltage applied to the LED is limited to a maximum by a... | 06/14/1977 |
| 4015137 | Control for activating motor vehicle electrical load A control for activating an electrical load, such as a lighting system, in a motor vehicle having an ignition system. A first voltage, inversely proportional to the frequency of the motor vehicle ignition pulses, is applied to the anode of a programmable ... | 03/29/1977 |
| 4011460 | Control for activating motor vehicle electrical load A control for activating an electrical load, such as a lighting system, in a motor vehicle having an ignition system. A first voltage, inversely proportional to the frequency of the motor vehicle ignition pulses, is applied to the anode of a programmable ... | 03/08/1977 |
| 4009363 | Vehicle switch attachment An attachment for a vehicle switch is provided in which a switch knob and decorative cover on the dashboard of a vehicle can be removed and replaced with a new decorative cover and knob incorporating a switch. This allows a separate electrical switch to b... | 02/22/1977 |
| 3993914 | Motor vehicle headlight control apparatus In a vehicle having an ignition switch, headlights and a storage battery, a relay has its winding in series with the battery and the collector-emitter circuit of a transistor and has normally open contacts in a headlight energizing circuit. A resistance-c... | 11/23/1976 |
| 3989954 | Electrical circuit for swingable headlights of a motor vehicle Electrical circuit for swingable headlights of a motor vehicle including an electric motor for positioning the headlights and a multi-step switch for initiating the movements of the motor for positioning the headlights. The circuit also includes a contact... | 11/02/1976 |
| 3970860 | Electrical apparatus to connect towing vehicle light circuits to a trailer light circuit when the towing vehicle has separate circuits respectively for turning and stop lights and the trailer has a common light circuit for both turning and stop lights The adapter circuit is interposed between the towing vehicle light circuit including at least a right turn light circuit, a brake light circuit, a left turn light circuit, and a light system common and the trailer light circuit including at least a left s... | 07/20/1976 |
| 3963940 | Automatic headlight control circuit An automatic headlight control circuit is disclosed which will serve to turn-on automobile lights in response to pulsed external signals such as ignition pulses. A delay circuit is provided which will cause the lights to be turned-off a predetermined peri... | 06/15/1976 |
| 3932788 | Automobile headlight switch A lighting circuit and switch for an automobile which provides an additional switch ON position for the daytime operation of the headlights which ensures that the headlights are turned off when the vehicle engine is stopped. The additional ON position of ... | 01/13/1976 |
