Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 4322715 | Automotive light circuit A signal circuit for a vehicle having two front lights and two rear lights each having a single filament lamp. The light circuit provides a parking light circuit wherein each of the lights is illuminated with partial voltage, a brake light circuit wherein... | 03/30/1982 |
| 4307301 | Electric circuit arrangement for replacement of an electric switch, with combined pushing and locking function for automotive vehicles An electric circuit arrangement to replace the combined pushing and locking electric switch of the type used in DC fed automobile blinker systems, characterized by a signal detection unit controlled by a push switch and comprising a timer member, an integ... | 12/22/1981 |
| 4258292 | Flasher devices for lamps The invention provides a two-terminal flasher device, particularly for flashing automobile lamps, that can replace the thermal devices predominantly currently in use. An electro-mechanical relay is used to flash the lamps, while an electronic circuit cont... | 03/24/1981 |
| 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 |
| 4189662 | Safety device for lamps of motor vehicle An improved safety device comprises a plurality of checking lights connected with the lamps of the automobile in series, a plurality of indicating lights adapted to an amplifier circuit and a magnetic induction coil, in which, the brightening or extinguis... | 02/19/1980 |
| 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 |
| 4092563 | Flasher inductance circuit Deterioration of the electrical contacts of variable load flashers provided for intermittently energizing vehicle signal lamps is inhibited by the provision of a coiled length of a current conductor having a suitable inductance value connecting the flashe... | 05/30/1978 |
| 4086565 | Automotive electronic flasher unit Flasher unit which comprises an electromagnetic relay which is controlled by an astable multivibrator. The voltage drop across a resistor of low value controls a circuit for inhibiting the operation of the astable multivibrator in the event of excess curr... | 04/25/1978 |
| 4064413 | Relay adapter circuit for trailer lamps A relay adapter circuit is electrically connected with the existing stop lamp and turn signal lamp systems of a motor vehicle and with the existing lamps on a trailer towed by the motor vehicle. The adapter is especially suited for installation where the ... | 12/20/1977 |
| 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 |
| 4015136 | Electrical systems for road vehicles A road vehicle electrical system includes a plurality of switches controlling remote loads. The system makes use of voltage sensitive control devices which are operated in synchronism to connect each switch to its load periodically via a conductor which i... | 03/29/1977 |
| 4006453 | Dual directional and brake light control for trailers A device for adapting combined brake and turn signal lights on a trailer to independent brake signal and turn signal lights on a towing vehicle has two circuits, one for each side, each circuit having a brake signal switch, such as a transistor, silicon-c... | 02/01/1977 |
| 3975708 | Vehicle condition monitoring system A display panel or console is mounted in the driving compartment of the vehicle in a position to be observed by the driver and provides status information regarding, for example, the operability of the headlights or taillights, and position information co... | 08/17/1976 |
| 3958149 | Motor vehicle rear lighting system A motor vehicle rear lighting system comprises first and second lamp filaments in a single bulb envelope, the first lamp filament having a greater resistance than that of the second lamp filament. One or more electrical switches are operable, in one posit... | 05/18/1976 |
| 3949361 | Signal system for automotive vehicle A signal system for an automotive vehicle, especially a system for giving an early signal to a following vehicle and particularly characterized in that an amber light visible from rearwardly of the vehicle is illuminated when the engine is running and the... | 04/06/1976 |
| 3940657 | Integrated circuit flasher A flasher circuit is disclosed for use with a conventional automotive turn signal system. The flasher circuit comprises a flasher relay under the control of a free-running multivibrator. The multivibrator takes the form of a pair of intercoupled logic gat... | 02/24/1976 |
