Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7646678 | Analog watch Provided is a watch capable of performing digital display as well as analog display. The watch can offer digital display without posing disadvantages peculiar to a liquid crystal panel. On the other hand, the watch can reduce the restrictions in design and make the ... | 01/12/2010 |
| 7385879 | Radio-controlled clock A radio-controlled clock (RCC) for receiving and decoding a transmitted time signal to display a precise time in accordance with a time standard. A light emitting diode (LED) display emits sufficient light for easy readability under all lighting conditions, includin... | 06/10/2008 |
| 7324071 | Segmented character display A character display comprises fifty-nine segments arranged into rows and columns. Twenty eight of the fifty-nine segments define a periphery of the display, eleven additional segments define horizontal and vertical dividers that define four quadrants, and five addit... | 01/29/2008 |
| 7221044 | Heterogeneous integrated high voltage DC/AC light emitter A single-chip integrated LED particularly adapted for direct use with a high voltage DC or AC power sources comprises a plurality of electrically isolated LEDs on a generally transparent substrate and bonded to electrically conductive elements on a thermally conduct... | 05/22/2007 |
| 7215319 | Wristwatch type device and method for moving pointer A feature of the present invention includes a device having a display controller for controlling a display position of the pointer on the display screen, a displacement detector for detecting a displacement of the device itself, and a pointer mover for moving the po... | 05/08/2007 |
| 7061062 | Integrated circuit with unified input device, microprocessor and display systems An integrated circuit having at least one micromechanical element thereon is described comprising a support substrate, a sensor element electrically connected to a logic circuit, and the logic circuit electrically connected to a semiconductor visual display element.... | 06/13/2006 |
| 6994448 | Solar powered illuminated devices A solar powered illuminated device is provided with a power module electrically connected to an illuminated module, the power module having a solar cell array electrically connected to a battery array having at least one rechargeable battery, the battery array being... | 02/07/2006 |
| 6980119 | Solid-state warning light with environmental control The present invention relates generally to warning lights, and more specifically, to solid-state (LED) warning light whose operation is modulated in response to environmental conditions, generally under the supervision of a microprocessor or dedicated control circui... | 12/27/2005 |
| 6906700 | 3D controller with vibration A hand operated controller or converter structured for allowing hand inputs to be converted or translated into electrical outputs, the controller structured with a plate or platform moveable relative to a base or housing about two mutually perpendicular axes general... | 06/14/2005 |
| 6894440 | Method and device for lighting an electronic or electromechanical apparatus The present invention is a lighting device for an electronic or electromechanical apparatus such as a timepiece of the wristwatch type. The invention including a device displaying time-related or other information, this lighting device including a light source for l... | 05/17/2005 |
| 6811278 | Electroluminescent clock An electroluminescent clock is disclosed, wherein light emitting dots are installed on the back side of a transparent plate and ring around and beneath luminous markers, whereby when the light emitting dots are enabled, the luminous markers can be presented with uni... | 11/02/2004 |
| 6683822 | Time display device The invention provides an enhanced structure of a time display device includes a circle with 60 display units on the circumference of the clock face, among which 12 display units are made larger for displaying hour of time (hour display units) and the res... | 01/27/2004 |
| 6628571 | Watch The invention relates to a watch (2), wherein the time is represented by a plurality of display means (4) that are individually activated or deactivated. Said watch includes a first group (31) of display means for the number of hours, a second group (32) ... | 09/30/2003 |
| 6388642 | Bidirectional multispeed indexing control system A bidirectional multispeed indexing control system for a display unit which has an increment input and a decrement input so as to be controllable to sequentially index through an ordered list of discrete elements. The control system has a two-button user ... | 05/14/2002 |
| 6326883 | Device for monitoring the delivery of a speech A device and method for monitoring the delivery of a speech having selected time limits for specific speech types, includes a housing having a control panel, a clock display, and an array of different colored light emitting elements that are activated cor... | 12/04/2001 |
| 6229767 | Display device and electronic watch using the device A display device and an electronic watch permit various information to be clearly distinguished from a background when a solar battery is placed within a display area for displaying the information. A display device and the like include a polarizer, a liq... | 05/08/2001 |
| 6046401 | Display device integrated into a photovoltaic panel A display device comprising a photovoltaic (PV) panel adapted to simultaneously produce electrically needed to operate a display and form either the background or foreground of the said display. The PV panel comprises large continuous sheets of PV materia... | 04/04/2000 |
| 5917779 | Transformerless LED driving circuit A transformerless oven timer which uses a 20 pin microcontroller connected to light emitting diodes. The microcontroller has 2 Kbytes of 8 bit read only memory and has software etched therein. The microcontroller can transfer power and voltage to the ligh... | 06/29/1999 |
| 5898647 | Alternate carrier for a wrist instrument A carrier for a wrist instrument when it is removed from the wrist band comprises a case made in two pieces of identical construction which slide together and house the wrist instrument and its attachments. The two carrier sections each have a tongue exte... | 04/27/1999 |
| 4752919 | Clock with digital hour station and line of discrete, binary minute substations The time of day is displayed on clock face (10) through the use of two, two-digit numerical stations (20) and (30) and a minutes scale comprised of marks (40). The left-hand station (20) indicates the actual hour of the day and the right-hand station (30)... | 06/21/1988 |
| 4747086 | Digital watch with fluorescent display and mercury coated crystal A digital watch has a fluorescent display which is selectively actuated by depressing a button which extends through the watch casing. The watch crystal is formed from a scratch resistant mineral glass, and has a thin film mercury coating on the inner sur... | 05/24/1988 |
| 4597674 | Multiplex digital clock Different from a standard digital display utilizing separate digits for seconds, minutes and hours, an electronic timepiece which uses tow digits composed of triads of red, green and yellow L.E.D.s. Each L.E.D. color is synchronically sequenced and each p... | 07/01/1986 |
| 4448544 | Method and apparatus to digitally display the time of day A simplified dual format time display provides easy-to-read "count up" and "count down" digital readouts which indicate either the hour and the minutes after the hour or the next hour and the minutes before the next hour using conventionally positioned ho... | 05/15/1984 |
| 4290131 | Electronic timepiece An electronic timepiece having time indicating hands driven by a motor through a gear train, and having an analog-to-digital conversion system for time data comprising code disks rotated by the wheel train to provide hours and minutes information in digit... | 09/15/1981 |
| 4258431 | Electronic timepiece having an analog display device and a digital display device An electronic timepiece having both time indicating hands and an electro-optical time display, wherein individual digits of the electro-optical display can be selected for correction and wherein correction of a digit causes the time indicating hands to ad... | 03/24/1981 |
| 4255806 | Display means for chronometers with electro-optical elements A display for an electronic timepiece or the like has an analog electro-optical display comprising a plurality of segment electrodes radially disposed about a center point and at least one first counterelectrode each bridging at least two radial segment e... | 03/10/1981 |
| 4233681 | Electronic timepiece An electronic timepiece having liquid crystal or light-emitting diode display elements provides a logic network for flickering a part or all segments of the display element at a plurality of repetition rates and duty cycles, whereby additional intelligenc... | 11/11/1980 |
| 4207734 | LED Digital watch with user control of display timing and brightness A light emitting diode (LED) digital watch with circuitry which allows the watch user to adjust the amount of time the horological information is displayed and to adjust the brightness of the display.... | 06/17/1980 |
| 4205518 | Voltage conversion system for electronic timepiece A voltage conversion system for an electronic timepiece having a power source, which system generates power at lower voltage level than that of the power source for operating at least one of a frequency standard, a frequency converter, a time counter circ... | 06/03/1980 |
| 4202235 | Electronic musical box An electronic musical box is disclosed in which a musical score can be readily stored and reproduced and the musical score can be easily changed to another. The musical box includes a pulse generator for generating a unitary pulse for a note whose duratio... | 05/13/1980 |
| 4184319 | Digital display type electronic time piece A digital display type electronic watch, comprising a display having four or six digit display positions, two of which are adapted to selectively display the numeral or alphabet characters and the other of which are adapted to display the numeral characte... | 01/22/1980 |
| 4176516 | Arrangement for putting an electronic timepiece right with minute indication advanced at first An arrangement for correcting an electronic timepiece comprises a normally reset flip-flop that holds, when set, a "second" counter in a reset state. When a first switch is closed after being released, the timepiece cyclically gives a normal, a "minute," ... | 12/04/1979 |
| 4157007 | Asymmetric digital watch module An electronic watch module includes a circuit board having all the electronic watch components including a plurality of LED's and a CMOS integrated circuit device mounted on one side thereof defined as the face of the board. The board is of a generally fl... | 06/05/1979 |
| 4131864 | Low voltage compensator for power supply in a complementary MOS transistor crystal oscillator circuit A resistor is connected to the source of a C-MOS inverter included within a crystal oscillator circuit in order to reduce the power dissipation in the crystal oscillator circuit. A switching transistor is connected in parallel to said resistor, said switc... | 12/26/1978 |
| 4120148 | Logic circuit for use in two or three button digital watch A logic circuit subsection of a digital watch integrated circuit (IC) chip which enables the final watch electronics module to determine whether it is in a two or three button watch. The IC chip then uses this information to alter the pushbutton responses... | 10/17/1978 |
| 4114366 | Digital brightness control system A digital light-sensing control system for use in light sensitive equipment, such as a digital watch or a camera, is comprised of light sensor means such as a photo resistor, a digital brightness detector, and brightness control logic. The light sensor me... | 09/19/1978 |
| 4095414 | Electronic timepiece The specification describes an electronic timepiece with a display device, with an oscillator as a time base, with a frequency divider, which steps down the frequency of the oscillator to the desired clock frequency, with counting means for counting the c... | 06/20/1978 |
| 4095413 | Electronic timepiece An electronic timepiece with a display device, with an oscillator as a time base, with a frequency divider, which steps down the frequency of the oscillator to the desired clock frequency, with counting means for counting the clock pulses, and with decodi... | 06/20/1978 |
| 4084402 | Timing circuit for display sequencing in a digital wristwatch A digital timing circuit in a digital watch with a two digit display. When said circuit is activated by a push button, the two display elements first display the hours information, next are blank for a short duration, then display the minutes information,... | 04/18/1978 |
| 4075826 | Timing circuit for digital wristwatch A timing circuit in a digital watch with a two digit display. When the circuit is activated by a push button, the two display elements first display the hours information, for as long as the push button is depressed, and after release of the push button, ... | 02/28/1978 |
