Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 4702613 | Electronic timepiece driven by a plurality of stepping motors and powered by a solar cell An electronic timepiece which indicates time with a plurality of hands driven by a plurality of motors respectively, has an electric source comprised of energy supplementary means such as solar batteries and accumulating means such as secondary batteries.... | 10/27/1987 |
| 4676662 | Large clock driven by solar cell A large clock with a dial plate having short and long hands driven by a solar cell. The clock is provided with a sealed box-like long hand and a circular chain around the dial plate. The long hand slowly progresses around the circular chain which is engag... | 06/30/1987 |
| 4666313 | Timepiece and drive unit therefor A solar timepiece comprises a drive unit including a commercially available battery clock mechanism mounted to the back of a support plate for the solar cells. The clock mechanism includes hands arbors which pass through an opening in the support plate. T... | 05/19/1987 |
| 4653931 | Self-charging electronic timepiece An electronic timepiece including timekeeping circuitry and a primary power source for converting externally applied energy to electrical energy for powering the timekeeping circuitry. The electronic timepiece also includes a secondary power source for st... | 03/31/1987 |
| 4634953 | Electronic equipment with solar cell An output voltage of a solar cell is supplied to a voltage converter. The voltage converter converts the input voltage into a predetermined voltage, and supplies it to a capacitor. The capacitor is charged by the output current of the voltage converter. T... | 01/06/1987 |
| 4627736 | Thin card-type electronic apparatus A thin electronic apparatus comprises as its primary structural components a substrate carrying key counter contacts and a first wiring pattern thereon, and an elastic sheet carrying key symbols on one surface thereof and a second wiring pattern on the ot... | 12/09/1986 |
| 4577286 | Solar energy-powered calculator or the like Disclosed is a solar cell-powered calculator or the like which features an integrated unit comprising solar cells and a protective filter which provides easier handling and minimum damage to the solar cells during handling processes. Such a solar cell-pow... | 03/18/1986 |
| 4553851 | Timepiece operated by solar cells A timepiece operated by solar cells wherein the timepiece includes a base plate defining thereabove a base with a time indicator. Mounted on the base plate is a driver for driving the time indicator. A plurality of circumferentially spaced solar cells are... | 11/19/1985 |
| 4409538 | Charge control circuit A charge control circuit has an excess charge detecting circuit for preventing the excess charge of a secondary battery responsive to the voltage of the secondary battery, and a switching circuit responsive to the output of the excess charge detecting cir... | 10/11/1983 |
| 4371269 | D-C Voltage converter for a wristwatch A d-c converter for inclusion in a miniature electronic device, such as an electronic wristwatch having a d-c supply source, the converter functioning to increase or decrease the voltage of this source. The converter includes a transformer whose primary i... | 02/01/1983 |
| 4369498 | Photoluminescent powered calculator A photoluminescent dye is suspended in a transparent medium. When exposed to light, the dye re-emits light in a narrow frequency range. Photovoltaic cells responsive to the re-emitted light are arranged around the sides of the collector medium, and are el... | 01/18/1983 |
| 4311953 | Charger using one or more solar batteries A charger, which is useful to power a variety of compact type electronic appliances such as an electronic wristwatch, includes one or more solar batteries as a primary battery, and a sealed type silver oxide battery as a secondary battery. Both the amount... | 01/19/1982 |
| 4296489 | Electronic timepiece An electronic timepiece including a primary battery as a power source, and a solar battery for charging the primary battery is provided. The electronic timepiece includes a solar battery for producing a charging current in response to solar light being in... | 10/20/1981 |
| 4291266 | Device for charging an accumulator from an electrical energy source more particularly for an electronic watch The invention relates to an electronic device for charging an accumulator from an electric energy source, more particularly one or more solar cells, intended in particular for an electronic wristwatch. The device represents the equivalent of an ideal diod... | 09/22/1981 |
| 4276629 | Solar battery timepiece A solar battery timepiece has a structure of a module, a base plate on the module, a solar battery cell on the base plate, an insulating flexible sheet provided with a print wiring and interposed between the base plate and the solar battery cell, and a di... | 06/30/1981 |
| 4261049 | Wristwatch with solar cells A wristwatch includes a module, and a display section overlying the module. The module has a recess which surrounds the display section and which accommodates a solar cell unit having a window therein for accommodating the display section. The unit is loc... | 04/07/1981 |
| 4258310 | Selectively adjustable voltage detection integrated circuit A voltage detection integrated circuit including a voltage regulation circuit for controlling the operation thereof is provided. The voltage detection integrated circuit includes a reference voltage circuit for producing a predetermined reference voltage,... | 03/24/1981 |
| 4234947 | Solar battery powered timepiece A solar battery powered electronic timepiece of the type wherein a watch glass and a base plate supporting a solar battery are secured in an annular recess in a watch case. The base plate is positioned on a bottom surface of the recess and secured in posi... | 11/18/1980 |
| 4165477 | Instrument intended to be carried at the wrist A wrist carried instrument includes a rechargeable electric energy source for providing power to the instrument. The energy source is recharged by a pair of generators, both operatively coupled to the source and generating complementary recharging current... | 08/21/1979 |
| 4095217 | Combined liquid crystal display and photovoltaic converter By replacing the passive reflector in a liquid crystal display with a photovoltaic converter, the dual results of light reflection for display visibility and electrical energy generation for operation of the display and associated circuitry, such as elect... | 06/13/1978 |
| 4087960 | Solar battery wristwatch A solar-battery wristwatch makes use of a flexible printed-circuit board for connecting the cells of the battery in series and for connecting said battery with a storage battery. The arrangement eliminates the need for connecting wires and extraneous supp... | 05/09/1978 |
| 4038104 | Solar battery A solar battery is manufactured by forming individual cells in a wafer, mounting the wafer on a substrate and separating the cells by the use of a thin saw. The channel thus formed between the cells is filled with an insulating material to prevent the acc... | 07/26/1977 |
| 3979656 | Battery charging circuit A battery charging circuit for effecting efficient charging of a battery by a solar energy source is provided. A voltage detecting circuit is coupled in parallel with a battery for detecting each state of charge of same, the detecting circuit including a ... | 09/07/1976 |
| 3961472 | Solid state electronic timepiece A wristwatch has a plurality of light emitting digital readout elements which are located along one end of the watch above the watchband. A hermetically sealed time capsule is enclosed within the watch case and includes an integrated circuit chip which di... | 06/08/1976 |
