Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7025499 | Device for testing a material that changes shape when an electric and/or magnetic field is applied A device for testing a material that changes shape when an electric and/or magnetic field is applied, in particular a piezoactive material, having a generator to generate an electric field and/or a magnetic field is described. This permits a rapid characterization o... | 04/11/2006 |
| 7004084 | Corn burner A corn-burning stove provides cooling for the corn in-feed auger and other adjacent components by combustion inlet air flow patterns. The inlet air flow transports pellet fuel through a distance within the fire pot which varies responsive to the flow rate of the inl... | 02/28/2006 |
| 6016020 | Method and apparatus using low voltage level actuator to control operation of electrical appliance A method and apparatus utilizing a low voltage level actuator and a signal processing device such as a microprocessor to selectively electrically couple an electrical appliance with a switch circuit associated with a power source of relatively high voltag... | 01/18/2000 |
| 5563811 | Microprocessor controlled drive circuit for a liquid nebulizer having a plurality of oscillators A circuit for causing an element to produce a substantially linear response to an input signal comprising an element for providing a response, a transistor oscillator circuit for providing an electrical output signal of variable amplitude to excite the el... | 10/08/1996 |
| 5325229 | Temperature control of crystals used in optical oscillators A crystal, which is mounted in a rotatable support for use in tuning the wavelength of an optical parametric oscillator, is maintained at a desired temperature by positioning a heating sleeve to thermally coupled to the crystal and its support in such a w... | 06/28/1994 |
| 5188286 | Thermoelectric piezoelectric temperature control A heat control and interface stress control principle for a material in which a piezoelectric member is positioned in contact with an interface of the material so that a heat generated expansion of the material generates a piezoelectric signal that contro... | 02/23/1993 |
| 4334168 | High frequency, thermostatically self controlled oscillator An autothermostatic high frequency oscillator comprising a piezoelectric resonator of the type having electrodes which are not adhered to the crystal. The contact between the part of the crystal 1 serving to support the vibrating part of the crystal and t... | 06/08/1982 |
| 4264802 | Thermocouple, multiple junction reference oven An improved oven (10) for maintaining the junctions of a plurality of reference thermocouples at a common and contant temperature. The oven (10) is characterized by a cylindrical body (12) defining a heat sink having an axially extended cylindrical cavity... | 04/28/1981 |
