Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7426862 | Thermal accelerometer with automatic zero control A thermal accelerometer comprising two detector strands having resistivity that is temperature sensitive, a detector member for detecting a temperature difference between the detector strands, a feedback member for establishing temperature equilibrium between the de... | 09/23/2008 |
| 7424826 | Single chip tri-axis accelerometer Single chip 3-axis thermal accelerometer devices include a substrate, at least one cavity etched in the substrate, a fluid disposed in the cavity, a bridge structure suspended over an opening of the cavity, and a plurality of heater elements and temperature sensing ... | 09/16/2008 |
| 7392703 | Z-axis thermal accelerometer A thermal accelerometer device that allows up to three axes of acceleration sensing. The thermal accelerometer includes a substantially planar substrate, a cavity formed in the substrate, a heater element, and at least first and second temperature sensing elements. ... | 07/01/2008 |
| 7305881 | Method and circuitry for thermal accelerometer signal conditioning A thermal accelerometer device that provides a compensation for sensitivity variations over temperature. The thermal accelerometer includes signal conditioning circuitry operative to receive analog signals representing a differential temperature is indicative of a s... | 12/11/2007 |
| 7267779 | Thermally efficient micromachined device A micromachined device for efficient thermal processing at least one fluid stream includes at least one fluid conducting tube having at least a region with wall thickness of less than 50 μm. The device optionally includes one or more thermally conductive structures... | 09/11/2007 |
| 7080553 | Micro-accelerometer A micro-accelerometer includes first and second closed cavities, into each of which an equal quantity of gas is introduced. A membrane partitions the symmetrical first and second cavities. Temperature sensors are provided within the first and second cavities, respec... | 07/25/2006 |
| 7069785 | Thermal bubble type micro inertial sensor A thermal bubble type micro inertial sensor formed by micromachining technology includes a substrate, a heater arranged on the substrate, four temperature sensing members, a cap arranged above the substrate to cover and encapsulate the heater and the temperature sen... | 07/04/2006 |
| 7047808 | Accelerometer An accelerometer having a plate-like proof mass (1), flexible mounting legs (2) each co-planar with the proof mass (1), a ring-like support (3), in which the proof mass (1) is moveably mounted, with each mounting leg (2) bei... | 05/23/2006 |
| 7009487 | Fabrication of nano-scale temperature sensors and heaters The method for the fabrication of nano scale temperature sensors and nano scale heaters using focused ion beam (FIB) techniques. The process used to deposit metal nano strips to form a sensor is ion beam assisted chemical vapor deposition (CVD). The FIB Ga+ | 03/07/2006 |
| 6930487 | Method for electronic damping of electrostatic positioners Electronic damping may be provided to an electrostatic positioner by developing a signal proportional to the velocity of the movable positioner plate and then changing the voltage applied to the positioner in proportion to this velocity signal to oppose the velocity... | 08/16/2005 |
| 6666088 | Accelerometer without proof mass An accelerometer has a substrate with a cavity therein, a heater extending over the cavity, and a pair of temperature sensitive elements each spaced apart from the heater a distance of 75-400 microns also extending over the cavity. On passing an electrica... | 12/23/2003 |
| 6182509 | Accelerometer without proof mass An accelerometer having a substrate with a cavity therein, a heater extending over the cavity, a pair of temperature sensitive elements extending over the cavity equidistant from the heater, and an electrical conductor couplable to an external power sourc... | 02/06/2001 |
| 5945601 | Acceleration sensor with temperature resistor elements A very small and economical acceleration sensor which can detect acting acceleration with high sensitivity and high accuracy by precisely processing a semiconductor substrate and the like by using the photoengraving technique in a semiconductor manufactur... | 08/31/1999 |
| 5719333 | Acceleration sensor A very small and economical acceleration sensor which can detect acting acceleration with high sensitivity and high accuracy by precisely processing a semiconductor substrate and the like by using the photoengraving technique in a semiconductor manufactur... | 02/17/1998 |
| 5279040 | Fluid-based acceleration and tilt sensor A sensor (10) for measurement of acceleration and/or tilt of a movable object, particularly a motor vehicle, features an interior space (12) partially filled with fluid (15). Within that space, at least two heatable, temperature-sensitive electrical circu... | 01/18/1994 |
| 5044201 | Double-integrating silicon acceleration sensing device A double integrating silicon acceleration sensing device which is solid state and micromachined measures the acceleration of an object and determines the distance travelled by that object through its trajectory. The device comprises a hermetically sealed ... | 09/03/1991 |
| 4249420 | Bearing preload assembly for use in an oil filled accelerometer A pendulous type of accelerometer is disclosed herein and includes a sealed housing defining an oil filled internal chamber, a pendulous member located within the housing chamber and a pair of bearing mechanisms for pivotally supporting the pendulous memb... | 02/10/1981 |
| 3998104 | Fluid pressure pulsed rebalanced accelerometer A force rebalanced accelerometer utilizing a spherical proof mass disposed in a fluid and in which fluid pressure pulses developed by positive displacement pump are used to balance inertial forces.... | 12/21/1976 |
| 3971332 | Vehicle parts indicating instrument An indicating instrument for vehicles incorporating a piston which is so arranged that a slight movement causes a much larger displacement of a liquid level in a liquid column which is visible through a transparent housing of the instrument. In one embodi... | 07/27/1976 |
