Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7440861 | Concept of compensating for piezo influences on integrated circuitry The inventive circuitry on a semiconductor chip includes a first functional element having a first electronic functional-element parameter that exhibits a dependence relating to the mechanical stress present in the semiconductor circuit chip in accordance with a fir... | 10/21/2008 |
| 7437260 | Concept of compensating for piezo influences on integrated circuitry A semiconductor chip includes a first functional element having a first electronic functional-element parameter exhibiting a dependence relating to the mechanical stress present in the semiconductor circuit chip, and being configured to provide a first output signal... | 10/14/2008 |
| 7330803 | High resolution time interval measurement apparatus and method A time interval measurement apparatus and method counts the total number of full clock time periods between two measurement signals. Clock fractional time periods are generated between each of the two measurement signals and the next leading edge of a full clock tim... | 02/12/2008 |
| 6675646 | Liquid-quantity monitoring apparatus and liquid-consuming apparatus with the same A liquid-quantity monitoring apparatus includes: a piezoelectric device having a vibrating part capable of being exposed at least partly to a liquid-containing space, the piezoelectric device being capable of vibrating the vibrating part by a given drive ... | 01/13/2004 |
| 6619126 | Mechano-electrical sensor A mechano/electrical sensor senses force or vibration and delivers at least one electrical signal that is a function of the sensed force or vibration. The sensor has at least one inner body supported by at least one piece of electric support structure tha... | 09/16/2003 |
| 6036358 | System and method for diagnosing mechanical clocks A system and method are provided for calculating the period of a mechanical clock while minimizing the effects of extraneous noise. The method of the invention senses three sounds from the clock and calculates the period of the clock based on those three ... | 03/14/2000 |
| 6034501 | Device for driving stepper motor type measuring instrument A measure obtained by a counting circuit (2) is converted by a processing circuit (3) to an indication angle signal at a predetermined conversion cycle. A smoothing circuit (4) comprises a division circuit (11) for calculating the difference between the p... | 03/07/2000 |
| 5325313 | System for measuring timepiece beat interval accuracy The invention is of a method of measuring timepiece beat interval accuracy comprising, according to the embodiment shown, a microphone and amplifier to transform the mechanical beat of a timepiece to an electrical signal and amplify that signal. The signa... | 06/28/1994 |
| 4665735 | Device for detecting metallic ticking sounds An improved device for detecting ticking sounds produced from inside some mechanism, is described. The purpose of the device is to sense the ticks and produce a well defined electrical pulse for each tick while rejecting other noises and electrical interf... | 05/19/1987 |
| 4335596 | Device for measuring the operation of a timepiece movement A device for measuring a characteristic magnitude of the operation of a timepiece movement is disclosed, in which measuring pulses are generated in response to vibrations of the movement for measuring the time intervals between vibrations reflecting the o... | 06/22/1982 |
| 4201077 | Method for measuring the rate or the frequency error of a quartz timepiece and measuring apparatus for carrying out this method A method and apparatus for measuring the frequency error of a timebase frequency of a quartz timepiece, relative to a reference frequency. An input signal having a frequency equal to the timepiece timebase frequency is produced from the timepiece. The inp... | 05/06/1980 |
| 4028927 | High precision timepiece pace measuring device A high precision timepiece pace measuring device wherein a first mask circuit inhibits the entry of a first signal of the timepiece so as to initiate a measurement of the pace of the timepiece from a second signal of the timepiece, while a second mask cir... | 06/14/1977 |
| 4014205 | Electronic clock regulator An illustrative embodiment of the present invention includes an apparatus for electronically timing the period of mechanical or electromechanical clocks. A continuously variable preselected ideal clock period is digitally entered into the apparatus. The r... | 03/29/1977 |
| 4012941 | Method of and apparatus for measuring the amplitude of oscillation of the balance of a timepiece movement A method of and apparatus for measuring the amplitude of oscillation of the balance of a timepiece movement having an escapement adapted for disengagement and engagement, successively, the balance having a predetermined angle of lift. The time intervals b... | 03/22/1977 |
| 3946592 | Digital time error measuring arrangement The invention resides in an improved time error measuring device or test bench for watches. The device includes a sensing microphone for sensing the stepping movement of the watch under test and in the form of a series of electric signal pulses. It furthe... | 03/30/1976 |
| 3939689 | Method and apparatus for distinguishing aperiodic noise input signals from periodic input signals during measurement A method and apparatus for detection whether an input signal is periodic or aperiodic, wherein reference pulses at a constant frequency are added during a first interval determined by a number of cycles of the input signal and reference pulses at the same... | 02/24/1976 |
