Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8418524 | Non-invasive sensor calibration device A calibration device according to embodiments of the disclosure is capable of being used with a non-invasive sensor. Certain embodiments of the calibration device simulate a human pulse by varying the volume of blood being measured by the optical sensor. Further, em... | 04/16/2013 |
| 7422907 | Process for measuring mercury concentration within hydrocarbons A process for measuring the mercury concentration within a hydrocarbon is provided that enables the mercury concentration to be measured simply and quickly, and with good reliability and good reproducibility. A process for measuring the mercury concentration within ... | 09/09/2008 |
| 7415864 | Orifice test device for protective mask testers An orifice test calibration device tests the functionality of protective mask testers. The orifice test calibration device has a semi-rigid tubular channel with one end for sealing the flow outlet port of the protective mask tester and a second end for sealing the v... | 08/26/2008 |
| 7189361 | Analytical device with lightguide Illumination of capillary and microgrooves arrays An analytical cell including a lightguide with a plurality of conduits filled with a migration medium. The medium, the lightguide and a surrounding medium have refractive indices selected such that light entering the lightguide is internally reflected within the lig... | 03/13/2007 |
| 5905920 | Camera with monitoring and testing of camera shutter operations A camera which prevents accidents which could lead to damage to the shutter when performing shutter time tests in the opened state of the back cover of a camera. The camera has a shutter to limit the exposure time of the recording medium which has been lo... | 05/18/1999 |
| 5895132 | Exposure precision tester and exposure precision testing method for camera In an exposure precision tester for a camera, including a flexible wiring board where a photometric sensor is implemented is contained in a case. The case has an appearance similar to that of a film cartridge loaded by drop-in operation and is insertable ... | 04/20/1999 |
| 5610327 | Knock sensor-triggered timing light with visible laser retro-reflecting control A diesel timing light includes a flash circuit for flashing a xenon lamp in response to ignition events sensed by a knock sensor. A trigger circuit enables the flash circuit only in the presence of an enable signal, which is generated by a sensing circuit... | 03/11/1997 |
| 5457514 | Shutter instrumentation device for detecting the opening and the closing of a camera shutter A camera having a mechanism to determine the precise times at which a shutter or shutter blinds open or close an aperture. The camera measures the actual time in which shutter blinds pass over the aperture by utilizing a projection unit, positioned on one... | 10/10/1995 |
| 4454752 | Test circuit for use in coagulation instrument In a photometric coagulation instrument a synthetic clot signal is generated so that the operation of the instrument can be checked without the need to measure the actual clotting time of a control plasma sample.... | 06/19/1984 |
| 4335945 | Camera with structure for adjusting lens disc velocity and calibration method A camera, including an automatic lens focusing system of the type wherein a disc holding a plurality of different lens elements is accelerated by an arm of a torsion spring to effect disc rotation for sequentially presenting the lens elements at a focusin... | 06/22/1982 |
| 4096732 | Camera testing methods and apparatus Effective shutter speed, focal plane exposure and film transport frame rate measurements are taken and displayed in user oriented format by a computing method and system for testing still and cinematic cameras. An analog signal pulse is generated that is ... | 06/27/1978 |
| 4064736 | Method and apparatus for measuring performance times of a shutter apparatus A method and apparatus for measuring times for leading and trailing curtains of a camera shutter apparatus to traverse a focal plane aperture, an exposure time determined by the initial width between the two curtains, a photoflash delay time measured betw... | 12/27/1977 |
| 4031739 | Autoranging method and system for testing the speeds of a camera shutter A camera shutter tester that automatically displays a standard shutter speed nearest to the actual speed of the shutter being tested and displays a ratio of that speed to the standard speed. A photodetector is placed in the focal plane of the camera that ... | 06/28/1977 |
