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Class 374/22 - By change in motion of movable element


Subclass of Class 374 - Thermal measuring and testing
Definition: Subject matter wherein the test is performed by determining
No. of patents: 10
Last issue date: 03/22/2005


NumberTitleIssue Date
6869024Self-adjusting mechanism for a thermostat responsive to humidity
A first mounting plate attachable to the wall has a hub on which a second enhanced mounting plate is rotated by a humidity sensing spring to decrease the setting registered by the mercury bulb switch when moist air is present and increase the setting when drier air ...
03/22/2005
6425686Glass transition temperature measurement system
A glass transition temperature Tg measurement system includes a probe point penetrating into a sample under test that has been heated by a heater to a temperature where the sample undergoes a phase change from a solid to a semisolid. A thermocouple is use...
07/30/2002
6231228Melting point determination apparatus and method
A device and method is disclosed for determining the melting point of a sample material utilizing an infrared thermometer to measure the indicated temperature of the sample material while under pressure as such sample material is being heated. Upon meltin...
05/15/2001
6155098Dewpoint sensor
A dewpoint sensor comprises a pressure vessel having an entry port, an exit port, and a temperature controlled plate. A quartz crystal resonator is housed within the pressure vessel and disposed in intimate contact with the temperature controlled plate. A...
12/05/2000
6073479Dewpoint sensor
A dewpoint sensor comprises a pressure vessel having an entry port, an exit port, and a temperature controlled plate. A quartz crystal resonator is housed within the pressure vessel and disposed in intimate contact with the temperature controlled plate. A...
06/13/2000
5682331Motion tracking using applied thermal gradients
An object tracking and motion control system includes a thermal marking unit such as a laser for inducing localized thermal indicia on objects. A thermal tracking unit, typically a two dimensional thermal sensing array, is positioned to measure movement o...
10/28/1997
5454257Method of determining wax appearance point of a complex real fluid crude liquid petroleum composition and of determining quantity of wax precipitated therefrom
A wax appearance point in a petroleum produce is determined by measuring change in volume as a function of temperature. The appearance point appears as a deviation from a rectilinear graph. The quantity of wax which appears is determined by comparing a me...
10/03/1995
5209566Dynamic thermomechanical analyzer
A testing apparatus (dynamic thermomechanical analyzer) for analyzing a change of the state of a sample from a fluid state to a solid state. The dynamic thermomechanical analyzer includes: a) a vessel in which the sample is set; b) a spring standing in th...
05/11/1993
4567849Dipping liquid phase epitaxy for HgCdTe
For HgCdTe liquid phase epitaxy (LPE), in situ differential thermal analysis apparatus is used to precisely monitor the liquidus temperature of each HgCdTe melt. The neutral body, e.g. a slug of copper enclosed in a silica ampoule, is placed near the LPE ...
02/04/1986
3951601Determination of softening temperatures for thin films
A technique is provided for the determination of the temperature at which thin films of, for instance plastics materials, soften. The thin film under test is disposed upon a conductive substrate and forms the dielectric of a capacitor, one electrode of wh...
04/20/1976
 
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