US Patent Class 374
THERMAL MEASURING AND TESTING




Electronic
File
Wrappers


Electronic
Patent
Documents


Paper
Patent
Documents

Current as of: June, 1999
Click for Main Headings
Click DF for Definitions
Click for All Classes

Internet Version by PATENTEC © 1999       Terms of Use



Products
and
Services


  DF  CLASS NOTES
1  DF  THERMAL CALIBRATION SYSTEM
2  DF  .~ By thermal radiation emitting device (e.g., blackbody cavity)
3  DF  .~ By immersion in liquid having controlled temperature
4  DF  LEAK OR FLAW DETECTION
5  DF  .~ With heating or cooling of specimen for test
6  DF  DISTANCE OR ANGLE
7  DF  .~ Thickness, erosion, or deposition
8  DF  FLAMMABILITY TESTING
9  DF  EMISSIVITY DETERMINATION
10  DF  DIFFERENTIAL THERMAL ANALYSIS
11  DF  .~ Detail of electrical heating control
12  DF  .~ Detail of sample holder or support therefor
13  DF  .~.~ Formed by thermoelectric element
14  DF  THERMAL GRAVIMETRIC ANALYSIS
15  DF  BY APPLYING KNOWN THERMAL GRADIENT (E.G., INDICATION OF RESPONSE BY LOCATION)
16  DF  TRANSFORMATION POINT DETERMINATION (E.G., DEW POINT, BOILING POINT)
17  DF  .~ By change in optical property (e.g., transmission)
18  DF  .~.~ By reflection (e.g., polished surface)
19  DF  .~.~.~ Sensed by instrument (e.g., photocell)
20  DF  .~.~.~.~ Controlling heating or cooling
21  DF  .~ By electrical condition of specimen
22  DF  .~ By change in motion of movable element
23  DF  .~.~ Driven element
24  DF  .~ By change in pressure of flow rate
25  DF  .~ By thermal arrest (e.g., time-temperature curve)
26  DF  .~.~ Of molten metal (e.g., carbon content)
27  DF  .~ Between gaseous and liquid states
28  DF  .~.~ Dew point
29  DF  HEAT FLUX MEASUREMENT
30  DF  .~ By differential temperature measurement along undisturbed thermal gradient
31  DF  CALORIMETRY
32  DF  .~ Total radiant energy or power measurement
33  DF  .~ With control of heat added to or lost from a sample container (e.g., isothermal calorimetry)
34  DF  .~.~ With controlled adiabatic shield
35  DF  .~ Heat absorbing heigh temperature gas probe (e.g., enthalpy or fluid cooled probe)
36  DF  .~ Heat value of combustion (e.g., 'calorific value')
37  DF  .~.~ Having specified control of input of mixture
38  DF  .~.~ Having bomb or cartridge ignition chamber
39  DF  .~ Gain or loss of heat by heat utilizing load in path of heat exchange fluid
40  DF  .~.~ Determined by combining flow rate and temperature signals of heat exchange fluid
41  DF  .~.~.~ Signals combined electrically
42  DF  .~ Throttling calorimeter (e.g., steam quality)
43  DF  DETERMINATION OF INHERENT THERMAL PROPERTY (E.G., HEAT FLOW COEFFICIENT)
44  DF  .~ Thermal conductivity
45  DF  THERMAL TESTING OF A NONTHERMAL QUANTITY
46  DF  .~ With loading of specimen (e.g., stress or strain)
47  DF  .~.~ Cyclic
48  DF  .~.~.~ Torsional
49  DF  .~.~ Tensile
50  DF  .~.~.~ With detail of heating or cooling structure
51  DF  .~.~ Compressional
52  DF  .~.~ Bending or flexing
53  DF  .~ Of cure or hardenability
54  DF  .~ Of fluid volume
55  DF  .~ Expansion or contraction characteristics (e.g., dilatometry)
56  DF  .~.~ Including electrical sensor
57  DF  .~ Of susceptibility to thermally induced deteriouration, flaw, or failure
100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER)
101  DF  .~ Composite temperature-related paramenter
102  DF  .~.~ Time-temperature relationship (e.g., integral, deterioration, change)
103  DF  .~.~.~ Time-temperature integration performed by particular circuit arrangement
104  DF  .~.~.~ Peak (maximum or minimum) with respect to time
105  DF  .~.~.~.~ Indicating tube with sensing material return prevention
106  DF  .~.~.~.~ Permanent visual indication (i.e., irreversible)
107  DF  .~.~.~ Rate of change
108  DF  .~.~.~ Degree-days
109  DF  .~.~ Climate related (e.g., wind-chill factor, discomfort index)
110  DF  .~.~ Plural spaced temperature function
111  DF  .~.~.~ Highest or lowest of spaced temperatures
112  DF  .~.~.~ Difference or gradient
113  DF  .~.~.~.~ By thermoelements connected in series opposition
114  DF  .~.~.~.~ By current modifying elements in circuit (e.g., bridge)
115  DF  .~.~.~ Space average
116  DF  .~.~.~ By single sensor (e.g., elongate or with plural fluid intakes)
117  DF  .~ By a vibratory effect (e.g., resonant frequency, acoustical)
118  DF  .~.~ Resonant frequency by fluid flow
119  DF  .~.~ Vibration velocity (e.g., echo timing)
120  DF  .~ In spaced noncontact relationship to specimen
121  DF  .~.~ By thermally emitted radiation
122  DF  .~.~.~ By microwave arrangement
123  DF  .~.~.~ Transparent material measurement or compensation (e.g., spectral line, gas, particulate suspension
124  DF  .~.~.~ With scanning or temperature distribution display
125  DF  .~.~.~ With fluid flow purging device
126  DF  .~.~.~ Having emissivity compensating or specified radiating surface
127  DF  .~.~.~ Having significant frequency limitation or relationship (e.g., peak, ratio)
128  DF  .~.~.~ Having significant signal handling circuitry (e.g., linearizing, emissivity compensation)
129  DF  .~.~.~ Comparison with radiation reference standard
130  DF  .~.~.~ Optical system structure (e.g., lens)
131  DF  .~.~.~.~ With radiation conducting element
132  DF  .~.~.~ Sensor or mounting temperature control
133  DF  .~.~.~ Ambient temperature compensated (e.g., dummy sensor)
134  DF  .~.~ Extrapolation (e.g., simulation, heat flow)
135  DF  .~.~ By fluid flow within or to sensor (e.g., convection, heat transfer, differential pressure)
136  DF  .~ Geophysical (e.g., well bore, underwater)
137  DF  .~ Temperature distribution or profile
138  DF  .~ With fluid flow deflector
139  DF  .~ Of molten metal
140  DF  .~.~ Lance (e.g., consumable)
141  DF  .~ Combined with diverse art device
142  DF  .~.~ With other measuring device
143  DF  .~.~.~ Pressure
144  DF  .~.~ With combustion engine
145  DF  .~.~.~ Cooling system
146  DF  .~.~.~.~ Radiator cap mounted thermometer
147  DF  .~.~ With fluid carrying conduit (e.g., shower pipe)
148  DF  .~.~.~ Sensor within conduit
149  DF  .~.~ With cooking compartment or door thereof (e.g., oven)
150  DF  .~.~ With bottle (e.g., nursing)
151  DF  .~.~ With confection or infant pacifier
152  DF  .~.~ With electrical component (e.g., transformer)
153  DF  .~.~ With roll or rotary specimen or support
154  DF  .~.~.~ With coupling between rotating sensor and stationary electrical circuitry
155  DF  .~.~ With percing element
156  DF  .~.~ With float
157  DF  .~.~ With sampling cup
158  DF  .~ With removable cover for sensor (e.g., disposable sheath)
159  DF  .~ Nonelectrical, nonmagnetic, or nonmechanical temperature responsive property
160  DF  .~.~ Melting or softening
161  DF  .~.~ Change of optical property
162  DF  .~.~.~ Color
163  DF  .~ By electrical or magnetic heat sensor
164  DF  .~.~ With preheated sensing probe
165  DF  .~.~ With heat exchanger or conductor
166  DF  .~.~ At plural zones
167  DF  .~.~.~ Scanning
168  DF  .~.~ With self-rebalancing arrangement (e.g., servo-potentiometer, thermal link)
169  DF  .~.~ With thermal lag compensation
170  DF  .~.~ Digital output
171  DF  .~.~.~ With digital linearizing circuitry
172  DF  .~.~ With compensation for sensor nonlinearity or lead impedance
173  DF  .~.~.~ By feedback in amplifier circuit or with constant current source in circuit
174  DF  .~.~ By conductive fluid or work function within sensor (e.g., ionization)
175  DF  .~.~ Thermal noise generated in conductor
176  DF  .~.~ Including sensor having hysteresis or cryogenic property (e.g., ferromagnetism, superconductivity)
177  DF  .~.~.~ Ferroelectric
178  DF  .~.~ By barrier layer sensing element (e.g., semiconductor junction)
179  DF  .~.~ By thermoelectric potential generator (e.g., thermocouple)
180  DF  .~.~.~ Specimen is part of thermoelectric circuit
181  DF  .~.~.~ Reference junction compensation
182  DF  .~.~.~ Reference junction temperature control
183  DF  .~.~ By current modifying sensor
184  DF  .~.~.~ Reactive element (e.g., capacitive)
185  DF  .~.~.~ Detail of resistive sensor
186  DF  .~ With specified recording arrangement
187  DF  .~ Mechanical (e.g., expansion or contraction of materials)
188  DF  .~.~ Having electrical indication
189  DF  .~.~ Plural zones (e.g., indoor-outdoor)
190  DF  .~.~ Indicating tube type
191  DF  .~.~.~ With optical element (e.g., magnifying)
192  DF  .~.~.~ With holder for shaking
193  DF  .~.~.~ Having specified cross section
194  DF  .~.~.~ With support or housing
195  DF  .~.~ With detail of motion transmitting mechanism
196  DF  .~.~ One sensing element within another
197  DF  .~.~ With compensation
198  DF  .~.~ With adjustment
199  DF  .~.~.~ Mechanical loading of sensor
200  DF  .~.~.~ Adjustment of limit stop
201  DF  .~.~ Expanding fluid
202  DF  .~.~.~ With distinct pressure transmitting fluid
203  DF  .~.~.~ Bourdon tube or bellows
204  DF  .~.~ Multiple distinct sensing elements
205  DF  .~.~ Compound sensing element (e.g., bimetallic)
206  DF  .~.~.~ Coil
207  DF  .~.~.~.~ Helix
208  DF  HOUSING, SUPPORT, OR ADJUNCT
209  DF  .~ Removable probe cover
210  DF  MISCELLANEOUS