"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7405669 | Sensor arrangement A sensor arrangement for detecting fogging on a glass pane, the arrangement including a support plate, a sensor element in thermal communication with the glass pane, wherein the sensor element is arranged on the support plate and is sensitive to moisture and a conta... | 07/29/2008 |
| 7363813 | Temperature and moisture probe A probe for measuring the temperature and moisture of a gas has an aspirated flow passage with a configuration that causes the gas to have turbulent flow and, therefore, to mix. A dry bulb thermometer and a wet bulb thermometer positioned in the flow passage downstr... | 04/29/2008 |
| 7266939 | Moisture-absorbing cellulose-based material and method for making same A moisture-absorbing material and method of making same are provided. Hollow fibrous tubes of cotton are sequentially dried, combed in a direction to substantially longitudinally align the hollow fibrous tubes of cotton, and stretched, twisted about and compressed i... | 09/11/2007 |
| 6561023 | Cellulose-based water sensing actuator An integrated water sensing actuator is based on a fibrous cellulosic material having anisotropic moisture-absorbing properties such that it's dried-in strain is greatest along one axis thereof. A plug of the dry and compressed fibrous cellulosic material... | 05/13/2003 |
| 6514721 | Air sampler for pathogens and psychrometrics An air sampler device and method for collecting airborne pathogens and psychrometric data for room or remote air samples wherein the sample volume is electronically controlled. Particulates in the air are caused to impact the surface of the growth/inhibit... | 02/04/2003 |
| 6499338 | Moisture management of textiles Moisture management indexes are determined for a textile sandwiched between two plates. Electrical conductors arranged in concentric opposing pairs are used to measure changes in electrical resistance of the fabric. A quantity of water (or other chosen li... | 12/31/2002 |
| 6276196 | Thermometric vapor sensor with evaporation surface having micropores A sensor for sensing in a gas stream a vapor of a liquid. The sensor includes a micropore and a wet temperature sensor. The micropore has an evaporation end and has a lumen to conduct liquid from a supply of the liquid for evaporation at the evaporation e... | 08/21/2001 |
| 6182507 | Mechanical water sensor A water sensor includes a housing that has at least one inlet port formed therein for allowing water to pass therethrough when submerged in water. A drive piston is mounted in the housing for sliding engagement therein. A water-activated driver is coupled... | 02/06/2001 |
| 6014890 | Fast response humidity and temperature sensor device An airway humidity sensor incorporating a small, dry thermocouple and small, wet thermocouple to measure cyclical humidity in inspiration and expiration by the psychrometric principle, the psychrometric component incorporating dialysis micro-tubing in con... | 01/18/2000 |
| 5581015 | Devices and methods for measuring temperature and vapor levels in a gas Devices relating to a psychrometer employing an infrared thermocouple aimed at a wet surface, and another infrared thermocouple aimed at a dry surface, are described. The wet surface is continuously supplied with liquid, for example, H2 O. The ... | 12/03/1996 |
| 5520048 | Automated flow measuring device including wet and dry bulb moisture analyzer An improved probe useful for measuring emissions of stack gases is equipped with a means for measuring moisture content and molecular weight of stack gases. A water feed tube is provided through the distal end of the probe and is fed water via a water fee... | 05/28/1996 |
| 5456025 | Apparatus for determining the humidity of exhaust air exiting a yankee dryer hood An adiabatic saturator receives a sample of exhaust air exiting a yankee dryer hood to determine the humidity of the exhaust air. The humidity is determined by temperature readings of the exhaust air, saturated air exiting the interior of a saturator cell... | 10/10/1995 |
| 5343747 | Normalized relative humidity calibration A humidity measurement process and humidity measurement scale are derived from the physics of relative humidity. Absolute moisture content is determined independent of any measurement or knowledge of the source temperature. The humidity measurement is equ... | 09/06/1994 |
| 5301551 | Wet bulb wicks for corrosive atmospheres Disclosed is a wick for a wet bulb, wherein the bulb is elongated with a free end and a supported end. An absorbent fabric has a portion configured as a folded over sleeve to at least partially closely surround the bulb. The sleeve has two ends, one of wh... | 04/12/1994 |
| 5148710 | Method and apparatus for determining the relative humidity of gaseous materials A method for determining the relative humidity of gaseous materials, preferably for determining the relative humidity of air in rooms, such as greenhouses, whereby, using psychrometric moisture measurement, the temperature of the stream of gas, the relati... | 09/22/1992 |
| 4872340 | Psychrometer A psychrometer having transducers producing two electrical signals respectively representing dry bulb temperature and wet bulb temperature, and an electrical circuit operating to derive a signal representing relative humidity in accordance with the formul... | 10/10/1989 |
| 4607790 | Cycle sequence time/temperature controller A cycle time/temperature controller for a combination corrosion tester includes a device for setting a loop number and a number of repetitions of that loop, a device for setting a sequence of test items within a loop including: a test temperature, a test ... | 08/26/1986 |
| 4409834 | Evapopsychrometer The evapopsychrometer is a special combination of an evaporimeter and a psychrometer. This combination was made possible by the application of a feeder in between and by the use of that portion of the wick which covers the bulb of one of the thermometers ... | 10/18/1983 |
| 4312226 | Comparator A comparator for selecting from two air sources, air which requires less energy to condition includes a humidity and a temperature sections for comparing relative humidities and dry-bulb temperatures of air from each of the sources. Each section comprises... | 01/26/1982 |
| 4111048 | Fluid parameter sensing apparatus An improved fluid parameter sensing apparatus particularly adapted for comparing one value of at least one air parameter as sensed at a first location in an air treatment system with at least one other value of the air parameter as sensed at at least a se... | 09/05/1978 |