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"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 |
| 7344089 | Wireless air-volume damper control system A wireless air-volume damper control system for regulating air balance in a ducted network, the damper control system having one damper or more damper units installable in the ducted network at locations where air flow in the terminal can be adjusted, the damper uni... | 03/18/2008 |
| 6981649 | Electronic control for heating apparatus A power control device for automatically and proportionately metering power to a heating device used to create a warm microenvironment conducive to the health and growth of an animal during a predetermined incubation period is herein disclosed. The power control dev... | 01/03/2006 |
| 6725914 | Double duct changeover HVAC system The invention is a double duct changeover HVAC system, which uses two conditioned air sources to deliver air into two main duct systems. The two main duct systems are routed toward the exterior exposures of a building, and converge into a single duct which is routed... | 04/27/2004 |
| 6304803 | HVAC control system for an automobile A heating, ventilation, and air conditioning system for a vehicle including a front HVAC control system that communicates with a rear HVAC control system. The rear HVAC control system includes a control panel having mode, temperature, and blower speed con... | 10/16/2001 |
| 6175782 | System and method for adjusting climate control in vehicles In a multimedia information and control system for use in an automobile, at least one interface is employed which enables a user to access information concerning the automobile and control vehicle functions in an efficient manner. The user may select one ... | 01/16/2001 |
| 5603225 | Multi-type air conditioner address setting method and address setting device A multi-type air conditioner address setting method and address setting device for automatically setting an address with a simple structure. A dummy address sent from an exterior device is stored in an interior device. The interior device determines wheth... | 02/18/1997 |
| 4300623 | Integrated multi-duct dual-stage dual-cooling media air conditioning system A multi-duct air conditioning system integrating ventilation, humidity control, filtering, chilling and heating, and distribution of liquids, embodied in a combination of means operating at peak efficiency under varied conditions, characterized by a dual-... | 11/17/1981 |
| 4274475 | Control apparatus for regulating building perimeter temperature change system A control apparatus for regulating a building perimeter temperature change system, which may be a heating system, a cooling system, or both. The control apparatus operates in conjunction with a central heating system which operates to adjust temperatures ... | 06/23/1981 |
| 4215408 | Temperature control of unoccupied living spaces Apparatus is provided for controlling, during unoccupied periods, the operation of an HVAC system and perimeter heating system providing hot air and hot fluid, respectively, to a temperature controlled living space having occupied and unoccupied periods, ... | 07/29/1980 |
