Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7617988 | Intrusion barrier and thermal insulator for thermostat A wall plate for a wall thermostat blocks intrusion air from the thermostat. The wall plate has a wire passage aligned with the wall penetration through which the thermostat wires emerge. The wall plate member directs any intrusion air that flows out the penetration... | 11/17/2009 |
| 6223994 | Thermal expansion valve The invention provides a thermal expansion valve for a car air conditioner, which prevents a hunting phenomenon. The thermal expansion valve is provided with a refrigerant passage from an evaporator toward a compressor formed in an inner portion thereof a... | 05/01/2001 |
| 6145752 | Temperature monitoring and control system This invention generally relates to a thermostat system for use in thermal regulation of an environment. This invention involves thermal regulation systems for controlling the temperature of an environment and the thermostat systems used in thermal regula... | 11/14/2000 |
| 5901562 | Temperature control system for a multi compartment refrigerator A mechanism for controlling the temperature in and the flow of air between freezer and fresh food compartments in a refrigerator is constituted by a pre-assembled control unit including a housing within which is mounted fresh food and freezer compartment ... | 05/11/1999 |
| 5062571 | Temperature sensing control for refrigeration system A sensing element for controlling the unloading of a compressor including a finned tube for placement in firm heat conducting engagement within a tube of a shell evaporator and containing a thermocouple which senses either the temperature of fluid within ... | 11/05/1991 |
| 4507935 | Overheat detecting device of an air conditioning system for automotive vehicles In an air conditioning system for automotive vehicles, an overheat detecting device is provided for detection of overheating of refrigerant circulated in the air conditioning system. The overheat detecting device is arranged in an outlet pipe connected to... | 04/02/1985 |
| 4502461 | Griddle control for minimum temperature variation A temperature control means for a cooking griddle wherein a tubular thermostat is clamped to the bottom of the griddle plate, shielded from direct engagement by the heating medium and having a predetermined portion of the temperature sensing bulb of the t... | 03/05/1985 |
| 4476067 | Device for controlling the operation of a carburetor A device for controlling the operation of a carburetor comprising a wax valve fitted into a bore formed in the device housing. A wax valve holder is fitted into the bore so as to surround the temperature sensitive portion of the wax valve. A cooling water... | 10/09/1984 |
| 4216902 | Thermostatic control valve A thermostatically controlled valve for heated fluid flowing through a conduit has a valve seat and cooperating valve mechanism to permit the flow of fluid through the seat; a housing, open at one end, is secured to the conduit at the other end over the v... | 08/12/1980 |
| 4157158 | Temperature responsive valve assembly A temperature responsive valve assembly includes a body having an inlet port and first and second outlet ports, a thermostatic bimetal disk disposed within the body and responsive to a variation in temperature to change the curvature thereof from a first ... | 06/05/1979 |
| 3995441 | Beverage dispensing system A beverage dispensing system has a water line to be connected to a source of water, a refrigeration evaporator line extending through and along a length of the water line, and a thermostatic control that has a sensing element extending along refrigerated ... | 12/07/1976 |
| 3979923 | Preassembled refrigerant subcooling unit A preassembled unit for subcooling the refrigerant in existing air conditioning and refrigeration systems to a temperature less than its saturated vaporization temperature. The unit is installable in existing refrigeration systems and has the capability t... | 09/14/1976 |
