"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7293479 | Speed and temperature sensing in separate cavities in a single sensing head A sensor apparatus includes a sensor assembly for maintaining multiple and varying sensor components, wherein the sensor assembly comprises a molded sensor head configured to include a first cavity and a second cavity. A first sensor of a first sensor type can be lo... | 11/13/2007 |
| 7021552 | Method and installation for controlling the temperature in a controlled-climate chamber The invention relates to a method for controlling the temperature in a controlled-climate chamber, wherein: an organism, such as a plant or an animal, is placed in the controlled-climate chamber; the temperature in the controlled-climate chamber is kept essentially ... | 04/04/2006 |
| 6990820 | Method for controlling operation of refrigerator Method for controlling operation of a refrigerator including the steps of turning on a compressor when a temperature of a food storage chamber reaches to an upper limit of upper/lower temperature deviations ΔT from an optimal setting temperature T, turning off the ... | 01/31/2006 |
| 6796133 | Method for controlling operation of refrigerator Method for controlling operation of a refrigerator including the steps of turning on a compressor when a temperature of a food storage chamber reaches to an upper limit of upper/lower temperature deviations ΔT from an optimal setting temperature T, turning off the ... | 09/28/2004 |
| 5974819 | Refrigeration thermostat with controlled pressure equalization A refrigeration apparatus containing a thermostat, adapted for use in a food storage compartment potentially containing a flammable gas, includes a thermostat and an enclosure forming a chamber configured to house the thermostat. The enclosure has two umb... | 11/02/1999 |
| 5551169 | Air velocity control for efficient product temperature cycling The temperature of air to heat or cool a product (16, 18) is maintained constant at levels which respectively are substantially higher or lower than the goal temperatures at which the respective products are to be stressed. Controllers (68, 70)having temp... | 09/03/1996 |
| 5136856 | Cooling system A cooling system comprising an airtight box which accommodates a cooling module and an electronic device which is cooled by the cooling module and has a door which is opened when attending to maintenance of parts within the airtight box, a dew condensatio... | 08/11/1992 |
| 5123477 | Thermal reactor for biotechnological processes A thermal reactor, and a method of operating the thermal reactor, in which the thermal reactor includes: a chamber which is thermally isolated by refrigerated air circulating in the walls of the chamber, and which holds a tray of sample vials; means for s... | 06/23/1992 |
| 5013159 | Thermal analysis apparatus Apparatus for controlling the temperature of a sample in a thermal analysis system according to a temperature-control program in order to facilitate the production of rising and falling temperatures. The apparatus includes a first heater, a thermally insu... | 05/07/1991 |
| 4502467 | Compact attic mounted solar heating pack assembly A compact attic mounted solar heating pack assembly includes an enclosed sheet metal plenum fixedly hung by straps from the attic rafters at the apex of north and south facing roofing sections. An electric powered blower fixed to the plenum has an air inl... | 03/05/1985 |
| 4495780 | Cooling method and apparatus for hermetic type control box Method and apparatus for controlling the cooling of a hermetic type control box accommodating therein electronic apparatus by means of a cooling system. A cooling member of the cooling system is disposed at an upper portion of a hermetically closed chambe... | 01/29/1985 |
| 4265219 | Solar heating (cooling) system For solar heating (with cooperating cooling) both simplification and automatic control are needed. In the present invention solar heating and air conditioning apparatus is improved in various ways. For example, the furnace for auxiliary heat is eliminated... | 05/05/1981 |
| 4258878 | Flue gas heat recovery system A flue gas heat recovery system for dwelling hot water heating system boilers is disclosed. The system comprises a heat exchanger disposed in a flue for exhausting combustion products from the boiler and a circulating pump for circulating cooled water fro... | 03/31/1981 |
| 4150786 | Temperature sensor means with integral temperature limit functions A temperature control system, shown as a differential temperature control system, uses a special temperature sensor means. The temperature sensor means includes a resistance temperature responsive element that is paralleled by one or more temperature resp... | 04/24/1979 |
| 4129118 | Method and apparatus for providing differential temperature thermostat control for solar hot water systems Detecting the temperature of water moving from a solar collector to a hot water storage and detecting the temperature of the water in the hot water storage by thermistor devices, comparing the resistance differences of the thermistor devices and providing... | 12/12/1978 |
| 4051999 | Environmentally heated and cooled building A solar heated building including a thermal collector means which is carried in the attic of the building for absorbing energy and heating the air within the attic. Duct means are connected between the attic and a thermal storage chamber carried below the... | 10/04/1977 |
| 4040566 | Pollution-free heating system What follows is a description of a system for heating a building by solar energy, and providing heated water for domestic use. A roof-mounted solar heating panel, which includes a clear specially shaped covering panel to intensify the solar energy strikin... | 08/09/1977 |
| 4037786 | Energy recovery and storage system Heat pipes are employed to capture energy normally lost in the form of heat in the gases in flue-stacks and to transfer the captured heat to water in a water jacket. The heated water is pumped from the water jacket to a storage tank where it is kept until... | 07/26/1977 |
| 4029258 | Solar energy collector A metal collector plate with black paint on its face is mounted in a heat insulated space with a dual pane transparent member transmitting solar rays to the face of the plate. The front face of the plate is spaced from the transparent member providing a p... | 06/14/1977 |
| 3930611 | Air conditioning control system and method A multiple zone air conditioning control system is disclosed in which air temperatures in respective individual zones are governed according to signals derived from sensed air temperatures in the respective zones and sensed temperature of air discharged t... | 01/06/1976 |