Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7410611 | In-line method and apparatus to prevent fouling of heat exchangers The present invention relates to a method and apparatus for the prevention of fouling of process streams by the application of electric charge on process components. The electric charge may be attractive or repulsive to the foulants, they may be constant or variable... | 08/12/2008 |
| 7143995 | Motorized cam actuator A motorized cam actuator for linear actuation of an apparatus. An actuating motor shaft is fitted with a bushing having first and second opposed flats and a threaded portion at an outer end thereof. With the motor mounted to a pedestal, the bushing is rotated on the... | 12/05/2006 |
| 7131490 | Fan coil controller A fan coil controller for a hot and cold water system of a building that turns off the fan while the hot water and cold water coils are flushed. A fan coil control circuit is configured to periodically and temporarily operate a hot water flow control circuit and a c... | 11/07/2006 |
| 7108002 | Steam cleaning system and method for semiconductor process equipment Disclosed are systems and methods for removing stubborn contaminants, aluminum fluoride and aluminum chloride in particular, from components of semiconductor-processing equipment. One embodiment forces steam through small holes in a gas distribution plate to remove ... | 09/19/2006 |
| 7036564 | Cleaning system A cleaning system for cleaning tubing using cleaning balls (20) circulated with the fluid through tubing (8). The system includes a separator (12) having a perforated funnel, which permits the fluid, but not the cleaning balls (20), to pa... | 05/02/2006 |
| 7024878 | Cleaning system for refrigerator condenser This cleaning system includes a compressor driven by a motor, a condenser; a cooling fan for directing an air stream at the condenser during normal operation, a motor drive system for driving the fan, and a timing device for reversing the rotational direction of the... | 04/11/2006 |
| 7003377 | Controlling cooling air intake for air cooled equipment A method and apparatus for supplying cooling air to electronic equipment from ones of at least two sources. A detector detects whether the quality, such as the temperature of the cooling air from a source, is satisfactory and if not shuts the damper to that source a... | 02/21/2006 |
| 6945316 | System for cleaning tubes of heat exchangers and cleaning bodies therefor In a system for cleaning tubes of heat exchangers flown through by a fluid medium, in particular crude oil, having a temperature in excess of 120° C., wherein, for cleaning a tube, deposits such as dirt particles or the like adhering to its inner wall are detached ... | 09/20/2005 |
| 6604577 | Geothermal heat pump cleaning control system and method An apparatus for removing deposits from a heat transfer wall of a heat exchanger. The apparatus includes a cleaning cycle control system that operates through the control system of the heat pump and eliminates the need for periodic acid cleaning of heat e... | 08/12/2003 |
| 6551414 | Automatic system and method for removing mineral deposits from a dishwasher Whenever a dishwasher is operated a given number of times or whenever a given number of days transpire, an apparatus performs a process that removes minerals deposits that have built-up inside the dishwasher. The process commences by rinsing the dishwashe... | 04/22/2003 |
| 6530427 | Control installation for solid cleaning members circulating in a heat exchanger A control installation for solid cleaning members circulating in a heat exchanger includes interception arrangements interposed on the heat exchanger outlet pipe, a return pipe which recycles toward the inlet pipe a return flow containing the solid cleani... | 03/11/2003 |
| 6386272 | Device and method for detecting fouling in a shell and tube heat exchanger A system for calculating the degree of fouling in a heat exchanger having at least one longitudinal tube inside of a shell, the shell having a first heat exchange medium flowing inside the tube and a second heat exchange medium flowing across the outside ... | 05/14/2002 |
| 5190095 | Condenser for refrigerator and method of operating the same A condenser for a refrigerator and a method of operating the condenser, in which heat exchanger tubes for cooling the condenser each have brush receivers and cooling water inlet/outlet ports at both ends thereof, one of the brush receivers accommodating a... | 03/02/1993 |
