Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7779858 | Valve assembly with overfill protection device and capacitive liquid level gauge A valve assembly, such as a tap for a liquefied gas cylinder, includes an overfill protection device and a liquid level gauge having an electrode assembly comprising a pair of lamellar electrodes mounted closely adjacent a housing member of the overfill protection d... | 08/24/2010 |
| 7509974 | Metallic ball for a ballcock A metallic ball has a sliding sleeve, a shell, at least one magnet and a mounting bracket. The sliding sleeve has an open upper end, an open lower end and an outer surface. The shell is spherical, is mounted securely around the sliding sleeve between the open upper ... | 03/31/2009 |
| 7369055 | Water softener monitoring system A system for monitoring the level or amount of a material within a container is provided. The system includes a detection mechanism that can be a direct detection mechanism or any of a number of indirect detection mechanisms. When the detection mechanism senses an u... | 05/06/2008 |
| 7353821 | Steam oven system having steam generator with controlled fill process A steam oven includes a heating chamber or boiler in which steam is generated. Water fill and refill operations of the heating chamber are controlled in attempt to account for water expansion and/or to enable substantially regular production of steam. ... | 04/08/2008 |
| 7352073 | Ocean wave energy converter having an improved generator and ballast control The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor... | 04/01/2008 |
| 7304583 | Device for detecting a defined filling level of a medium in a container An apparatus for detecting a predefined fill level of a medium in a container having a lid by means of a conductive measuring system, which has at least two measuring electrodes extending into the container. A measurement current flowing between the two measuring el... | 12/04/2007 |
| 7300196 | Automatic dilution system with overflow protection A chemical solution dispensing apparatus uses a dissolving tank to hold a solid chemical cake. The dissolving tank delivers the chemical solution into a holding tank by gravitational flow and then to a receiving system. A liquid level sensor in the holding tank sens... | 11/27/2007 |
| 7249573 | Pressurized steam boilers and their control A method of controlling the operation of a pressurised steam boiler (50) heated by a burner (20), which includes the steps of a) monitoring the level of water in the boiler (50), b) monitoring the pressure of steam in the boiler (50), c) ... | 07/31/2007 |
| 7243540 | Low-water cut-off system A low-water cut-off system [A] determines if fluid [W] within a boiler or other enclosure drops below a predetermined level within the enclosure. A signal generator introduces a signal into the enclosure so that the signal is present for sensing at the predetermined... | 07/17/2007 |
| 7240690 | Valve assembly with overfill protection device and capacitive liquid level gauge A valve assembly, such as a tap for a liquefied gas cylinder, includes an overfill protection device and a liquid level gauge having an electrode assembly comprising a pair of lamellar electrodes mounted closely adjacent a housing member of the overfill protection d... | 07/10/2007 |
| 7237409 | Steam cleaner with safety device A safety valve mounted in a steam cleaner is provided. The safety valve comprises a cap assembly, an actuation assembly, and a lock assembly. A rotation of the cap is adapted to detach the cap assembly when the steam cleaner is not operating or steam pressure inside... | 07/03/2007 |
| 7222527 | Automatic level sensing device used in massage tub An automatic water level sensing device is used in a massage tub. The massage tube comprises: a plurality of water circulation devices and a switch; each water circulation device having at least one suction opening, at least one water outlet and a motor; the automat... | 05/29/2007 |
| 7219974 | Measurement of fluid continuity in a fluid carrying member In an inkjet printer using ink reservoirs located physically remote from the print heads, tubes are used to deliver ink from the ink reservoirs to the print heads. Air initially present within the tubes can interfere with the proper operation of the print heads and ... | 05/22/2007 |
| 7216491 | Ice maker with adaptive fill An icemaker assembly includes an ice tray having an ice forming compartment, a water line configured to advance water from a water source to the ice tray, a valve operable to selectively block advancement of water through the water line while an actuation signal is ... | 05/15/2007 |
| 7207318 | Method for operation of a device for energy conversion using a main fuel and at least one auxiliary fuel A method for operating a converter for the energy conversion of fuel from at least one main fuel supply, and from at least one auxiliary fuel supply for operating the converter directly and/or by operating an auxiliary unit, comprises: detecting the amount of fuel i... | 04/24/2007 |
| 7193833 | Electric switch An electric switch (1) comprising a capacity sensor circuit (2) provided with a signal input (3) arranged to be connected to an actuating line, and which is provided with a relay device (4) arranged to feed a current to a load line (7 | 03/20/2007 |
| 7171993 | Beverage dispenser with automatic cup-filling control A beverage dispenser for filling a container preferably has a nozzle through which the beverage is discharged and a pivoting lever located underneath the nozzle that detects the placement of a container so as to regulate the actuation of the dispenser. A conductive ... | 02/06/2007 |
| 7161492 | Mechanical self-cleaning probe via a jiggler A device, having a container for holding a fluid moving therein and a conductance probe installed therein for providing a conductance signal indicating whether it is in contact with the fluid, features a jiggler arrangement having a jiggler arranged on the conductan... | 01/09/2007 |
| 7156116 | Apparatus and method for operating a valve using a cushion filter A method, system, and computer program are provided for operating a valve using a cushion filter. The method, system, and computer program receive a process variable signal associated with operation of a valve. The method, system, and computer program filter the pro... | 01/02/2007 |
| 7129713 | Capacitive moisture sensor A moisture sensing apparatus includes an oscillator for supplying an AC signal to a driven ring of a sensor having a pad inside the ring, and a ground plate around the ring. An amplifier forms part of a temperature-compensated, precision rectifier, and is connected ... | 10/31/2006 |
| 7124913 | High purity chemical container with diptube and level sensor terminating in lowest most point of concave floor A transportable container for high purity, high cost, liquid chemicals capable of maximizing dispensing of the liquid chemical content of the container at deviations from an upright position, comprising; a top wall, a side wall and a bottom wall, the bottom wall hav... | 10/24/2006 |
| 7114404 | System and method for detecting flow in a mass flow controller Systems and methods are provided for detecting flow in a mass flow controller (MFC). The position of a gate in the MFC is sensed or otherwise determined to monitor flow through the MFC and to immediately or nearly immediately detect a flow failure. In one embodiment... | 10/03/2006 |
| 7107838 | Apparatus and methods for monitoring water consumption and filter usage Apparatus and methods for employing electrical properties of water to indicate the level of filtered water in a filtered water container. The container is fitted with a hopper that holds unfiltered water. The hopper is fitted at its base with a removable and replace... | 09/19/2006 |
| 7093611 | Water feeder controller for boiler A water feeder controller for a boiler monitors a low water cutoff sensor in a boiler and uses a feed timer to feed water to the boiler for a predetermined feed period of time. The feed timer brings the water level in the boiler well above the low water cutoff senso... | 08/22/2006 |
| 7076960 | Preserving system To provide a preserving system capable of re-using vaporized nitrogen, and moreover, capable of always cooling the specimens at a predetermined temperature or lower. The preserving system comprising a cylinder and the preserving vessel which is supplied with liquid ... | 07/18/2006 |
| 7067935 | Method for regulating the level of a dam installation and dam installation implementing the method Method of regulating a water level of a dam installation having a plurality of turbine generator units arranged to generate electrical power, wherein at least some of the plurality of turbine generator units are arranged at least one of one above another and one bes... | 06/27/2006 |
| 7032542 | Apparatus and methods for controlling a water heater A gas-powered water heater includes means for stepping down a line voltage from a receptacle remote from the tank, means for using the stepped down voltage to provide a low voltage, and means for using the low voltage to sense conditions pertaining to the heater and... | 04/25/2006 |
| 7034937 | Flow meter The invention is a liquid volume-flow meter suitable for measuring extremely turbulent flow. The meter comprises a measuring chamber formed as a pipe having a wall of transparent material fitted inline with an existing pipe of similar diameter, whereby the detector ... | 04/25/2006 |
| 7017492 | Coordinating the functioning of a color control system and a defect detection system for a printing press A method of coordinating the utilization of a color control system and a defect detection system on a printing press includes acquiring image data and processing the data by a comparison to template image data and the generation of color error data and print defect ... | 03/28/2006 |
| 7011446 | Thermocouple junction box with isolated studs A thermocouple junction box for reducing EMF generated by a stud-and-cup configuration comprises a cup adapted to be electrically connected to a thermocouple sensing junction and a stud disposed, at least in part, within the cup, the stud being electrically isolated... | 03/14/2006 |
| 7000467 | Method, system and program product for monitoring rate of volume change of coolant within a cooling system Method, system and program product are provided for monitoring coolant within a cooling system designed to provide system coolant to one or more electronics subsystems. The monitoring technique includes employing at least one pressure transducer to obtain multiple p... | 02/21/2006 |
| 6998990 | Auto shutoff overflow controller The automatic shutoff overflow controller comprises a circuit which engages between a source of power and a water processing device, the controller, sensing an undesirably high water level in a liquid containment into which water drains from the device, shutting off... | 02/14/2006 |
| 6964278 | Non-invasive gauge glass liquid level sensor apparatus An apparatus is disclosed for electronically and non-invasively sensing liquid level in a boiler or other liquid-containing vessel. The apparatus, comprising a sensor and sensor integrated circuit can be uniquely designed for external attachment to any commercially ... | 11/15/2005 |
| 6956486 | Bathtub water level monitoring system A bathtub water level monitoring system for alerting a user upon acquisition of a pre-selected water level in a bathtub. The bathtub water level monitoring system includes a main unit adapted for attachment to an interior face of a bathtub, the main unit having a pl... | 10/18/2005 |
| 6938635 | Level switch with verification capability The present invention comprises a novel level switch which may be employed to detect liquid levels within a process vessel. The level switch of the present invention is self validating so that manual testing is not required in order to ensure proper operation and sw... | 09/06/2005 |
| 6935367 | Flotation cell fluid level control apparatus A fluid level control apparatus for selectively controlling the movement of liquid flowing out of a flotation cell is described. The fluid level control apparatus is significantly reduced in size in comparison with the flotation cell or cells to which it is connecte... | 08/30/2005 |
| 6926028 | Water feeder controller for boiler A water feeder controller for a boiler monitors a low water cutoff sensor in a boiler and uses a feed timer to feed water to the boiler for a predetermined feed period of time. The feed timer brings the water level in the boiler well above the low water cutoff senso... | 08/09/2005 |
| 6910498 | Liquid level controller A liquid level control system for detecting and responding to changes in the level of liquid in a container. The system includes a transmitter in radio communication with a receiver, which is in turn connected to a valve assembly. The transmitter unit is programmabl... | 06/28/2005 |
| 6907779 | Continuous flow measurement recorder and recording method A continuous flow measurement recorder is provided for making water flow measurements in an open channel. An ultrasonic sensor obtains pressure head measurements upstream from a flume or weir located in the open channel. A central processing unit receives the head m... | 06/21/2005 |
| 6877170 | Toilet control system A toilet water measuring and flow control system, including leak and overflow detection and prevention elements. The system has inlet and outlet flow sensors operably connected to inlet and outlet control valves and to water level sensors to measure and control wate... | 04/12/2005 |
