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| Number | Title | Issue Date |
| 7994927 | Water meter with an emergency shut-down A water meter with an emergency shutdown is a dual purpose water meter, which records the accumulated water consumption of individual runs as any regular water meter, and detects water leakage or uncontrolled flow by comparing each single continuous run in non-equal... | 08/09/2011 |
| 7349813 | Fault tolerant power system architecture for fluid flow measurement systems To provide a fault-tolerant architecture to supply electrical operating power in fluid flow measurement applications, apparatus and associated systems, computer program products, and methods include an intelligent power module with redundant and electrically indepen... | 03/25/2008 |
| 7299683 | Metal particle sensor system A metal particle sensor system for detecting metal particles in an oil line. The metal particle sensor system may include a metal particle sensor positioned about the line, an orifice positioned within the line and downstream of the metal particle sensor, a first pr... | 11/27/2007 |
| 7260496 | Pressure detector and method of diagnosing blockage of impulse lines A pressure detector for detecting a high side pressure from a high pressure side impulse line and a low side pressure from a low pressure side impulse line includes a high side pressure variance calculating section for calculating a high side pressure variance from ... | 08/21/2007 |
| 6992569 | Safety shutdown system A safety shutdown system is provided for use with a fluid delivery system, such as used on a delivery vehicle. The safety shutdown system includes a plurality of sensors for sensing characteristics of a fluid delivery system. A controller includes a query timer func... | 01/31/2006 |
| 6943690 | Flow verification mechanism A flow verification sensor apparatus (30) is used with a constant volume pump (11) that pumps a liquid product (13) from a container (12). A plummet (32) is positioned in a flow tube (31). A sensor (33) is positioned ... | 09/13/2005 |
| 6856251 | Systems and methods for sensing pressure A system comprises a pressurized container configured to hold a pressurized gas and to supply controlled amounts of the pressurized gas to the system as required. The system also includes a sensor that includes a wireless transmitter. The sensor is configured to sen... | 02/15/2005 |
| 6819232 | Method of changing an air filter of vehicle air conditioning system A method of signaling for a change of an air filter of a vehicle air conditioning system is disclosed. The present invention uses a sensor installed in a conventional air conditioner and the appropriate time for changing the air filter is determined by checking comp... | 11/16/2004 |
| 6788209 | Automatic emergency shut-off system for delivery transports A software driven, solid state controlled, electro-mechanically operated system to monitor volatile liquid fuel or other hazardous liquids and provide emergency shut-off if the delivery system is ruptured. A computer receives input from transducers monitoring the fl... | 09/07/2004 |
| 6755148 | Dual magnetic register for a utility meter The present invention provides a device, system, and method for detecting and measuring the bi-directional flow of a fluid through a fluid meter, such as a household or business water meter. In one device embodiment the invention comprises a logical switch collar ( | 06/29/2004 |
| 6696961 | Water damage protection system and method of preventing water damage for domestic water supply systems A water damage protection system and method of preventing water damage for domestic water supply systems is provided. The system comprises a control valve, a sensing device, and a controller. The control valve is bias toward an open position to allow flui... | 02/24/2004 |
| 6623630 | Method and apparatus for monitoring a fluid system An apparatus for monitoring a fluid system particularly suited for use with high pressure liquid chromatography systems. The apparatus monitors seal leakage as well as the general wellness of the apparatus and can thus be used to provide preventive mainte... | 09/23/2003 |
| 6448896 | Air filter monitor for HVAC units An electronic system for monitoring the condition of the filter in an HVAC unit includes a controller which issues at least one command to a circuit for the motor of the fan producing airflow through the filter. The command to the driver circuit is associ... | 09/10/2002 |
| 6323774 | Portable excess water usage control and alarm system A monitor, shutoff control, and alarm for use with an inlet water supply obtained from a municipal water supply to prevent excessive usage of water due to leakage or human error, that includes a measuring means and shutoff valve connected to the inlet sup... | 11/27/2001 |
| 6317051 | Water flow monitoring system determining the presence of leaks and stopping flow in water pipes A water flow monitoring system for determining the presence of leaks in plumbing pipes having water flowing through the pipes under high pressure includes a flow monitor which is mounted to the pipe for sensing the flow of water through the pipe. A contro... | 11/13/2001 |
| 6284129 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exp... | 09/04/2001 |
| 6275160 | Multi-mode waterflow detector with electronic timer A flow detector includes solid state delay circuitry coupled to a flow indicating device. In response to flow being indicated, the delay circuitry is enabled. After a preset delay interval, if flow is still being indicated, an output signal can be generat... | 08/14/2001 |
| 6131471 | Liquid level sensor A sensor system. The system comprises a binary sensor issuing a signal representative of a first or second condition; sampling circuitry, operatively connected to the binary sensor, for monitoring the number of transitions between the first and second con... | 10/17/2000 |
| 6084521 | Waterflow detector with electronic timer A flow detector includes solid state delay circuitry coupled to a flow indicating device. In response to flow being indicated, the delay circuitry is enabled. After a preset delay interval, if flow is still being indicated, electrical energy can be provid... | 07/04/2000 |
| 6081196 | Apparatus and method for multipurpose residential water flow fire alarm A multipurpose residential plumbing and fire sprinkler system or, more simply, a multipurpose piping system ("MPS") is a system for providing water to both domestic uses (e.g., showers, sinks, toilets) and to sprinklers for fire protection. The invention ... | 06/27/2000 |
| 6052058 | Filter integrity monitoring system A method and system for monitoring integrity of a filter (25) of a smoke or fire detector system. The system has a detector chamber (14) into which light is passed from a light source incorporated into a light source control circuit (10). Scattered light ... | 04/18/2000 |
| 5986629 | Electrostatic discharge indicator A method and apparatus for detecting electrostatic discharge events is disclosed in which the electrostatic discharge indicator is "Electric Paper". The "Electric Paper" has a plurality of spheres having one hemisphere of one color and the other hemispher... | 11/16/1999 |
| 5982289 | Drip counter apparatus In apparatus for counting a succession of falling liquid drops having teardrop shape, with a downwardly convex down side, the combination that includes a beam provider for providing a beam of electromagnetic radiation to sidewardly pass into the drop at i... | 11/09/1999 |
| 5935426 | Water treatment device with volumetric and time monitoring features A totalization meter system for a water treatment device, the device having an inlet aperture and an outlet aperture, and a channel for channeling water between the inlet and outlet apertures. A flow reactive device is positioned in the channel and is exp... | 08/10/1999 |
| 5932812 | Method and devices use in flow measurement In flow measurement, a measurement signal essentially representing the instantaneous flow rate is determined with the aid of a flow transducer (2) in a flowmeter (1). In order to check whether the flowmeter measures correctly or not, the noise in the meas... | 08/03/1999 |
| 5920265 | Waterline leak detection and shutoff system A waterline leak detection and shutoff system comprising an in-line flap valve which includes a pivotal valve flap member having attached thereto a magnet and first magnetically responsive switch which switches states, when the magnet is moved from a firs... | 07/06/1999 |
| 5913236 | Protection system for hydraulic systems against leaks/floods, freezing and pressure A protection system for hydraulic systems, mainly for pipes, faucets, valves, boilers, furnaces, etc. which consists of a handling panel, a cut-off valve, a fluid leak detector, at least one pressure sensor, and a water shock absorber, and such a protecti... | 06/15/1999 |
| 5888381 | Water filter with pressure actuated flow monitor A faucet mounted water filtration system with a filter life monitor includes a filter housing with a flexible cap which deflects upon introduction of water into the housing. The deflection of the cap closes a switch on an electrical circuit which counts t... | 03/30/1999 |
| 5865991 | Monitoring system for a drinking water purification system A monitoring device for a drinking water purification system comprising a microprocessor that controls the overall operations of the monitoring system, a LCD indicating circuit that relates information to maintenance personnel, a detecting means that anal... | 02/02/1999 |
| 5808559 | Monitor for fluid dispensing system Apparatus and methods for monitoring a characteristic of fluid flow through a fluid dispenser that permit adverse flow conditions to be monitored, analyzed and displayed to an operator. The monitor samples either the static or firing pressure a predetermi... | 09/15/1998 |
| 5646846 | Global positioning planter system A global positioning planter system for planting of seeds by a seed planter. A population control controls the seed planter. A global positioning system computer with digitized maps connects to the population control. The population control connects to th... | 07/08/1997 |
| 5621392 | Flow detector A liquid flowed detection system is disclosed for monitoring continuous and discontinuous liquid flow in a fluid circuit. The system includes a holding device for maintaining a drip chamber so that its elongated axis generally lies in a vertical plane. A ... | 04/15/1997 |
| 5481260 | Monitor for fluid dispensing system Apparatus and methods for monitoring a characteristic of fluid flow through a fluid dispenser that permit adverse flow conditions to be monitored, analyzed and displayed to an operator. The monitor samples either the static or firing pressure a predetermi... | 01/02/1996 |
| 5450744 | Contamination monitoring system A contamination monitoring system for monitoring contaminants in a liquid, comprising a first electrical conductivity sensor, a second electrical conductivity sensor, a filter and a pump, the filter being disposed between the first sensor and the second s... | 09/19/1995 |
| 5369598 | Flow amount measuring and controlling apparatus A flow amount measuring and controlling apparatus which has a built-in gas meter can compute and control the flow amount used for each gas appliance by the estimation of the gas appliance generated in the flow variation from the change of the monetary flo... | 11/29/1994 |
| 5218346 | Low volume flow meter The low flow monitor provides a means for determining if a fluid flow meets a minimum threshold level of flow. The low flow monitor operates with a minimum of intrusion by the flow detection device into the flow. The electrical portion of the monitor is e... | 06/08/1993 |
| 5166340 | Organosilane compounds Organosilane compounds having the structural formula ##STR1## wherein R is a linear or branched C1-4 alkyl, 4-methyl-piperidyl, C6-12 aryl or C5-7 cycloalkyl; R1 is hydrogen, methyl or ethyl; R2 ... | 11/24/1992 |
| 4977517 | Leak and clog detection and removal system for use with particle counters In a particle counting system for sensing and counting particles, a sample fluid is drawn through an orifice from a sample chamber into a substantially enclosed fluid passage at a selected rate sufficient to maintain the pressure in the substantially clos... | 12/11/1990 |
| 4829448 | Air-in-line detector An air-in-line detector for detecting the presence of air in a translucent tube (8) containing a liquid comprises a channel (18) for receiving the tube, only three radiation emitter detector pairs (11, 12; 13, 14; 15, 16) two of which (11, 12; 15, 16) are... | 05/09/1989 |
| 4549570 | Waste disposal monitoring system A monitoring system (10) for a fluid waste disposal system is provided. Fluid waste is transported from a source (12) through a valve (16) to a reservoir (14) under access control provided by access switches (40). The monitoring system (10) includes densi... | 10/29/1985 |
