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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7350412 | Vehicle's fuel tank equipped with two fuel outlet tubes A fuel tank, which is equipped with two fuel outlet tubes that are merged to one fuel injection pipe to engine, is provided. First fuel outlet tube is located at a corner of the bottom of the fuel tank. Second fuel outlet tube is located on a wall just 2.5 centimete... | 04/01/2008 |
| 7319401 | Radar level gauge system with variable alarm limits A radar level gauge system for determining the filling level of a filling material in a tank is disclosed. The system comprises a transmitter for transmitting measuring signals towards the surface of the filling material; a receiver for receiving echo signals from t... | 01/15/2008 |
| 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 |
| 7265677 | External device indicating that a tank is filled up System for indicating when a tank is full. The system includes a signal and control box. A container is connected to the tank. The container has a base, a float, an upper portion, and a lower portion. An orifice is arranged at the upper portion of the container. The... | 09/04/2007 |
| 7129832 | High/low level alarm controller A high/low level alarm controller having ability to interface with level sensing equipment and instrumentation in a manner that isolates the controller from downstream components is presented. The controller accepts power, logic and transduced level inputs; output f... | 10/31/2006 |
| 7117740 | Remote visual liquid quantity indicator A remote visual liquid quantity indicator comprises a flexible cable within a flexible outer sleeve and allows a user to remotely determine the level of a liquid in a container, such as an accumulator without the need for electrical power or a direct line of sight t... | 10/10/2006 |
| 7082827 | Leak detector An example of an apparatus for detecting the lowering of a top surface of a liquid includes a housing that has a housing hole, and an insertion member attached to the housing. A dowel is inserted into the housing hole, and a float is attached to the dowel. A detecto... | 08/01/2006 |
| 7067749 | Float switch and mounting system assembly A float switch and mounting bracket assembly made from plastic and impervio is to corrosion, with improvements over the prior art including a wide float switch body for enhanced water displacement that results in a more responsive operation, a housing that protects ... | 06/27/2006 |
| 7053782 | Fuel overflow alarm system A fuel overflow alarm system sounds a buzzer or other alarm when a fuel level in a fuel tank of a vehicle or other machine approaches an overflow state, thereby alerting a user that fueling should be halted. The device is activated when a fuel cap or fuel cap cover ... | 05/30/2006 |
| 7044077 | Mechanical warning device The mechanical signaling device is used for indicating when contaminates are present in water in a manhole so that the contaminated can be cleaned out of the manhole before the contaminates are released into the environment. The mechanical signaling device has a fla... | 05/16/2006 |
| 7015819 | Event notification system and wet well monitor An alarm detection device for monitoring high level signal in a wet well. The alarm detection device includes a fail safe circuit and an emulation circuit. The incoming high level signal is fed into the fail safe circuit and the emulation circuit. The emulated signa... | 03/21/2006 |
| 6822565 | Wireless gauge alert A wireless gauge alert system including a near empty sensor, a near full sensor, a transmitter, a receiver, and an alert device used to monitor the fuel level status of a liquid fuel or pressure (vessel) tank having a measuring device with an output member and gauge... | 11/23/2004 |
| 6681627 | Level sensing safety device functionable in fall-over position A safety device for water dispenser includes a magnetic tube, and a float. The tube sticks up on bottom of a water container. A first, and a second magnet switches are disposed in the tube, and connected in series. The float is movably fitted around the t... | 01/27/2004 |
| 6683535 | Water detection system and method A water detection system for detecting water and activating an alarm is provided. The water detection system includes an alarm relay and a water sensor. The water sensor includes a solid state switching and amplifying circuit for detecting low levels of c... | 01/27/2004 |
| 6536277 | Level-tracing water-monitoring apparatus A water-monitoring apparatus includes a frame being installed by water. A reel is mounted on the frame. A tension cable is wound on the reel and including a lower end and an upper end. A buoy is connected with the tension cable. A control device is connec... | 03/25/2003 |
| 6464465 | Level control device for a wastewater collection basin A level control device is adapted for use in a wastewater pump station. The level control device cooperates with a discharge pump to control the volume of wastewater contained in the pump station. The level control device includes a buoyant housing for be... | 10/15/2002 |
| 6369715 | Intrinsically safe sensor and data transmission system A sensor monitoring system comprises a passive sensor, a monitored transmitter, a repeater, and a central receiver. The system provides easy installation, convenient calibration, and very low maintenance. The sensor and the monitored transmitter are batte... | 04/09/2002 |
| 6326895 | Fluid level sensor for fluid tanks of boats A fluid level sensor for a fluid tank of a marine vessel is provided. The sensor includes a sensor mount and further includes a circuit housing that is pivotally connected to the mount to pivot about a predetermined pivot axis. A float assembly is configu... | 12/04/2001 |
| 6295869 | Capacitive measurement probe for measuring the level of a liquid and tank equipped with such a probe Capacitive measurement probe (6) for measuring the level of a liquid in a tank (1), of the type comprising a body (7) for mounting the probe and a first plate (8) which is supported by the body and is intended, together with a second plate (41), to form a... | 10/02/2001 |
| 6276200 | Liquid level controller A liquid level control system utilizes a sensor that is attached to a fixed support relative to a liquid container and transmits radio-frequency signals to a remotely located liquid supply system depending upon fluctuations in the liquid level. In the con... | 08/21/2001 |
| 6265980 | Time delayed fluid level monitoring device A time delayed fluid level monitoring device (10) for monitoring the level of oil in a compressor sump (not shown) comprises a housing (12) which defines an internal cavity (18). Two orifices (20 and 22) are provided at end (16) of housing (12) to allow f... | 07/24/2001 |
| 6236324 | Elastic plate liquid level sensor A liquid level sensor intended to be placed in a tank or sump. The Sensor includes a displacer attached to one side of an elastic plate and an optical shutter blade attached to the other side. The shutter blade contains an aperture. When the displacer is ... | 05/22/2001 |
| 6229448 | Intrinsically safe fluid tank overfill protection system A tank level monitoring and alarm system comprises a passive level switch, a transmitter, a repeater, and a receiver. It provides easy installation, convenient calibration, and very low maintenance. A mechanical level switch for the specific vessel is ins... | 05/08/2001 |
| 6223596 | Portable clamp-on liquid level indicator gauge Apparatus and method are provided for indicating the amount of liquid contained in a railroad tank car, or any other liquid storage tank having an interior surface defining a liquid level reference point. A readily portable liquid level indicator gauge is... | 05/01/2001 |
| 6199428 | Fluid level measuring device A fluid level measuring device for measuring a fluid filling level in a container contains a float disposed in the container and a magnet disposed in the container. The magnet is coupled to the float in terms of movement and, in the event of a change in t... | 03/13/2001 |
| 6124794 | Empty product detector The alarm mechanism of the invention signals the absence of a liquid from a source of aqueous liquid. The alarm mechanism comprises an alarm body having an inlet port and an outlet port; the inlet port in liquid communication with a source of liquid, the ... | 09/26/2000 |
| 6028521 | Liquid level sensor A liquid level sensor for reducing and monitoring liquid level in a vessel, such as a heated pot or kettle is provided. The sensor issues a signal when the liquid level drops to a level below its predetermined level. The signal may initiate an audio or vi... | 02/22/2000 |
| 5986554 | Empty product detector The alarm mechanism of the invention signals the absence of a liquid from a source of aqueous liquid. The alarm mechanism comprises an alarm body having an inlet port and an outlet port; the inlet port in liquid communication with a source of liquid, the ... | 11/16/1999 |
| 5953982 | Device for preventing dry boiling of a pan A device for preventing the complete evaporation of boiling food within a cooking pan is provided including a housing releasably connected to a pan. Further provided is an indicator mechanism situated on the housing and adapted to provide an indication up... | 09/21/1999 |
| 5916626 | HMDS supplying apparatus An HMDS supplying apparatus capable of sensing the flow of hexamethyldisilazane through a flowmeter and to control the amount thereof which is flowing, to thereby prevent a lowering of productivity due to inadequate or excessive flow amounts. The HMDS sup... | 06/29/1999 |
| 5898376 | Modular overfill alarm assembly for vented storage tanks A modular overfill alarm assembly is constructed and arranged to be installed in-line with a vent pipe in a vented storage tank for liquids such as waste oil or gasoline. The alarm assembly includes a vent tube having an open lower end that is threaded to... | 04/27/1999 |
| 5877689 | Leak detector A water appliance detection and cut off apparatus is provided including a water entry conduit for receiving water from a water source. A pan is provided having a bottom face and a lip coupled thereto and extending upwardly therefrom for defining an open t... | 03/02/1999 |
| 5859589 | Pressure alarm and method of operation for sewage treatment system A pressure alarm for sewage treatment systems such as waste-water or sewage treatment tanks which require water level control. In a preferred embodiment the pressure alarm includes a pressure sensing apparatus which includes a tee or elbow located in a ta... | 01/12/1999 |
| 5699049 | Monitoring system for non-pressurized conduit Abnormal flow of liquid in a non-pressurized conduit such as a drain line of a building is detected by a liquid level sensor unit connected at a conduit location not anticipated to fill with liquid during normal flow, so that liquid backing up at such loc... | 12/16/1997 |
| 5649450 | Alarm assembly for product level gauge A gauge assembly for measuring the level of a liquid product in a storage tank includes a float member that is constructed and arranged to float on the liquid product in the storage tank, a housing that is constructed and arranged to be mounted on an exte... | 07/22/1997 |
| 5515025 | Water level sensor, trailer using same and method of using trailer A sensor includes a hollow tube having first and second ends; a cap secured at said first end; the second end being substantially open to allow fluid to enter the tube; a floatation element slidably arranged within said tube; an element at the second end ... | 05/07/1996 |
| 5506564 | Marine craft fuel alert system A marine craft fuel alert system is operative during a given time period, to compare actual fuel capacity measurements with selected fuel tank capacity reference values, to permit timely intervention. Used with a relatively high reference value and operat... | 04/09/1996 |
| 5501255 | Fuel recovery system A fuel recovery system warns a user of an impending overflow of fuel and also provides an overflow chamber into which relatively small amount of overfilled fuel are captured, thus preventing fuel spillage into the surrounding environment. The system is ad... | 03/26/1996 |
| 5273187 | Dispenser A dispenser wherein a predetermined amount of a dispensing material within a syringe barrel is dispensed from a nozzle thereof by sliding axially a plunger to a prescribed distance toward the nozzle, the plunger being housed in an axially displaceable man... | 12/28/1993 |
| 5216409 | Method and apparatus for detecting a contaminated alcohol-gasoline fuel mixture A method and apparatus are described for detecting dissolved contaminants in an alcohol-gasoline mixture used for fueling an internal combustion engine and then indicating that the fuel mixture is of substandard quality when the degree of contamination re... | 06/01/1993 |
