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| Number | Title | Issue Date |
| 7703321 | Level meter The invention relates to a level meter which comprises a tank (1) which can at least be partially filled with a medium and has a bottom (12). The level meter further comprises a first measuring device (2) having a float (23) in the interi... | 04/27/2010 |
| 7634945 | Apparatus to water detection in a storage tank An apparatus for measuring a level of a fluid and detecting water in a storage container is provided. The apparatus comprises a signal-based fluid level measurement apparatus and a water detection device. The signal-based fluid level measurement apparatus has a firs... | 12/22/2009 |
| 7454969 | Fuel density measuring device, system, and method using magnetostrictive probe bouyancy A magnetostrictive fuel level probe includes a spring-loaded foot. The probe shaft of the fuel level probe moves up and down within the spring-loaded foot as a function of fuel density. The spring-loaded foot includes a reference magnet whose height relative to the ... | 11/25/2008 |
| 7403860 | Method using magnetostrictive probe buoyancy for detecting fuel density A magnetostrictive fuel level probe includes a spring-loaded foot. The probe shaft of the fuel level probe moves up and down within the spring-loaded foot as a function of fuel density. The spring-loaded foot includes a reference magnet whose height relative to the ... | 07/22/2008 |
| 7347255 | Device for detecting water in product-only pump flow stream A device for detecting the presence of water in a product-only hydrocarbon pump system particularly used for the removal of subterraneous hydrocarbons from a remediation site through a well. The device comprises a sealed float switch chamber, positioned either upstr... | 03/25/2008 |
| 7258483 | Device for measuring the level and/or the temperature in a container A device for measuring at least one of a level and a temperature of a liquid in a container includes a resistor arrangement adapted to be immersed in the liquid. An immersed length of the resistor arrangement in the liquid corresponds to the level of the liquid in t... | 08/21/2007 |
| 7219686 | Tap assembly for a liquid vessel having an overfill protection device and a float controlled magnetic level gauge This invention relates to a tap assembly for a liquid vessel, having an overfill protection device and a float controlled mechanical or magnetic level gauge. A single float actuates a stem of the overfill protection device as well as a rod of the level gauge. The ro... | 05/22/2007 |
| 7131330 | Submersible pump controller An apparatus for improving the service life of a submersible probe residing in a tank includes a liquid level detector adapted to detect when a liquid in the tank rises to a first level. The first level is above the probe. A controller is coupled to the liquid level... | 11/07/2006 |
| 6955083 | Vertical liquid level measuring device A system for actuating an indicator in response to a depth change in a liquid that is confined to a container comprises a housing, a float constrained to vertical movement in response to changes in liquid depth in the container, an actuator connected to the housing ... | 10/18/2005 |
| 6802219 | Tide staff system The present invention relates to a segmented cylindrical tide staff system [11] for erection at remote areas for dynamic calibration of electronic tide meters and computer models of tides, said tide staff system consisting of plurality of cylindrical tubes [ | 10/12/2004 |
| 6588272 | Redundant level measuring system A redundant level measuring system comprises a chamber for fluidic coupling to a process vessel whereby material level in the vessel equalizes with material level in the chamber. A float including a magnet in the chamber rises and falls with material leve... | 07/08/2003 |
| 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 |
| 6370952 | Vehicle oil level monitoring system A vehicle oil level monitoring system for verifying the amount of oil in an engine without requiring the user to access the engine compartment. The vehicle oil level monitoring system includes a vehicle with an engine and a fuel port, a dipstick, a sensor... | 04/16/2002 |
| 6272911 | Vehicle sensing system and method A method and apparatus for determining unique fuel amount limit values for a fuel tank of a particular vehicle. The fuel tank has a first fuel amount limit that is associated with a level of fuel in the fuel tank. A fuel varying activity is performed rela... | 08/14/2001 |
| 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 |
| 6176133 | Fuel sending unit having a fuel filter combined with a fuel float A fuel sending unit assembly includes a pump for pumping fuel from a storage system to a combustion system, a float for measuring the level of fuel remaining in the storage system, and a filter for preventing debris contained in the fuel from entering the... | 01/23/2001 |
| 6138524 | Mounting arrangement for a device for detecting the fuel level in a fuel tank A fuel level detecting device has a first locking mechanism including a locking member, clamping portions for clamping a mounting surface, and pawl arms which are on a body of the device. A slit and engagement portions are provided on the mounting face of... | 10/31/2000 |
| 6065336 | Oil level detector mounting arrangement An oil level detector mounting arrangement, which includes a mount having a downward tube dipped in the oil in the oil tank of a vehicle, a float floating in the oil in the oil tank and moved along the downward tube, and a circuit board sealed in the down... | 05/23/2000 |
| 6041966 | Enclosure for a bottom draining container A valve assembly and a bottom-draining container having the valve assembly. The valve assembly comprising a first body member, a guide member supported by the first body member so that the guide member will extend upward into the container, and a float mo... | 03/28/2000 |
| 6006605 | Level maintaining apparatus for a liquid An apparatus for automatically maintaining a level of water in a pool reservoir comprising a housing which includes a transmitter/receiver device, a logic circuit in communication with the transmitter/receiver device, a valve assembly controlled by the lo... | 12/28/1999 |
| 5775877 | Submersible motor-driven pump with float switch An electric submersible motor-driven pump includes a pump housing (2) in which is located a pump motor (3) and an associated impeller (4). A separate detachable float and switch housing (6) is detachably connected to the pump housing (2) and defines a sub... | 07/07/1998 |
| 5678449 | Intake-and-gauging device for the fuel in a motor vehicle The present invention relates to an intake-and-gauging device for the fuel in a motor vehicle, the device comprising a fixing base designed to be fixed on a wall of a fuel tank and carrying an intake assembly provided with a reserve receptacle and a gaugi... | 10/21/1997 |
| 5550532 | Method and device for containing fuel spills and leaks A device and method for containing spills and leaks from fuel handling equipment is provided in which differential sensing means detect the presence of hydrocarbons and nonhydrocarbons such as water. Signals and the responses generated according to them m... | 08/27/1996 |
| 5311776 | Pre-installation liquid level gauge assembly with thread protector A pre-installation liquid level gauge assembly is provided which comprises a fitting with a threaded outer surface and a thread protector friction fit over the threaded outer surface. The thread protector comprises a sleeve portion and a shoulder portion ... | 05/17/1994 |
| 5253521 | Method of transmitting measured temperature and position parameters from a transducer A magnetostrictive liquid level transducer equipped with a number of temperature sensitive resistors is supplied with low level power from a remote station and charges a capacitor to store power for interrogation of the level transducer. The transducer is... | 10/19/1993 |
| 5138891 | Gauge well system A system for a gauge well in a liquid storage tank with a floating roof including a floatable container located inside the gauge well and having a flexible laterally or radially serrated flange extending outward from the float and in contact with the insi... | 08/18/1992 |
| 5025827 | Structure of fluid level controller of piping type A fluid level controller flexibly set up according to the number of level steps to be controlled and the pitch between such level steps, which comprises a plurality of joint pipes connected in series to form a pipe assembly; a ring-shaped magnetic floatin... | 06/25/1991 |
| 5018550 | Dishwasher overfill protection device A dishwasher is provided with an improved apparatus for protecting the tub from being overfilled in the form of a float having a float stem that is automatically captured upon insertion through a passage in the tub bottom wall such that the float will be ... | 05/28/1991 |
| 4938590 | Liquid level indicator using laser beam An fiber optic liquid level indicator with a floating reflector includes a reference scale provided with a reflector disposed in an upper space above the liquid level within a pressure vessel so that a reference distance usable to correct error due to pre... | 07/03/1990 |
| 4813282 | Vehicle fuel level sensor A vehicle fuel level sensor comprising a hollow cylindrical body housing a sliding float, the position of which is determined by the fuel level in the fuel tank. The sensor also comprises a filter surrounding as portion of the side wall of the cylindrical... | 03/21/1989 |
| 4807473 | Thermoplastic sight monitor A liquid sight monitor includes a translucent thermoplastic viewing tubular element having ends that are flared, after the tube is inserted through the central holes of flanges located at either end, to secure the viewing element in place. A float may be ... | 02/28/1989 |
| 4738134 | Ink transfer volume measuring assembly An ink transfer volume measuring assembly utilizes a front, resilient surfaced roller and a rear, hard surfaced roller carried in a hand held, portable housing. The front roller is pried against the surface of a screened ink roller and receives ink theref... | 04/19/1988 |
| 4468975 | Gauge well float for floating roof storage tanks A gauge well float includes a sealed cylinder having rounded ends. A tube is disposed along the vertical axis of the cylinder and held in place by the rounded ends. A weighted cable suspended within the gauge well passes through the tube and keeps the flo... | 09/04/1984 |
| 4454761 | Liquid level detector adapted in particular to determine the level of fuel in a vehicle fuel tank In a liquid level detector of the type comprising a fixing rod bearing a winding over virtually the whole of its height, an annular float mounted around the rod and bearing at least one conducting blade constantly in contact with the winding, a warning de... | 06/19/1984 |
| 4213258 | Steam iron water gauge In a steam iron having a connected handle with a steam control thereon, a fill opening to an interior water tank, a ported soleplate having a steam generating boiler with a coverplate thereover forming steam distribution passages and with a water sight ga... | 07/22/1980 |
| 4180085 | Dishwasher fill float An improved float assembly for a dishwasher liquid fill system includes cam means on the float stem. The cam includes a first portion operative, upon the liquid rising to its normal fill level, to maintain a switch in its circuit closing position allowing... | 12/25/1979 |
| 4051727 | Liquid mixture indicator for rug shampoo apparatus An indicator mounted on a receptacle for determining the proportion of the liquid mixture components in the receptacle of a liquid dispensing apparatus, such as a rug or carpet shampoo device. Even if the receptacle is partly filled with a liquid mixture,... | 10/04/1977 |
| 3974695 | Double level gauge In an environment having two or more immiscible liquids wherein a first liquid floats on top of the second liquid, a gauging system which senses the depth of the first liquid which is floating on top of the second liquid. A float holding a capacitance pro... | 08/17/1976 |
| 3968896 | Fuel tank A vehicle fuel tank has a flexible bladder disposed within a metal shell. A vent line extending from within the bladder is controlled by an altitude sensitive valve, and a pressure balance line interconnects the vent line and the space between the shell a... | 07/13/1976 |
