Class 200/84C - Magnet

Subclass of Class 200 - Electricity: circuit makers and breakers
No. of patents: 193
Last issue date: 08/14/2007

Number	Title	Issue Date
7255037	Switch A switch is disclosed comprising a housing formed with a chamber along which a ball can roll. An element having a pair of arms is pivotally mounted within the housing, with one arm either side of the ball, such that an inclination of the switch causes the ball to mo...	08/14/2007
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
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
7121140	Liquid quantity sensing device A liquid quantity sensing device which can easily and accurately measure liquid quantity stored in a container is disclosed. It utilizes an infrared ray or a supersonic sensing element associated with a float placed in the measuring tube and an electrical circuit bo...	10/17/2006
7094334	Water filter having a filter use time indicator The described embodiments of the present invention include a water filter having a float portion with a magnet that moves up and down due to water flow to activate a switch for tracking the use time of the filter. ...	08/22/2006
7089875	Gliding board for sports activities on water, snow, sand lawn and the like The invention relates to a gliding board for sports activities on water, snow, sand, lawn and the like, comprising a body resembling a board, which is equipped with a drive motor, wherein a self-supporting tank for the drive motor covering a large surface of the str...	08/15/2006
7067750	Float switch and mounting system assembly A float switch assembly with a housing/clamping structure that is made from plastic and impervious to corrosion, with improvements over the prior art including a thumbscrew positioned between its two upper bracing protrusions and external braces/ribs that make it le...	06/27/2006
7047999	Humidification chamber with float-valve having improved float A method is disclosed for the manufacture of a float (30) comprising the following steps: providing a mould (10) having a first enclosure (12) opening into a second enclosure (14) of greater dimensions than the first enclosure (12)...	05/23/2006
7009125	Electrical fluid activated switch A linear slip to slip coupling has an input portion and an output portion with a common horizontal centerline. A fluid container has a threaded aperture. An adaptor has a threaded input end releasably coupled to the threaded aperture of the container. An unthreaded ...	03/07/2006
6998552	Float-type liquid level switch assembly with light emitting elements A float-type liquid level switch includes a main body, a float, a magnetic reed switch, and a light emitting element; the float has a magnet joined thereto, and is displaceable along a length of the main body; the magnetic reed switch and the light emitting element ...	02/14/2006
6992260	Plastic pan float switch and mounting system assembly A float switch, housing, and clamping member assembly that is made from plastic and impervious 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 housin...	01/31/2006
6971533	Sealing cap for a motor vehicle radiator A pressure cap for a fixed neck of an automobile radiator is provided with an outer cap component and with an inner cap component which has a flow connection between the inside and the outside of the tank and a valve arrangement for releasing and blocking the flow c...	12/06/2005
6967580	Emergency and disabled persons communication business model algorithm and method and apparatus This invention is an algorithm and method and apparatus for communication in emergency situations and for persons who are disabled. The invention features unique telephone actuation means including overt and covert means both by wired devices and wireless transmissi...	11/22/2005
6967572	Radiator cap having readout capabilities A radiator cap for use with a fluid cooling circuit associated with an engine, such as an automobile engine, includes elements that monitor various conditions in the radiator and provides a readout of such conditions. A circuit that has an audible signal is also inc...	11/22/2005
6913504	Method for introducing mercury into a fluorescent lamp during manufacture and a mercury carrier body facilitating such method Method for introducing a limited amount of mercury into a fluorescent lamp during manufacture thereof includes the steps of forming the lamp with an exhaust tubulation therein open at an end thereof, exhausting the interior of the lamp through the exhaust tubulation...	07/05/2005
6892573	Side-mountable fluid level sensor A side-mounted float sensor has eight components: a reed switch, two leads, a molded connector, a sensor body, a sealing grommet, a float, and an activation magnet. The two leads are assembled to the molded connector and the reed switch is welded across the leads. T...	05/17/2005
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
6679286	Ball tap with a water level switch A compact ball tap with 1 a water level switch which comprises a guide standpipe 5 vertically arranged in a tank T, a float 6 slidably installed on the guide standpipe 5, a valve 3, a lever 4 controlling an open-close action of the valve 3 connected with ...	01/20/2004
6552283	Activation flow switch for tankless water heaters A flow switch for use in tankless water heaters. The present invention is an activation flow switch for tankless water heaters. More specifically, the flow switch is comprised of polypropylene balls through which is inserted a magnet. The balls have a spe...	04/22/2003
6481278	Hall-effect fine resolution liquid level indicator A liquid level indicator apparatus provides direct readout of liquid level at high resolution using an array of vertically disposed Hall-effect magnetic switches. To overcome the limit to closer spacing of the switches imposed by their vertical dimension,...	11/19/2002
6446506	Fluid level sensing switch The present invention provides a fluid level sensing switch for use with a device having a fluid reservoir. The switch is float activated and closes a circuit so as to change an operating parameter in the event that the volume of fluid in the reservoir fa...	09/10/2002
6380499	Float sensor employing reed switch A reed switch in a solid plastic body is positioned by a clip adjacent to a fluid container. A change in fluid level opposite the reed switch moves a magnet connected to a float, turning the reed switch on or off. Glass filled polyester is injected into a...	04/30/2002
6259860	Humidifier A humidifier includes a float positioned at a water outlet of a water tank, and a body containing a water level sensor functioning with the float rising and falling with the level of the water in a water chamber in the body to drive the water level sensor...	07/10/2001
6253608	Side mount liquid level sensor with enhanced float travel A side mount liquid level sensor (10) includes limit arms (100, 102) on the float (80) and limit wings (54, 56) on the switch housing, with the limit wings (54, 56) being spaced vertically from the stem (14) of the housing (11) whereby to allow float (80)...	07/03/2001
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
6195012	Drip annunciator A drip annunciator comprises a main body and a needle bottle capable of inserting into a drip bottle for outputting liquid. A buoyancy body is received in the needle bottle, which may move with the liquid level. The bottom of the buoyancy body is installe...	02/27/2001
6069331	Flow control vertical switch The invention is directed to a flow control vertical switch for starting and stopping electric pump motors and being controlled by the level of a liquid using the flow of the liquid being moved to hold the switch in a switched position until the sump is d...	05/30/2000
5886312	Switch level control for tank ullage determining system A liquid level sensor for a tank includes coaxial inner and outer tubes having lower ends extending into the tank and upper ends projecting from the tank, with the upper end of the inner tube projecting from the outer tube and disposed a known distance fr...	03/23/1999
5880423	Water level sensor A water level sensor includes a magnetic tube and a float disposed on a vertical oval rod portion of the magnetic tube. A magnetic switch is contained in the magnetic tube and connected with a power cord. The float has a center hole for the vertical oval ...	03/09/1999
5862702	Sealing assembly for the sensing probe of a level detector Both ends of a sensing probe are sealed by an assembly including a fixing disk, a sensing probe, a sensing circuit, a floating collar and an external tube is provided. The fixing disk is provided with a threaded opening in which one end of the sensing pro...	01/26/1999
5829303	Method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float A method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float. Firstly, providing an elongate float having an axial bore defining a longitudinal axis. The float has a plur...	11/03/1998
5827962	Hydraulic brake fluid reservoir level indicator system A fluid level indicator for a brake fluid reservoir is disclosed which comprises a socket and circuit board which, once assembled, are installed within a chamber integrally molded with the fluid reservoir. The circuit board is assembled to the socket, whi...	10/27/1998
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
5711354	Level control systems for high purity chemical delivery systems A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for hig...	01/27/1998
5607002	Chemical refill system for high purity chemicals A highly reliable digital level sensor assembly is provided to replace optical and capacitance type sensors in high purity chemical delivery systems. The digital level sensor assembly is particularly useful in bulk chemical refill delivery systems for hig...	03/04/1997
5581062	Side-mountable liquid level sensor assembly A side-mountable liquid level sensor utilizes a rubber sealing grommet to temporarily hold the buoyant member within the cylinder of the liquid container opening to facilitate assembly. The buoyant member has an open slot with cooperating limit structure ...	12/03/1996
5562423	Automatic float control switch for a bilge and sump pump An automatic control for a liquid pump which assures that the pump starts when the liquid reaches a predetermined level and that the pump is stopped when the level has fallen to a second predetermined level. The control includes a permanent magnet mounted...	10/08/1996
5485866	Fluid shut off valve and fill level indication A valve to monitor the level of fluid in an above ground storage tank while the tank is being filled, cutoff the flow of fluid when the tank is in a full condition, and as long as the filling pressure is on the valve the valve will remain cutoff even if t...	01/23/1996
5435181	Electronic float gauge Disclosed herein is an electronic float gauge for indicating the level of liquid in a tank. A float follows the liquid level and causes a rotor that has magnets on it to rotate. Surrounding the magnets, in a concentric array, are a series of reed switches...	07/25/1995
5427137	Fluid shut off valve and fill level indication A valve to monitor the level of fluid in an above ground storage tank while the tank is being filled, cutoff the flow of fluid when the tank is in a full condition, and as long as the filling pressure is on the valve the valve will remain cutoff even if t...	06/27/1995

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Class 200/84C - Magnet