Class 200/84R - FLOAT

Subclass of Class 200 - Electricity: circuit makers and breakers
Definition: Devices in which the contact is operated by the movement
No. of patents: 156
Last issue date: 07/12/2011

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Number	Title	Issue Date
7977591	Liquid level monitor including electromechanical float switch having reduced liquid migration into the switch A liquid level monitor (100) includes a liquid bowl cavity (102) having a liquid sampling port (106). A switching device cavity (104) is formed within an upper portion of the housing (105) having an electromechanical switching devi...	07/12/2011
7696445	Oil level detecting switch Oil level detecting switch, which detects an amount of lubricant oil stored in an oil pan, includes: a switch case having through-holes to permit entry and discharge of oil into and out of the switch case; a float of a spherical shape having smaller specific gravity...	04/13/2010
7615716	Position responsive switch A position responsive switch. A position responsive switch comprises of a two chamber housing having a first and a second chamber. An aperture is disposed between the two chambers. A first lead wire and a second lead wire extend through the second chamber. A first a...	11/10/2009
7521639	Safety switch A safety switch for sensing the level of water in a condensate pan has a molded plastic body with an attachment section and a float probe. The attachment section includes a collar that fits over and connects to the side edge of the condensate pan. The float probe co...	04/21/2009
7420134	Fluid level switch The present invention provides a float level switch featuring a housing; an actuator shaft arranged in the housing; and a low force shaft seal assembly arranged between the actuator shaft and the housing, having a combination of disks or seals, one being made of a s...	09/02/2008
7414209	Liquid level sensor switch A liquid level sensor switch comprising a case, a rod type guide vertically extending from an inside bottom center of the case, a float having a center bore fitted on the guide with a clearance allowing the float to freely move up and down along the guide inside the...	08/19/2008
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
7334536	Pop-up sewer backup indicator An improved sewer backup indicator. The sewer backup indicator is installed into a sewer cleanout cap housing which comprises a pop-up device that detects and holds the detection of a back up in the sewer system, which is due to number of reasons. This invention hel...	02/26/2008
7325565	Backflow valve The backflow valve of the present invention includes a valve housing having a cavity therein with an inlet and an outlet to the valve cavity. A switch is in communication with the valve cavity and is moveable from an off position to an on position in response to liq...	02/05/2008
7322234	Watertight fuel-gauge housing A watertight fuel-gauge housing comprises a housing at least partially positioned in the interior of a fuel tank; a gauge mechanism within said housing for providing an indication of the level of fuel within said tank according to the position of a floating device c...	01/29/2008
7321102	Float switch transient suppression device A float switch system for limiting to desirable levels current and energy entering a tank of combustible liquid comprises: a float switch disposed within the tank; an interface circuit external to the tank and coupled through wiring to the float switch; a passive tr...	01/22/2008
7271359	Float switch assembly A fluid height sensor (10) includes a float (14) with an arm (20) fixed to a shaft (40) that extends into a cavity (30) in a housing (12). A switch assembly (32) in the housing includes a switch (50) formed by ...	09/18/2007
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
7204143	Liquid level controller An apparatus and methods of using the apparatus are disclosed. Preferably, the apparatus includes at least a fluid level detection portion communicating with a fulcrum that provides at least a first lobe and a second lobe, and a control portion responsive to the fir...	04/17/2007
7191649	Water level sensor A liquid level sensor apparatus for monitoring the drain line of condensate from an air handler of a refrigeration system senses the presence of backup liquid in a vertical pipe in the drain system. A closure of the upper end of the pipe supports a magnetic switch a...	03/20/2007
7182419	Out of ink signal mechanism for an inkjet printer An out of ink signal mechanism for an inkjet printer having at least one inkbag is disclosed. The signal mechanism includes a printed circuit board having a circuit associated with each inkbag, a contact spring and at least one lifter. The contact spring is biased t...	02/27/2007
7170020	Circuit breaker and terminal cover A circuit breaker includes terminals with screws on a power supply side and a load side disposed at a front end section and a rear end section of a main body case containing a current interrupting unit and a switching mechanism. A terminal cover is detachably attach...	01/30/2007
7140698	Hydraulic control and operation system for a railroad car retarder A hydraulic control and operating system is provided for a railroad car retarder to control the movement of railroad cars in railroad classification yard. The system utilizes a double-acting hydraulic cylinder to operate the retarder mechanism and includes a hydraul...	11/28/2006
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
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
7049534	Float switch A float switch comprises a hollow main member in which a bob and a switch are provided. The switch has a bar to control a circuit therein and is connected with a wire, and the bob is connected to the bar of the switch via a L-shaped activating plate whereby the swit...	05/23/2006
7000620	Dishwasher float mounting bracket with retainer cover A float mounting plate is provided for a dishwasher to limit the level of water in the dishwasher tub. The float has a stem extending downwardly through a stand pipe in the bottom of the tub and into a switch bracket which houses the water level control switch. A ta...	02/21/2006
6992259	Multi-purpose condensate switch A float switch made from plastic and impervious to corrosion, with improvements over the prior art including a more responsive operation resulting from use of a wide float switch body and a closely fitting housing that allow rapid shut-off of condensate production a...	01/31/2006
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
6870110	Float switch with protective boot Disclosed herein is a fluid level float switch and protective boot therefore. The boot is adapted to engage a detent portion of the float switch in a secure watertight fashion. The boot is adapted to flexibly accommodate movement of the float within the boot in resp...	03/22/2005
6864445	Latching fluid level switch A latching fluid level switch which includes an elongated shaft member having a lower end and an opposite upper end with both ends containing a buoyant float member. The upper end is pivotally anchored to a tank wall and capable of having its lower end being moved b...	03/08/2005
6730865	Electrical inductance overflow switch system An electrical inductance overflow switch comprises a housing with an upper portion with a main central tube with a hole from top to bottom. A sideways extension runs outwards from the tube and terminates with a mounting clamp with gripping serrations. The lower port...	05/04/2004
6610952	Vacuum cleaner actuator switch A switch assembly for a wet/dry vacuum cleaner is disclosed. The switch assembly includes a switch having a movable arm to connect first and second conductive terminals with a rocker arm pivotally attached to the switch. The rocker arm is operable by an a...	08/26/2003
6559397	Dishwasher float retainer for dishwasher float switch assembly A float retainer is provided for a dishwasher to limit the level of water in the dishwasher tub. The float has a stem extending downwardly through a stand pipe in the bottom of the tub and into a switch bracket which houses the water level control switch....	05/06/2003
6474952	Sump pump motor switch assembly A sump pump motor switch assembly for a sump pump including a motor casing and an end shield, includes a switch assembly and a housing mounted to the end shield. A cam actuator is connected to the housing and a sump pump actuation switch is mounted with t...	11/05/2002
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
6254351	Snap-acting float assembly with hysteresis A float assembly for use in actuating a switch based on the level of a fluid includes a pivot member having a pivot axis and a switching surface. First and second floats are coupled to the pivot member so that at a first fluid level the first and second f...	07/03/2001
6239394	Waterproof switch device A waterproof switch device is for use with an elongated actuator in a water containing chamber, and includes a top cover wall spaced apart from the chamber and having a bore for movement of the actuator in response to a reach of a predetermined water leve...	05/29/2001
6084520	Leak collection and supply shut off system A new leak collection and supply shut off system for closing off the supply of water and energy to a water heater in the event of a leak. The inventive device is designed for use with a water heater that has a tank, a water inlet pipe, a water outlet pipe...	07/04/2000
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
6069330	Mechanical shut-off and bypass assembly A mechanical shut-off and bypass assembly for controlling operation of a wet/dry vacuum cleaner includes a switch movable between on and off positions. A toggle member is pivotably mounted with respect to the switch and is movable to operate the switch be...	05/30/2000
5999101	Liquid level alarm system A liquid level alarm system is activated when liquid in a container falls below a predetermined level. The system contains an alarm located outside the container. The alarm is electrically connected to a switching device. The switching device may have a p...	12/07/1999
5945913	Liquid level alarm system A liquid level alarm system is activated when liquid in a container falls below a predetermined level. The system contains an alarm located outside the container. The alarm is electrically connected to a switching device. The switching device may have a p...	08/31/1999
5872509	Device for sensing the amount of oil in oil pans A device for sensing the amount of oil in oil pans of internal combustion engines is disclosed. In the device, a bottom plunger is fixedly mounted onto the inside bottom of an oil pan, with a contact terminal being mounted onto the top surface of the bott...	02/16/1999

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Class 200/84R - FLOAT