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Electricity: circuit makers and breakers

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Class / Patent application numberDescriptionNumber of patent applications / Date published
200237000 ELECTRIC SWITCH DETAILS 957
200001000 MULTIPLE CIRCUIT CONTROL 510
200502000 SOLID CONTACT 274
200181000 ELECTROSTRICTIVE OR ELECTROSTATIC 143
200052000 SPECIAL APPLICATION 139
200600000 CAPACITIVE SWITCH 131
200500010 INTERLOCKING 100
200430010 SWITCH ACTIVATION INHIBITOR (E.G., UNAUTHORIZED/INADVERTENT USE PREVENTION) 68
200081000 FLUID PRESSURE 46
200402000 SNAP 39
200400000 CONTACT MOVED BY SUDDEN RELEASE OF STORED ENERGY, (E.G., SPRING CHARGER) 36
200051000 COMBINED WITH OR ACTUATED BY CONNECTOR COUPLING 34
200033000 RETARDED 26
200048000 HIGH-POTENTIAL TYPE 23
200501000 GEAR DRIVEN 9
200860500 FOOT OPERATED 8
200573000 CAM OPERATES CONTACT OR MICROSWITCH 8
200085000 WEIGHT 8
200420010 PLURAL SWITCHES CONTROL SINGLE CIRCUIT 7
200401000 TOGGLE MECHANISMS 6
200084000 FLOAT 5
20090294269OIL 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 than the oil and conductive outer surface and provided within the switch case for vertical movement in response to increase/decrease of the oil; and a plurality of fixed contacts provided on the bottom surface of the switch case such that the fixed contacts are placed in a conducting state by the float contacting the fixed contacts.12-03-2009
20090277768Low Oil Trip Assembly for a Fault Interrupter and Load Break Switch - A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.11-12-2009
20090026060Position 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 and second set of contact members are coupled to the first lead wire and second lead wire. A conductive object is disposed within the two chamber housing. The conductive object is disposed in the second chamber and couples a contact member from the first set and second set together to form an electrical communication therewith. The first set of contact members and the second set of contact members are splayed upon and substantially conforming to the contour of an interior surface of the second chamber; and alternate in configuration around the chamber. An airtight container is configured to enclose the two chamber housing.01-29-2009
20080223709FLUID 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 semi-rigid lubricious material, for maintaining a watertight seal with a substantially reduced rotational force or friction on the actuator shaft than a conventional O-ring.09-18-2008
20120125756FLOAT SWITCH - A float switch includes a floater (05-24-2012
20090294269OIL 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 than the oil and conductive outer surface and provided within the switch case for vertical movement in response to increase/decrease of the oil; and a plurality of fixed contacts provided on the bottom surface of the switch case such that the fixed contacts are placed in a conducting state by the float contacting the fixed contacts.12-03-2009
20090277768Low Oil Trip Assembly for a Fault Interrupter and Load Break Switch - A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.11-12-2009
20090026060Position 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 and second set of contact members are coupled to the first lead wire and second lead wire. A conductive object is disposed within the two chamber housing. The conductive object is disposed in the second chamber and couples a contact member from the first set and second set together to form an electrical communication therewith. The first set of contact members and the second set of contact members are splayed upon and substantially conforming to the contour of an interior surface of the second chamber; and alternate in configuration around the chamber. An airtight container is configured to enclose the two chamber housing.01-29-2009
20080223709FLUID 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 semi-rigid lubricious material, for maintaining a watertight seal with a substantially reduced rotational force or friction on the actuator shaft than a conventional O-ring.09-18-2008
20120125756FLOAT SWITCH - A float switch includes a floater (05-24-2012
200047000 LIMIT SWITCH 4
20090321228Limit Switch Control Device - A limit switch control device comprises a shaft, a sensor, an upper limit reed switch, a lower limit reed switch and a drive element that cooperate with a control circuit. The sensor is combined on the shaft which is driven by the drive element, which is provided with an upper limit witch and a lower limit switch, so that when the sensor detects the upper limit and the lower limit reed switches, the upper and the lower limit switches will be triggered to power off the drive element.12-31-2009
20110297516LIMIT SWITCH ASSEMBLY - A limit switch assembly includes a housing having a first end, a second end, an inner surface that defines an inner volume and a spring engagement surface, and an outer surface. A limit switch disposed within the inner volume includes a threaded bushing section at least partially extending from the first end. A spring within the inner volume surrounds the bushing section, and engages the limit switch and the spring engagement surface. A calibration nut threaded onto the bushing section engages the first end of the housing. A seal divides the inner volume of the housing into a first volume and a second volume. A drain hole formed in the housing fluidly communicates the first volume to a surrounding environment. A terminal assembly connected to the second end of the housing seals the second volume from the surrounding environment.12-08-2011
20120199449LIMIT STOP APPARATUS, CIRCUIT BREAKERS INCLUDING LIMIT STOPS, AND METHODS OF USING SAME - A limit stop apparatus for a multi-pole electrical contact assembly is disclosed. The limit stop apparatus interconnects crossbars of respective contact assemblies wherein one or more contact arms are pivotable relative to each crossbar. The limit stop apparatus is configured to engage the one or more contact arms on a same side of the one or more contact arms containing moveable electrical contacts. In one or more embodiments, the limit stop apparatus has a connecting bar with limit stops having arc shields molded to the connecting bar, wherein the arc shields can be phase-to-phase arc shields and contact-to-component arc shields. Circuit breakers and multi-pole electrical contact assemblies having a limit stop apparatus, and methods of operating the multi-pole electrical contact assembly are disclosed, as are other aspects.08-09-2012
20130126315SWITCH - A switch provided with an actuation body to be displaced due to contact with a physical body and operated in accordance with a position of the actuation body includes a mode switching unit (05-23-2013
200190010 PERIODIC 3
20080237000MICRO SWITCH MOUNTING STRUCTURE AND AUTOMATIC ICEMAKER - A micro switch is mounted onto a mounting base attached to a controller of an automatic icemaker. The micro switch generates a signal for controlling the amount of water to be filled in an ice tray. The micro switch is fixed to the mounting base by the first fixing member and the second fixing member. The first fixing member is inserted through a mounting hole formed in a case of the micro switch. The second fixing member is arranged on a surface of the mounting base on an opposite side of a surface mounted with the micro switch, and is fixed to the first fixing member.10-02-2008
20090152076ROTARY SWITCHING DEVICE AND FILE SEARCH SYSTEM USING SAME - The present invention features a rotary switching device and a file search system using the same. In preferred embodiments, the rotary switching device includes a rotary push button, a first switch part, second switch parts, a first contact part, and a second contact part.06-18-2009
20100012470Electrical controller - A segmented rotor comprises two disc-like members electrically charged with opposite polarities having circumferentially spaced interleaved fingers extending in an axial direction electrically insulated from one another and rotationally driven by an insulated shaft. Suitable brushes extend radially into contact with the interleaved fingers to produce repetitive alternate polarity electrical signals at each brush as the rotor rotates. The electrical signals are fed to utilization devices to control their operation.01-21-2010
200182000 LIQUID CONTACT 2
20110036691LIQUID SWITCHES AND SWITCHING DEVICES AND SYSTEMS AND METHODS THEREOF - A dispensing apparatus includes a housing defining a channel, a plunger slidably engaged with an inner surface of the channel, a substrate with one or more passages each having two or more openings, a liquid in each of the one or more passages, at least one fluid, and a force application system. The substrate is disposed in the channel on one side of the plunger. The liquid in each of the one or more passages has a volume which exceeds an internal volume of each the one or more passages and forms a liquid drop around each of the openings. The liquid drops are fluidly connected to one another and each of the liquid drops is individually adjustable between two or more sizes. Each of the sizes and a location of each of the liquid drops define one of two or more switch positions. The fluid is located in the channel on the one side of the plunger and substantially surrounding the liquid drops. The force application system is configured to individually and selectively apply a force on the liquid in each of the one or more passages to control switching between the two or more switch positions of each of the liquid drops. Engaging one or more of the switch positions moves the plunger along the inner surface of the channel away from the substrate.02-17-2011
20100025207ELECTROSTATICALLY DRIVEN HIGH SPEED MICRO DROPLET SWITCH - An electrostatically driven high-speed micro droplet switch includes a substrate having an upper surface containing one or more signal electrodes that are selectively connected via a droplet. The switch includes at least one actuation electrode disposed beneath the upper surface of the substrate, the at least one actuation electrode operatively coupled to drive circuitry. The switch includes a frame disposed on or above the upper surface of the substrate that is configured to hold the droplet in substantially the same location during operation of the switch. In one aspect, the frame is configured to absorb variations in the volume of the droplet placed on the switch, leaving the active meniscus not affected by the variation in volume.02-04-2010
200080000 CENTRIFUGAL 2
20090159418Centrifugal Switching Device of Single-Phase Induction Motor - A centrifugal switching device of a single-phase induction motor includes a centrifuge and pressure switches. The centrifuge includes a centrifugal sleeve, a centrifugal base, shaft coupling blocks, and a spring. The spring is directly fitted on the centrifugal base. Under a centrifugal force generated by the rotation of the motor, shaft coupling blocks I and II slide axially against an axial force of the spring, thus forcing an axial end surface of the centrifugal sleeve to be separated from contacts of the pressure switches, such that a starting winding of a stator ferrite-core coil of the single-phase induction motor is disconnected and a heater is turned on. The shaft coupling blocks I and II adopt a design with round transition, central sliding contact, and smooth rotation, thereby achieving a simple structure, convenient mounting, and safety usage.06-25-2009
20110011718OPERATING MECHANISM FOR CENTRIFUGAL SWITCH - An operating mechanism for a centrifugal switch contains at least: a terminal box, a cover, a movable contact, a static contact, a swing arm, a reset elastic part, and a shifting fork. The movable contact and the static contact are disposed in the terminal box. The shifting fork operates to drive the swing arm to horizontally swing, whereby pushing the movable contact and implementing connection and disconnection between the movable contact and the static contact. The reset elastic part operates to automatically reset the shifting fork and the swing arm. The invention features reduced requirements for dimensional precision and installation precision of components, and low production cost, and is reliable and durable. In addition, the sliding force is uniformly stressed, which ensures accuracy of operation, easy installation, and high operating reliability.01-20-2011
200046000 PATTERN-SHEET CONTROLLED 1
20100126833Method for Assembling a Portable Device Configured with an Energy Storage Device05-27-2010

Patent applications in class Electricity: circuit makers and breakers

Patent applications in all subclasses Electricity: circuit makers and breakers