Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8089021 | Vacuum circuit breaker An object is to provide a vacuum circuit breaker that has a lower electrical and thermal resistance at contacting portions between a movable electrode-rod and a movable-electrode-side connection-terminal so that a continuous current-carrying capacity is made larger ... | 01/03/2012 |
| 8049130 | Vacuum insulated switch and vacuum insulated switchgear The vacuum insulated switch includes a vacuum container; two stationary contacts contained in the vacuum container; two movable contacts contained in the vacuum container, each capable of contacting and separating from a corresponding one of the stationary contacts;... | 11/01/2011 |
| 7897890 | Vacuum insulated switchgear A vacuum insulated switchgear is provided with: an enclosure having a switch block defined by a grounded metal plate, a bus block positioned above the switch block, and a cable block positioned on the rear side of the bus block; a bus provided in the bus block and c... | 03/01/2011 |
| 7829814 | Vacuum circuit interrupter grounding assembly A vacuum circuit interrupter having a pole unit structure and an operating mechanism structured to move the vacuum circuit interrupter contacts between a first, closed position, wherein a movable contact is coupled to, and in electrical communication with, a fixed c... | 11/09/2010 |
| 7804038 | Multi-vacuum contactor control system A control system for controlling and synchronizing a plurality of medium-voltage vacuum contactors comprises a two-level network structure. A dedicated network includes a plurality of servant control units operably coupled to the vacuum contactors and configured to ... | 09/28/2010 |
| 7425687 | Vacuum insulated switchgear A vacuum insulated switchgear comprising: a vacuum container; a vacuum insulated switch having a movable contact connected to a movable electrode and a fixed contact connected to a fixed electrode for interrupting and closing current; an operating rod connected to t... | 09/16/2008 |
| 7323652 | Gas insulated switchgear The gas insulated switchgear includes a rotary shaft which penetrates a pressure vessel is connected with a moving part which is housed in the pressure vessel by way of a lever, and is connected to the moving part, and brackets which support the rotary shaft and are... | 01/29/2008 |
| 7313964 | Method and apparatus for the detection of high pressure conditions in a vacuum-type electrical device A method for detecting a high pressure condition within a high voltage vacuum device includes detecting the position of a movable structure such as a bellows. The position at high pressures can be detected optically by the interruption of a light beam reflected by a... | 01/01/2008 |
| 7239490 | Medium voltage vacuum circuit interrupter An encapsulated medium voltage vacuum circuit interrupter includes a line terminal, a load terminal, a vacuum interrupter, an operating mechanism and an elongated, insulated, generally cylindrical encapsulating housing. The vacuum interrupter includes a vacuum envel... | 07/03/2007 |
| 7236071 | Medium voltage vacuum contactor A medium voltage vacuum contactor comprising for each pole, a vacuum envelope which contains a fixed contact and a corresponding movable contact; and actuating means providing the energy required to move the movable contacts, characterized in that said actuating mea... | 06/26/2007 |
| 7225676 | Method and apparatus for the detection of high pressure conditions in a vacuum switching device A method for detecting a high pressure condition within an interrupter includes measuring the intensity of light emitted from an arc created by contacts within the interrupter, comparing the measured intensity with a predetermined value, and providing an indication ... | 06/05/2007 |
| 7186942 | Three-position vacuum interrupter disconnect switch providing current interruption, disconnection and grounding A vacuum circuit interrupter includes a line conductor, a vacuum interrupter, a load conductor, a ground conductor and an operating mechanism. The vacuum interrupter includes a fixed conductor and a vacuum envelope containing a fixed contact and a movable contact mo... | 03/06/2007 |
| 7148677 | Vacuum circuit interrupter including circuit monitoring leakage or loss of vacuum and method of monitoring a vacuum interrupter for leakage or loss of vacuum A method monitors a vacuum interrupter for leakage or loss of vacuum. The vacuum interrupter includes a line side, a load side and separable contacts electrically connected therebetween. The line side has a line side voltage and the load side has a load side voltage... | 12/12/2006 |
| 7098418 | Vacuum circuit breaker, vacuum circuit breaker contact slow closing method, and contact erosion measuring method and contact gap length setting method using that slow closing method An adjusting bolt is screwed into a nut attached to a dolly, and is disposed such that a central axis thereof is parallel to a closing and opening direction of a contact. A lever is attached to a shaft. An electrically-insulating rod is coupled to a first end of the... | 08/29/2006 |
| 7075027 | Spring-charged mechanism assembly employing two trunnion members moveable in different planes and circuit interrupter employing the same A mechanism assembly is for a vacuum circuit interrupter including a vacuum housing including a stationary contact and a moveable contact, and an operating mechanism including a drive rod. The mechanism assembly cooperates with the drive rod to open and close the co... | 07/11/2006 |
| 7053327 | Apparatus and method for use in circuit interrupters The present invention provides improved and more efficient methods and apparatus for maintaining and/or adjusting over-travel gaps and contact wipe portions in operating rod assemblies of circuit interrupters. According to one embodiment of the invention, a circuit ... | 05/30/2006 |
| 7054128 | Control apparatus for electromagnetically driven valve and control method of the same A control apparatus for an electromagnetically driven valve is provided which is applied to an electromagnetically driven valve in which a movable portion including an armature and a valve element is driven using an electromagnetic force generated by an electromagne... | 05/30/2006 |
| 7038157 | Vacuum circuit breaker with coaxial coil for generating an axial magnetic field in the vicinity of the contact members of the circuit breaker Vacuum circuit breaker, provided with a casing, in which a fixed and movable contact member are each attached to a supporting contact rod and supported therein in a mutually electrically isolated manner, and a coil coaxial to the casing and surrounding the contact m... | 05/02/2006 |
| 7019228 | Method for controlling a displaceable electrical switching module The invention relates to a method for controlling an electrical switching module which can be displaced between an entry position and an exit position. The switching module comprises switching contacts of vacuum switching tubes; an isolating element which can be als... | 03/28/2006 |
| 7015410 | Drive device for a switching tube with a fixed and movable contact part The invention relates to a drive device for a switching tube with a fixed and movable contact part, said movable contact part being controlled by a plastic switch rod (SS) which remains substantially unstressed when the contact parts are connected or disconnected an... | 03/21/2006 |
| 6998549 | Interlock assembly and safety switch employing the same An interlock assembly is for locking the operating assembly of a safety switch when the cover thereof is open or removed. The safety switch includes an enclosure with the cover and side walls. The operating assembly includes a bracket and a spring-toggle mechanism w... | 02/14/2006 |
| 6965088 | Interrupting apparatus having operations counter and methods of forming and using same A portable circuit interrupting apparatus for use on a circuit isolating device and associated methods of formation and use are provided. The portable circuit interrupting apparatus includes a main housing body and a sleeve coaxially mounted therein. The sleeve is s... | 11/15/2005 |
| 6930271 | Circuit interrupter including linear actuator and manual pivot member A power circuit interrupter includes a housing having an opening, one or more vacuum interrupters including separable contacts, and an operating mechanism, supported by the housing, adapted to open and close the contacts. A linear actuator cooperates with the operat... | 08/16/2005 |
| 6897396 | Switch gear and method of manufacturing thereof By molding a plurality of vacuum valves (7), (13) having differing functions together with an input member (3) and an output member (21) en bloc in a resin layer (23) to form a switch gear (1), the present invention seeks to... | 05/24/2005 |
| 6849971 | Drive devices for interrupter units in power supply and distribution switchgear Drive devices for switchgear interrupter units, having movable contact pieces that can be controlled by solenoid drives are described. The drives of the movable contact pieces being controllable by linear motor drives. The interrupter units are realized by vacuum ci... | 02/01/2005 |
| 6781079 | Switch actuator The present invention consists in a switch actuator to move an air brake switch (124) such as those commonly found in power transmission lines, between an open and closed position wherein the actuator (4) includes a first rotatable member in mechanical... | 08/24/2004 |
| 6770832 | Vacuum electrical interrupter with pull-to-close mechanism An improved electrical interrupter apparatus includes a stationary contact and a movable contact within an enclosed region, with the movable contact being operatively connected with a drive unit that employs a pull-to-close mechanism to engage the movable contact wi... | 08/03/2004 |
| 6759617 | Vacuum circuit breaker A vacuum circuit breaker includes a plurality of switching mechanism units having movable contacts and stationary contacts for connecting/breaking an electrical circuit between an electric source and an electric load, respectively, and disposed in a lengthwise direc... | 07/06/2004 |
| 6753493 | Electrical circuit interrupting device A circuit interrupting device for use with an electrical power distribution system, comprising a circuit interrupter that includes a primary contact and a movable contact movable relative to the primary contact between a closed position allowing current to pass thro... | 06/22/2004 |
| 6747232 | Vacuum contactor In a vacuum contactor, the armature is initially deflected from an armature rest position through an initial movement distance, and then through a driving movement distance to an armature operating position when a pull-in current is applied to a drive coil. An opera... | 06/08/2004 |
| 6747234 | High voltage interrupter A circuit interrupter including a housing having an internal cavity. The internal cavity includes a space at a first end thereof, and includes an internal wall extending from the space to a second end of the housing. A vacuum interrupter is disposed in the space. Th... | 06/08/2004 |
| 6686553 | Three-phase encapsulated high-voltage circuit breaker for outdoor use A three-phase encapsulated high-voltage circuit breaker for outdoor use, whose interrupter units are arranged in a tubular switch housing which is arranged horizontally. Phase connections of the interrupter units are passed vertically and together through... | 02/03/2004 |
| 6649854 | Vacuum contactor with movable guide element A vacuum contactor includes a stationary contact and a moving contact, which can be moved in order to produce a current-carrying connection. In order to guide the moving contact during its movement in the enclosure, at least one guide element, which can b... | 11/18/2003 |
| 6600124 | Safety interlock between a vacuum interrupter and a disconnect switch An interlock mechanism ensures that a first switch does not switch to a first position unless a second switch is in a second position and that the second switch does not switch from the second position while the first switch is in the first position. The ... | 07/29/2003 |
| 6541727 | Molded case circuit breaker including vacuum switch assembly A molded case circuit breaker incorporates vacuum switches operated by a toggle mechanism. Pole arms tied together by a cross bar are rotated simultaneously by the toggle mechanism. A drive link translates the rotational movement of each pole arm into lin... | 04/01/2003 |
| 6506993 | Drive device for a switching device for medium-voltage switchgear assemblies A device for a switching device, in particular for grounding switches for medium-voltage voltage switchgear assemblies, has a grounding device shaft in a stationary switch panel, which grounding device shaft can be operated manually, is connected by means... | 01/14/2003 |
| 6492609 | Power station switch with a radiator/heat-exchanger A power station switch having high nominal current, the switch comprising a break chamber containing a dielectric gas under pressure and mounted inside a protective sheath which may optionally carry a general flow of cooling air, and a radiator/heat-excha... | 12/10/2002 |
| 6444939 | Vacuum switch operating mechanism including laminated flexible shunt connector A flexible shunt in the form of a flexible member made up of a stack of electrically conductive laminations each of a thickness of no more than about 0.002 inch (0.051 mm) has a moveable end secured by a moveable mount to a moveable contact support of an ... | 09/03/2002 |
| 6410875 | Electrical switchgear apparatus comprising a vacuum cartridge and a flexible electrical connector A switchgear apparatus comprises a vacuum cartridge one contact of which is fixedly secured to a metal rod protruding out from the cartridge. A flexible metallic electrical connector designed to electrically connect the rod to a busbar is provided, at one... | 06/25/2002 |
| 6410874 | Breaking module comprising a vacuum cartridge and fixing means, and an electrical switchgear apparatus comprising such a module A breaking module for an electrical switchgear apparatus comprises a vacuum cartridge comprising a body and a support frame of the cartridge. The cartridge is provided with a metal rod movable in translation and driving a movable contact. A collar both pe... | 06/25/2002 |
