Class 218/135 - Bellows

Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including a folding, flexible, or collapsible
No. of patents: 39
Last issue date: 03/20/2007

Number	Title	Issue Date
7193172	Gas-insulated switchgear tank In a gas-insulated switchgear tank in which an electric insulating characteristic is improved by a gas, and which has a vacuum circuit-breaker, a disconnecting switch, and a container in which container the vacuum circuit-breaker and the disconnecting switch are arr...	03/20/2007
7041930	Bellows for use in vacuum capacitor A vacuum capacitor includes a vacuum vessel, stationary and movable electrodes arranged in the vacuum vessel, and a bellows which follows the movable electrode to maintain the hermeticity of the inside of the vacuum vessel and which serves as a current path, wherein...	05/09/2006
6946614	Circuit breakers A circuit breaker includes an interrupter coaxial with a current sensor or transformer, the combined assembly being encapsulated within solid dielectric material and supported by an earthed tube mounted on an earthed housing. Detection by the sensor of a current ove...	09/20/2005
6927356	Enclosed switchgear In a switchgear, oscillation of a moving current-carrying shaft and a moving contact of a vacuum valve is minimized, offset load on the contact surface is reduced, and friction the portion supporting the moving current-carrying shaft is reduced. A vacuum valve is di...	08/09/2005
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
6417472	Vacuum switching chamber having an annular insulator A vacuum switching chamber is provided for power switches in the low-voltage range, and has compact design and a high switching capacity. A housing of the switching chamber includes plate-type current terminals, a cylindrical wall part that surrounds flat...	07/09/2002
6310310	Encapsulated vacuum interrupter module removably mounted in a housing A high voltage electric switch includes an insulated housing with an opening therethrough and an interior surface. The housing has an upper open end and a lower open end. A conductive upper terminal pad has a downwardly extending bar, wherein the upper te...	10/30/2001
6172317	Foam encapsulated vacuum interrupter module removably mounted in a housing A high voltage electric switch includes an insulated housing with an opening therethrough and an interior surface. The housing has an upper open end and a lower open end. A conductive upper terminal pad has a downwardly extending bar, wherein the upper te...	01/09/2001
6114647	Bellows and vacuum switch using the bellows A bellows, of which one end portion is fixed to a movable lever passing through a vessel wall and the other end portion of which is fixed to the vessel wall, has a spring constant at a central portion in an expansion direction which is smaller than that a...	09/05/2000
6107592	Vacuum switching apparatus A vacuum switching apparatus for automatically performing a series of breaking and disconnecting operations includes a fixed electrode and a movable electrode mounted in a vacuum vessel. The movable electrode is sequentially movable between a closing posi...	08/22/2000
6098663	High impact bellows A bellows structure for use in high velocity, linear motion applications and which incorporates self-damping is disclosed. The bellows structure utilizes a plurality of thicker convolutions at each end of a regular bellows section to join the bellows sect...	08/08/2000
6043446	Vacuum switch including shield and bellows mounted on electrode support structure located in electrode circumferential groove An assembly and associated method are provided for use with the stationary and moveable contact sub-assembly portions of a vacuum interrupter. This assembly employs a groove machined circumferentially into an electrode of the sub-assembly in conjunction w...	03/28/2000
5597992	Current interchange for vacuum capacitor switch The current interchange includes a housing disposed on a high voltage circuit interrupter. The movable switch contact extends into the housing with a guide member attached to the end of the movable switch contact. The housing includes a base attached to o...	01/28/1997
5594224	Vacuum circuit interrupter A low cost and highly reliable vacuum circuit interrupter and a method of manufacturing the same improve production efficiency and vacuum tight sealing property of the vacuum circuit interrupter. In the vacuum circuit interrupter, within a sealed vacuum v...	01/14/1997
5543598	Switch having a vacuum interrupter A switch has a vacuum interrupter and a switch housing which holds the vacuum interrupter between two supply terminals. The vacuum interrupter contains a tubularly constructed, evacuated housing with a fixed contact member and movable contact member. A mo...	08/06/1996
5510592	Vacuum switch A vacuum switching chamber includes a switching chamber housing having two housing parts. The two housing parts are constructed in the shape of pots or bells and each have a base which encloses an opening through which a respective supporting stalk passes...	04/23/1996
5191180	Gas-insulated switchgear including a vacuum switch, operating mechanism and plural bellows A gas-insulated switchgear in which a vacuum switch main contact assembly constituted by a fixed contact element and a movable contact element is enclosed in a vacuum tank. The vacuum switch has a movable terminal fixed at its one end to the movable conta...	03/02/1993
5168139	Load-break switch having a vacuum interrupter and method of operation A load-break switch includes a vacuum interrupter and two blade-type switches. The vacuum interrupter comprises an insulating, tubular housing with two conductive end caps and two coaxially opposing contact studs. The contact surfaces of the contact studs...	12/01/1992
4962289	Switch chamber for a vacuum switch A switch chamber for a vacuum switch including a housing composed of a ceramic insulating tube, a contact pin mounting a stationary contact within the housing and a terminating cover connecting the insulating tube with the contact pin in a vacuum-tight ma...	10/09/1990
4672156	Vacuum interrupter with bellows shield A relatively small vacuum bottle is taught in which the fixed electrically conductive end of the fixed contact member has cup-like cylindrical walls for forming part of an arc chamber. A ceramic main body for the vacuum interrupter is axially aligned with...	06/09/1987
4585913	Bellows device A bellows device having a plurality of recesses and ridges in the direction of expansion and contraction is used for a movable part of a vacuum switch tube. The thickness of an middle part in the direction of expansion and contraction is 1.2 times or more...	04/29/1986
4528432	Vacuum interrupter A vacuum interrupter, an envelope of which includes a pair of electrical lead rods of copper or copper-based alloy, one lead rod being brazed vacuum-tight to one end plate via a first tubular sealing member fitted onto one rod, and a bellows surrounding a...	07/09/1985
4499349	Vacuum interrupter A vacuum interrupter has a hollow metallic cylinder, insulating end plates made of inorganic insulating material and connected to the opposite ends of the metallic cylinder, stationary and movable lead rods which extend into the metallic cylinder through ...	02/12/1985
4497990	Vacuum switch tube Vacuum switch tube, including a housing, a stationary and an axially movable contact being mutually aligned in the housing, a bellows vacuum-tightly connecting the movable contact to the housing, a stud bolt being connected to the stationary contact for m...	02/05/1985
4492837	Guide means for the movable contact rod of a vacuum interrupter A vacuum interrupter comprises an end plate having a central opening through which a movable contact rod extends. A tubular metallic bellows surrounds the contact rod and includes a plurality of annular convolutions at its inner diameter. Guide structure ...	01/08/1985
4482790	Vacuum interrupter A vacuum interrupter (10) has a metallic member (11, 13) for a vacuum envelope and an insulating member (12a, 12b) for the vacuum envelope, made of unglazed insulating ceramics. A pair of separable stationary and movable contacts (24, 29) contained in the...	11/13/1984
4481390	Vacuum circuit interrupter A vacuum circuit interrupter includes a cylinder made of a metal relatively easy to deform plastically, and first and second insulating disks closing the ends of the metallic cylinder to form therewith an evacuated envelope. A stationary rod enters the en...	11/06/1984
4431885	Vacuum interrupter A vacuum interrupter comprises a vacuum vessel 3, a pair of electrodes 4, 5 disposed within the vacuum vessel 3 so that one is in contact with the other or away therefrom, and a bellows 17 for allowing a movable electrode 5 to be movable with an air-tight...	02/14/1984
4386253	Switch There is described a low voltage switch for currents up to several 1000 amps, as may occur in galvanic plants. The switch comprises contact elements being carried opposite to each other by supporting plates which are actuatable by axially effective forces...	05/31/1983
4256938	Electrical control device for high and low voltage installations An electrical control device for high and low voltage installations with at least one switch including a stationary contact fastened to a connecting part of an insulated feed or supply line and also comprising a movable counter contact operable by way of ...	03/17/1981
4130781	High voltage d-c vacuum interrupter device with magnetic control of interrupter impedance with movable contact A circuit interrupter which can be used as a high voltage d-c breaker or fault current limiter transfer switch or the like contains a pair of cooperable contacts disposed in an evacuated container. One of the contacts also serves as the cathode of a magne...	12/19/1978
4079217	Vacuum interrupter with bellows dampener Apparatus for improving the life of metallic bellows used in a hermetically sealed device having a movable element therein such as, vacuum relays and circuit breakers. The convolutions of the metal bellows are filled by a silicone dielectric gel for an ax...	03/14/1978
4077114	Vacuum power interrupter This invention discloses a vacuum power interrupter, having high reliability of vacuum sealing, which is manufactured by using the most suitable brazing material whose main component is Cu or Au for each component of vacuum power interrupter in one brazin...	03/07/1978
4075448	Cell bypass switches for electrochemical cell systems An electrochemical cell circuit has vacuum interrupter cell by-pass switches provided in order to prevent the impurities in the environment, caused by leakage from the electrochemical cells, from interfering with the switch operation....	02/21/1978
4071727	Vacuum-type circuit interrupter with means for protecting its bellows against mechanical damage A guide sleeve for the movable contact rod of a vacuum-type circuit interrupter fits within the usual tubular bellows of the interrupter. The bellows has some of its annular convolutions located axially-inwardly of the axially-inner end of the guide sleev...	01/31/1978
3996437	Vacuum contactor for motor control and method of making A vacuum contactor for motor control applications and method of making the same that produces a switch of minimum size and extremely long mechanical life. This method comprises the step of heating the vacuum assembly to not over 450° C during the evacuat...	12/07/1976
3969598	Vacuum-type circuit interrupter with a plurality of sets of contacts in parallel This vacuum-type circuit interrupter comprises a plurality of pairs of separable contacts located within an evacuated envelope and electrically connected in parallel. The movable contact of each pair is mounted on a long, slender contact rod through which...	07/13/1976
3953693	Vacuum switch with integrated capacitor shield A vacuum switch with integrated capacitor shield comprising an evacuated insulating envelope provided with metallic end cap closures through which relative movable contact rods extend; the evacuated envelope encloses a plurality of shields which also serv...	04/27/1976
3950628	Bellows type shorting switch A high current shorting switch wherein relatively movable contacts are surrounded by a flexible bellows which forms a hermetically sealed chamber, within which the contacts are disposed. The contacts are supported on heavy current carrying supports which ...	04/13/1976

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Class 218/135 - Bellows