Class 218/132 - Alloy

Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter wherein the substance composed of two or
No. of patents: 31
Last issue date: 11/15/2005

Number	Title	Issue Date
6965089	Axial magnetic field vacuum fault interrupter An improved vacuum interrupter is disclosed. The vacuum interrupter includes a ring-shaped structure placed between a contact support structure and an electrical contact associated with the contact support structure. A resistivity of the ring-shaped structure is hig...	11/15/2005
6657149	Vacuum interrupter with a vapor shield A vacuum interrupter with a tubular insulator, to dielectrically optimize the fixing of a vapor shield which is provided at an encircling step of the ceramic insulator. A holding ring is assigned to the vapor shield and has a cylindrical region, which is ...	12/02/2003
6107582	Vacuum valve A vacuum valve which has a contact material having a constituent of high electrical conductivity such as Cu and an anti-arcing constituent including Cr in which particles whose particle size is in the range 0.1~150 μm represent at least 90 volume %, and ...	08/22/2000
5994850	Switching arrangements wherein a cylindrical trigger electrode is arranged around a gap between an anode and cathode for establishing a discharge therebetween A switch for switching large currents and large charges includes an anode separated from a cathode with a cylindrical trigger electrode located around the anode and the gap. The cathode is of a metal such as zinc, cadmium, tin or magnesium. During operati...	11/30/1999
5852266	Vacuum circuit breaker as well as vacuum valve and electric contact used in same According to the present invention there are provided a highly reliable electrode of high strength which undergoes little change even with the lapse of time, and a method for making the same, as well as a vacuum valve using such electrode and a vacuum cir...	12/22/1998
5726407	Contact electrode for vacuum interrupter A contact electrode for a vacuum interrupter including a conductive component having at least one selected from the group consisting of copper and silver, and an arc-proof component with a melting temperature of more than 1500° C. In the contact electrod...	03/10/1998
5691521	Vacuum circuit breaker with improved contact assembly A vacuum switch having a fixed side electrode unit and a movable side electrode unit mounted in a vacuum vessel. Each electrode unit includes an arc electrode, an arc electrode supporting member for supporting the arc electrode, a coil electrode and a con...	11/25/1997
5612523	Vacuum circuit-breaker and electrode assembly therefor and a manufacturing method thereof A portion of a highly conductive metal member is infiltrated in voids of a porous high melting point metal member, and both the metal members are integrally joined to each other. An arc electrode portion 13 is formed of a high melting point area 11 in whi...	03/18/1997
5557083	Vacuum circuit breaker and electric contact According to the present invention there are provided a highly reliable electrode of high strength which undergoes little change even with the lapse of time, and a method for making the same, as well as a vacuum valve using such electrode and a vacuum cir...	09/17/1996
5254817	Vacuum switch tube A vacuum switch tube comprises a stationary electrode and a movable electrode, each of which includes a main electrode and an auxiliary electrode. The main and auxiliary electrodes of each of the stationary and movable electrodes are formed of an alloy of...	10/19/1993
4777335	Contact forming material for a vacuum valve A contact forming material for a vacuum valve or vacuum circuit breaker comprising (a) a conductive material consisting of copper and/or silver, and (b) an arc-proof material consisting of chromium, titanium, zirconium, or an alloy thereof wherein the amo...	10/11/1988
4686338	Contact electrode material for vacuum interrupter and method of manufacturing the same A novel contact electrode material for vacuum interrupters is disclosed, by which the chopping current value inherent in contact material can be reduced so that it is possible to stably interrupt small lagging current due to inductive loads without genera...	08/11/1987
4626282	Contact material for vacuum circuit breaker Contact material for vacuum circuit breaker according to the present invention contains (1) copper, (2) molybdenum, and (3) niobium or tantalum....	12/02/1986
4553003	Cup type vacuum interrupter contact The present invention is directed to a cup type vacuum interrupter contact comprised of a holder portion and a contact portion. The holder portion is cup shaped and has a base and side walls extending vertically from the base. The contact portion is circu...	11/12/1985
4551596	Surge-absorberless vacuum circuit interrupter A small-sized, light weighted vacuum circuit interrupter is provided. The interrupter comprises a vacuum container confining a vacuum atmosphere of a pressure less than 10-5 mmHg and a pair of electrodes at least one of which is a movable elect...	11/05/1985
4547639	Vacuum circuit breaker A vacuum circuit breaker comprising a vacuum vessel and a pair of electrodes disposed in the vessel, which is superior in chopping current characteristic, at least a contact of at least one of the electrodes being made of a member having a skeleton of an ...	10/15/1985
4546222	Vacuum switch and method of manufacturing the same Disclosed is a vacuum switch having a container and a pair of contact electrodes, and a method of manufacturing the same, in which at least one of the contact electrodes is constituted by a member made up of a skeleton containing cobalt as its principal c...	10/08/1985
4540861	Contact material for vacuum circuit interrupter A contact material for use in a vacuum circuit interrupter which simultaneously provides superior current interrupting performance and breakdown voltage. The contact material of the invention includes components of copper, tantalum and at least one of cob...	09/10/1985
4501941	Vacuum interrupter contact material A vacuum interrupter electrical contact which exhibits an improved voltage withstand characteristic. The electrical contact comprises a minor portion of selected refractory metal and a major portion of dispersion strengthened copper....	02/26/1985
4486631	Contact for vacuum circuit breaker A contact for a vacuum circuit breaker is disclosed which contains copper as a first component and also at least two elements of the group of chromium, molybdenum, and tungsten as the other components. Each of these other components is contained in an amo...	12/04/1984
4471184	Vacuum interrupter A vacuum interrupter has a capacity of breaking high voltage and large electric current, and excellent anti-welding characteristics, and prevents generation of harmful surges by current chopping and reignitions, and particularly prevents surges by multi-r...	09/11/1984
4453054	Contact apparatus for vacuum switches Contact apparatus for vacuum switches. It includes a fixed and a movable contact bolt. Each has an end portion with an end face facing the other. Two disc-shaped substantially identical contacts surround the end portion of each of the contact bolts, and e...	06/05/1984
4446346	Vacuum interrupter A vacuum interrupter comprising a pair of fixed and movable electrode rods having a flange portion identical shape, a pair of fixed and movable electrodes of the magnetic arc driving type having a central hole and two annular recessed fitting portions of ...	05/01/1984
4347413	Electrodes of vacuum circuit breaker An electrode of a vacuum circuit breaker, having a high dielectric strength, large breaking current and superior non-welding characteristic. The electrode is made of a cast alloy comprising copper, 20 wt% or less of rare earth metal such as lanthanum, cer...	08/31/1982
4323590	Method for improving switch contacts, in particular for vacuum switches Method for improving switch contacts in particular enhancing the voltage endurance, lowering the chopper level and improving the electrical conductivity for the use in vacuum switches in which ions are implanted of material improving the above said charac...	04/06/1982
4231814	Method of producing a vacuum circuit breaker A method of producing a vacuum circuit breaker, the breaker contacts of which are made of a cast alloy which contains copper or a copper alloy as its main component and, as the sub-component, a metal having a lower melting point and a higher vapor pressur...	11/04/1980
4229631	Vacuum-type circuit breaker A vacuum-type circuit breaker comprising an evacuated container, and a pair of contacts disposed in the container and adapted to be moved between an open position and a closed position to permit a circuit breaking arc to be generated across the contacts, ...	10/21/1980
4129761	Vacuum circuit breaker A vacuum circuit breaker comprising an evacuated envelope and a pair of movable conductive rods within the envelope having points of contact equipped with contact members, wherein the conductive rods slide into and out of engaging contact, the improvement...	12/12/1978
4129760	Vacuum circuit breaker A vacuum circuit breaker comprising an evacuated envelope and a pair of movable conductive rods within the envelope having points of contact equipped with contact members, wherein the conductive rods slide into and out of engaging contact, the improvement...	12/12/1978
4091248	Vacuum-type circuit breaker In a vacuum-type circuit breaker, a contact is composed of a principal component material of Cu alloy, to which a Pb-Bi alloy, containing either 18 to 45 weight % Bi or 65 to 80 weight % Bi and at least one of either cobalt or iron are added. Said contact...	05/23/1978
3997748	Vacuum interrupter with primary electrode surrounded by high dielectric strength shield When the butt contacts of a vacuum arc discharge device are parted, at least one of the contacts is withdrawn into a high dielectric strength shield, giving the device high current interruption capability. The shield may be grounded to an endwall of the d...	12/14/1976

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Class 218/132 - Alloy