Class 361/41 - With fuse

Subclass of Class 361 - Electricity: electrical systems and devices
Definition: Subject matter which opens the circuit to the transformer
No. of patents: 30
Last issue date: 01/02/2007

Number	Title	Issue Date
7156763	Ping pong table with folding protection mechanism A ping pong table with folding protection mechanism is disclosed. At least a pair of folding protection mechanisms is installed underneath the table, one on each side. Each folding protection mechanism is composed of at least one guide roller, one steel cable, and o...	01/02/2007
7038570	Protector for thermal switch installed in electromagnetic coils A protective device fitted to an electromagnetic coil to prevent damage to a thermal protective switch installed in the electromagnetic coil beneath the winding. In a preferred embodiment there is a subsequent encapsulation process following manufacture of the coil....	05/02/2006
6995984	Method for producing a large-mass ohmic resistor for protecting electronic assemblies from surges, and an electronic assembly The invention relates to an electronic assembly, in particular for low power consumption electric switching devices such as low power contactors, time relays or the like. In order to provide protection against input current pulses, an ohmic resistor (6) is pr...	02/07/2006
6738247	DC-DC converter A DC—DC converter is composed of an overcurrent cut-off means connected in series to a direct power source, primary windings of a plurality of transformers connected in series to the overcurrent cut-off means, a switching element connected in series to the overcur...	05/18/2004
6696969	Compact fused disconnect switch A fused disconnect switch assembly includes a pull out fuse assembly and a switch housing assembly. The fuse assembly includes a line side conducting portion, a load side conducting portion, and a fuse element therebetween. The switch housing assembly inc...	02/24/2004
6091590	Electromagnetic coil assembly for electromagnetic apparatus An electromagnetic coil assembly for an electromagnetic device comprises a bobbin, a multiple turn winding of electrical wire supported on a flange of the bobbin and a thermal protection device including a pair of lead wires extending from both sides ther...	07/18/2000
5949320	Self fusing solenoid coil A portion of a solenoid coil melts after a predetermined time period has elapsed to interrupt the flow of current through the coil. The portion which melts can include a reduced cross sectional area which increases the resistance of the portion of the wir...	09/07/1999
5854730	Transient and voltage surge protection system and method for preventing damage to electrical equipment A voltage surge suppression system for the protection of electronic equipment from damage from voltage surges and voltage transients has at least one metal oxide varistor electrically connected to a primary power source; a transformer; at least one second...	12/29/1998
5583729	Terminal bushing having integral overvoltage and overcurrent protection A terminal bushing having integral overvoltage and fault current protection includes an insulator having an upper and a lower chamber. Nonlinear resistors are disposed in the upper chamber between a top terminal and an intermediate terminal which are moun...	12/10/1996
5561576	Step down transformer power supply with short circuit protection A step down transformer power supply with short circuit protection which uses a minimal size transformer, as opposed to an energy limiting transformer. The transformer is mounted directly on a PC board without additional mounting hardware, and has a fuse ...	10/01/1996
5416662	Chip-type surge absorber A single three-terminal chip-type surge absorber combines two or three semiconductor surge-absorbing elements with three electrode plates and resin-molding the combination. When more lines must be connected to an electronic device subject to a voltage sur...	05/16/1995
5379178	Method and device for triggering an electromagnetic consumer In the case of a method and a device for triggering an electromagnetic consumer (1), which is connected in series to a switching means (2), the voltage applied to the switching means (2) is fed to a voltage comparison means (12) and compared there to the ...	01/03/1995
5321572	Transformer bobbin A transformer bobbin is provided comprising a frame of approximately a rectangular shape, a first wall arranged on one end of the frame, a second wall arranged on the other end of the frame, and a center wall arranged between the first wall and the second...	06/14/1994
5227758	Bayonet-type fuse and fuseholder assembly A tubular fuseholder housing carries two sets of generally-stationary contacts located at points spaced apart along the length of the housing. Within the housing is a fuse comprising a cartridge and, at opposite ends of the cartridge, terminal contacts fo...	07/13/1993
5204654	Fuse housing having fluid sealing assembly A fuse housing for an oil-cooled transformer that uses a stopper to prevent oil from escaping the transformer tank as the fuse and fuse holder are removed. During normal operation, the stopper is held in an open position by the fuse holder. When the fuse ...	04/20/1993
5200731	Double insulated transformer of the coaxial type and method of assembling the same A double-insulated transformer of the coaxial type comprises a core assembly having a center core, a primary winding assembly assembled to surround coaxially the center core which has a primary bobbin case, a primary coil winding wound around the bobbin c...	04/06/1993
4810991	Encapsulated integral fuse block transformer An assembly which includes a transformer having a primary winding, a secondary winding, wires extending from the windings, a core at least partially disposed within the windings, a mounting flange, a housing surrounding at least a part of the windings and...	03/07/1989
4688143	Fuse well and housing for pad-mounted, double fused switchgear An improved, lowcost double-fused vacuum switchgear apparatus designed for underground electrical distribution systems is provided which makes use of a specially configured oil tank-defining wall and insulative protective fuse well sleeves to give enhance...	08/18/1987
4675771	Fault sensing system for a transformer network A fault sensing system for protecting a transformer, the system including a partial range current limiting fuse connected in series in the primary circuit for the network transformer, a normally open vacuum switch connected to the primary circuit and shun...	06/23/1987
4503413	Spool for transformer in power supply device A spool for a power supply transformer with one flange having attachments for providing the necessary connections to and from the transformer windings and holding fuses in place and another flange having slots for snap-in attachment to a baseplate....	03/05/1985
4454554	Coil bobbin An electromagnetic coil construction consisting of a bobbin having a primary winding and a secondary winding, the bobbin having an end flange at either end of the hub and a central separator flange intermediately spaced between the first and second flange...	06/12/1984
4401963	Resistor insertion fuse A protective fuse comprising a fusible element disposed within an enclosure formed by a gas generating fiber tube connected at one end to a conductor rod and at the other end to an arc intercepting member. The arc intercepting member is connected to an el...	08/30/1983
4320432	High voltage transformer bushing fuse and arrester arrangement A high voltage transformer bushing having an inner conductor extending from a lower end to a point spaced from an upper end and having a side terminal at that point connected to a fuse link which is in turn connected to a high voltage line connector suppo...	03/16/1982
4318150	Protected electrical inductive apparatus Protected liquid-filled electrical inductive apparatus having a dry well fuse assembly which includes a dry well fuse holder sealingly disposed through an opening in the associated metallic casing, separate from the electrical bushings, and a removable fu...	03/02/1982
4275372	Protected electrical inductive apparatus Protected liquid-filled electrical inductive apparatus having a dry well fuse assembly which includes a dry well fuse holder sealingly disposed through an opening in the associated metallic casing, separate from the electrical bushings, and a removable fu...	06/23/1981
4240122	Protective device A protective device for electrical power distribution equipment includes a removable fuse holder and an integral load switch. The protective device may be affixed to a grounded metal enclosure, such as an oil-filled transformer, into which the protective ...	12/16/1980
4117525	Overpressure protection for vaporization cooled electrical apparatus Overpressure protection for a vaporization cooled electrical inductive apparatus. A pressure responsive device is actuated by a predetermined pressure within a sealed housing and de-energizes a pump, thereby stopping the flow of dielectric fluid to the he...	09/26/1978
4002949	Transformer protective system A current limiting fuse and an oil expulsion or weak link type fuse are connected in series with each other and with a transformer primary winding and a grounded element having a part disposed adjacent one end of the expulsion fuse is arranged so that an ...	01/11/1977
3973170	Intrinsic safety barrier A data communication system for an industrial plant includes a plurality of communication stations which are interconnected by a coaxial cable that is required to pass through one or more hazardous areas. The communication stations are energized from a so...	08/03/1976
3953818	Externally bussed, encapsulated current limiting fuse for pad mounted transformers A rigid, unitary, externally mounted combination bus bar and current interrupter especially adapted for protecting pad-mounted transformers from the effects of fault currents is provided which precludes catastrophic transformer failures by ensuring that a...	04/27/1976

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Class 361/41 - With fuse