221 |
High amperage, high efficiency electrical slide switch assembly with
plug and socket contacts |
US139505 |
1993-10-19 |
US5416286A |
1995-05-16 |
Alfred R. Dixon, Jr. |
A high amperage switch is provided for interrupting flow of power through a circuit. First and second connectors are connected in the circuit with the circuit being open between the first and second connectors. An electrically conductive bridging member includes first and second complementary-shaped connectors respectively mateable with the first and second connectors for electrically coupling the first and second connectors together when the bridging member is in the closed position and interrupting the circuit when the bridging member is in an open position. The bridging member is moveable between the closed and opened positions. The present invention is particularly well adapted for use in a vehicle having an electrical circuit for supplying power from a battery on the vehicle to at least one electrical component used on the vehicle. |
222 |
Signal tube operated switches |
US840562 |
1992-02-24 |
US5252796A |
1993-10-12 |
John T. Hedger |
A signal tube operated switch includes a contact arrangement which is moved from a first, open circuit position to a second, closed circuit position by a shock wave or pressure pulse initiated by a detonator. The switch is preferably an electric switch and in at least one embodiment includes a movable conductive piston consisting of at least one portion in continuous conductive engagement with the conductive signal tube. The other portion of the contact arrangement causes a change in the circuit after the contact arrangement is relocated to the second circuit closing position. Accordingly, the overall working efficiency of delay detonators is improved. |
223 |
Destructive device for metal oxide-semiconductors |
US510842 |
1974-09-27 |
US5042386A |
1991-08-27 |
Howard W. Kruse; Richard A. Breitengross |
A pyrotechnic composition containing from 55 to 65 percent by weight Fe.s2 O.sub.3 powder, 15 to 25 percent by weight aluminum powder, 5 to 15 percent by weight Ba(NO.sub.3).sub.2, 2 to 3 percent by weight MoS.sub.2 and 5 to 10 percent by weight Viton A (a copolymer of vinylidene fluoride and hexafluoropropylene) is disclosed as being useful in the destruction of metal oxide-semiconductor chips. |
224 |
Fault current interrupter and explosive disconnector for surge arrester |
US794085 |
1985-11-01 |
US4734823A |
1988-03-29 |
Francis V. Cunningham |
A fault current interrupting disconnector, or fault disconnector, for a surge arrester operates to separate an electrical lead or ground lead wire from a damaged arrester and to interrupt the current flowing through the damaged arrester. The new fault disconnector includes an explosive charge, a tube of ablative material in a surrounding housing which co-acts with the tube to form a venting chamber, and a conductor extending through a portion of the chamber and through the tube. Excessive current heats and explodes the charge. The explosion pulls the conductor from an elongate connection, through the chamber portion and on through the tube; whereby arcing is first delayed, then is initiated in the chamber and then is drawn into and extinguished within the tube. |
225 |
Dynamic seal for gas generator chamber |
US650849 |
1984-09-17 |
US4580020A |
1986-04-01 |
Kiyoshi Norikane |
In an electric circuit interrupter actuator which utilizes gas generator chambers to activate a power cylinder to provide opening and closing of the interrupter, an improved dynamic seal is provided. Such seal works in the reverse direction of an obturator of, for example, a machine gun or artillery piece in that a slidable spring biased sealing ring is provided in the input port to the power cylinder which successively seals with the gas generator chambers which are rotated by it. In order to overcome the friction forces of the initial high velocity gas flow which would otherwise force the ring out of sealing contact, a spring washer is provided having sufficient force to overcome this initial friction force. Thereafter, the high pressure gas exerts a force on the end of the ring in a direction opposite the gas flow to force the sealing ring into tighter engagement. Also, the natural circumferential expansion of the sealing ring, due to the high pressure, promotes radial sealing. |
226 |
Internal combustion circuit breaker |
US594170 |
1984-03-28 |
US4563556A |
1986-01-07 |
Michel Goldstein |
An internal combustion electrical circuit breaker comprising at least one: (a) insulating cylinder; (b) pair of electrical conductors penetrating the cylinder approximately perpendicular to its longitudinal axis at a distance from both cylinder's plane sides; (c) conducting hollow piston contacting the conductors and an insulating pipe at its open portion, which pipe extends within that axis and penetrates the cylinder's first plane side; (d) arcing chamber extending from that plane side to the conductors; (e) pair of arcing blades within the arcing chamber at a distance from the conductors, piston and pipe; (f) valves within the pipe and first plane side, communicating with the arcing chamber and hollow piston; (g) combustion chamber extending from the piston's closed portion to the cylinder's second plane side; and (h) ignition, gas injection and valve means within the plane side and communicating with the combustion chamber.When igniting a fuel-oxygen mixture within the combustion chamber, the piston is propelled into the arcing chamber and onto the pipe therein, while the gases within hollow piston and arcing chamber blow across the sparks developing between conductors, piston and arcing blades. This circuit breaker is re-set by injecting compressed gas through the pipe, thereby forcing the piston into the combustion chamber and back onto the conductors, while expelling combustion products and injecting a combustible gas mixture, preferably a stoichiometric (1:2) oxygen/hydrogen mixture into that chamber, which is lined with a material suppressing heat damage and catalytic recombination of the gas mixture therein. |
227 |
High-voltage switch and its use |
US460360 |
1983-01-24 |
US4499351A |
1985-02-12 |
Georg Koppl |
To provide a high-voltage switch which can switch off in a very short time, namely in a half-period, rapid severing of the isolating screws (36) is utilized, and the high-voltage switch is designed so that the switch-off and switch-on device contains at least one isolating screw (36) by means of which a prestressed rod (28) connected to the movable contact of the high-voltage switch can be released. The half-period high-voltage switch according to the invention is used appropriately in switching systems where the half-period high-voltage switch is connected in series with at least one power circuit-breaker. The advantage is to be seen especially in the use of the high-voltage switch in switching systems where it permits a limited short-circuit cut-out capacity. |
228 |
High-speed, multi-break electrical switch |
US550201 |
1983-11-09 |
US4494103A |
1985-01-15 |
John M. Jarosz; William R. Panas |
An electrical switch includes an alternating series of first and second switch cells. Each first cell includes a first conductive member with a first bore and a first insulative member conformally located in the first bore and movable through the first bore. Each second cell includes a second insulative member with a second bore and a second conductive member conformally located in the second bore and movable through the second bore. The first and second bores have substantially the same cross-section. The cells are mounted end-to-end in the alternating series so that the bores align. Severable diaphragms electrically interconnect the second conductive member of each second cell to the first conductive member of the first cells adjacent to the second cell. The first insulative members and the second conductive members are simultaneously moved to simultaneously sever the diaphragms. A plurality of insulated gaps are thereby produced between the first and second conductive members of adjacent cells. Additional insulated gaps are produced by covering the first bore of the first conductive member and the second conductive member with insulative layers. |
229 |
Electrical control module for a current-limiting fuse |
US439443 |
1982-11-05 |
US4434415A |
1984-02-28 |
John M. Jarosz; William R. Panas |
A reusable control module mountable to a power-cartridge-operated interrupting module which includes a normally closed switch in shunt with a fuse. The control module houses a control circuit which ignites the power cartridge to open the switch. The control module includes two conductive shells threaded together to enclose the circuit, thereby providing a Faraday cage for the circuit and shielding the circuit from the environment. A current transformer is mounted in an exterior pocket in one of the shells over a mounting terminal thereon which extends out of the pocket to act as a single-turn primary for the transformer. The output of the transformer is connected to an input of the circuit. Circuit boards of the circuit are mounted within the shells, in part by a plastic plug, one end of which passes through one of the shells coaxially with a mounting neck. The other end of the plug has slots which engage and hold one edge of the boards. The plug contains a conductor connected to the output of the circuit. When the modules are mounted together via the neck, the conductor at the one end of the plug is electrically connected to the power cartridge and the shells can now carry the current in a protected circuit to the switch and the fuse. The plug is located on the axis of rotation of the shells when the shells are threaded together so that its holding and signal-carrying functions are not compromised. |
230 |
Transformer protective switch |
US163131 |
1980-06-26 |
US4389554A |
1983-06-21 |
Willie B. Freeman |
An electric switch includes a pair of separable contacts operable between open and closed positions with respect to each other. An operator shaft is utilized for moving one of the contacts, and the operator shaft has attached thereto at the opposite end an operator piston which is disposed within an operator cylinder. A chemical operator is utilized for generating a hot gas within the operator cylinder and against the operator piston to cause movement thereof. |
231 |
Electric switch and improved device using same |
US188660 |
1980-09-19 |
US4370531A |
1983-01-25 |
Thomas J. Tobin |
A high-speed switch usable at high voltage includes a pair of contacts movable apart along a fixed line. When the contacts are normally interconnected, at least one of them contributes to the definition of an enclosed chamber. Pressurizaton of the chamber by the ignition of a power cartridge therein rapidly drives the contacts apart, forming a first gap between them. When the contacts are interconnected, a first one of them is electrically connected to a terminal. As the contacts move apart, a second gap forms between the first contact and the terminal. The second gap is electrically insulated and may both be shielded from the ignition products of the cartridge and have any arc forming therein constricted and subjected to arc-extinguishing gas. The contacts may be shunted by a fuse to which current is commutated after the contacts move apart. |
232 |
Current limiting device for high voltage switching mechanisms |
US36700 |
1979-05-07 |
US4266258A |
1981-05-05 |
Adolf Eidinger; Carl D. Flossel; Georg Koppl; Alfred Ulrich; Hans Schibli |
A device for quickly reconnecting two portions of a current carrying line after separation of the line portions through actuation of a circuit breaker includes a second circuit breaker and a serially connected switch connected in parallel with a primary circuit breaker. Closure of the switch reconnects the line portions through the second circuit breaker after actuation of the primary circuit breaker. The switch can include auxiliary contacts for supplying power to an ignition device associated with the second circuit breaker, to render the second circuit breaker operable only when the switch is closed. |
233 |
Uniting two elements |
US483995 |
1974-06-28 |
US3952399A |
1976-04-27 |
Robert H. Sawyer |
There is shown an actuating device comprising a piston and cylinder unit having a piston with a metal forming configuration on the side thereof from which a piston rod projects and a recess is provided in the rod adjacent the configuration. The arrangement is such that upon impact by that side of the piston from which the rod projects on an end wall of the cylinder the material of the end wall is deformed into the recess to prevent rebound of the piston. The device is also illustrated in combination with an explosive operated initiating element. The rebound prevention principle is also shown utilized in a technique for joining two workpieces in which a fastener has a metal forming configuration adapted to deform the material of one of the workpieces into which the fastener is driven, the deformed material of the workpiece being moved into a recess adjacent the deforming configuration. |
234 |
Electropyrotechnic link |
US491462 |
1974-07-24 |
US3948143A |
1976-04-06 |
Charles R. Olsen |
An electropyrotechnic link having one or more connectors crimped or bonded into longitudinal indentations in a closed end tubular member containing a pyrotechnic pressure generator. When the pyrotechnic charge within the tubular member is activated the tubular member is expanded into cylindrical form opening the crimp, peeling any bonding material and releasing the connector or connectors. If the bonding material is of low melting point the release can be made to function upon reaching the melting point of the bonding material or upon command by an electrical signal. |
235 |
Explosion gas operated piston-cylinder structure |
US36924873 |
1973-06-12 |
US3908512A |
1975-09-30 |
STRUBIN HARALD |
A piston-cylinder drive structure particularly for use in actuating electric switchgear apparatus comprises a cylinder into which explosion gases are admitted for actuating a piston located in the cylinder. Rather than having a uniform cross-sectional area, the cross-section of the cylinder is progressively increased in the direction of piston travel and the piston includes means for effecting a like increase in its crosssectional area as it is actuated and maintains its engagement with the cylinder wall. The result is a more favorable forcetravel characteristic resulting in practically a constant pressure throughout the piston travel for the switchgear drive notwithstanding a progressively decreasing gas pressure concurrent with a progressively increasing volume within the cylinder.
|
236 |
Actuating unit |
US38132173 |
1973-07-20 |
US3896621A |
1975-07-29 |
SAWYER ROBERT H |
There is shown an actuating device comprising a piston and cylinder unit having a piston with a metal forming configuration on the side thereof from which a piston rod projects and a recess is provided in the rod adjacent the configuration. The arrangement is such that upon impact by that side of the piston from which the rod projects on an end wall of the cylinder the material of the end wall is deformed into the recess to prevent rebound of the piston. The device is also illustrated in combination with an explosive operated initiating element. The rebound prevention principle is also shown utilized in a technique for joining two workpieces in which a fastener has a metal forming configuration adapted to deform the material of one of the workpieces into which the fastener is driven, the deformed material of the workpiece being moved into a recess adjacent the deforming configuration.
|
237 |
Destructible microelectronic circuit element |
US8162570 |
1970-10-16 |
US3875431A |
1975-04-01 |
KAPP EDWARD J |
A destructible microelectronic circuit element having exothermic conductor films thereon together with thin film circuits with the exothermic films energized by a pulsed electrical energy source to destroy the identity of the thin film circuits to provide anti-compromise thin film electrical circuit modules.
|
238 |
Explosive switch |
US3793501D |
1972-12-04 |
US3793501A |
1974-02-19 |
STONESTROM D |
An explosive switch capable of opening or closing one or more poles. An explosive charge moves a piston to which are fixed one or more plungers, each plunger acting as part of a separate pole. Each plunger has a wide portion and a narrow portion. Metal contacts are provided which fit over the wide portion, making the pole normally opened, or over the narrow portion, making the pole normally closed. The piston can also disconnect a connection to the bridgewire.
|
239 |
Tank-type gas-filled circuit breaker with impulsive seal breaking means for initiating piston operation |
US3748418D |
1971-12-29 |
US3748418A |
1973-07-24 |
KAWASAKI K |
A tank type gas-filled circuit breaker has interrupting contacts contained in a pressurized insulating gas filled chamber provided within a tank which in itself forms a low-pressure gas chamber the circuit breaker includes, an operating rod of insulating material penetrating through the tank wall and the high pressure chamber and coupled to the interrupting contacts, a driving means for the operating rod including a piston operating in a cylinder disposed outside of the tank valve, means for sealing highpressure gas, e.g., air, in a chamber formed at one side of the piston in the cylinder and means for creating an impulsive driving force for operating the valve means, whereby when the impulsive force acts to release the sealing of the valve means, the high-pressure gas is instantaneously introduced into the chamber at one side of the piston, and the insulating rod is operated by the piston to separate the contacts of the circuit breaker. The valve means per se may be operated by means using electromagnetic attractive or repulsion forces, or alternatively by an impulse caused by igniting an explosive agent.
|
240 |
Explosive type circuit breaker with frangible printed circuit board |
US3748413D |
1972-03-01 |
US3748413A |
1973-07-24 |
SAWYER R |
An actuating device comprises a piston and cylinder unit having a piston with a metal forming configuration on the side thereof from which a piston rod projects, and a recess is provided in the rod adjacent the configuration. The arrangement is such that upon impact by that side of the piston on an end wall of the cylinder the material of the end wall is deformed into the recess to prevent rebound of the piston. The device is also illustrated in combination with an explosive operated initiating element.
|