Bizarre Patents
An electrified table cloth for preventing crawling insects from gaining access to the consumer's food or drink.
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 |
| 7199324 | High-voltage hybrid circuit-breaker The invention relates to a hybrid circuit-breaker which, for each pole, comprises a dielectric-gas interrupting chamber (1) which contains a first contact (1A) and a moving second contact (1B) that are disposed longitudinally to a first axis (AA... | 04/03/2007 |
| 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 |
| 6884952 | Contact finger for a high-power switchgear A contact finger module for mounting in a high-power switchgear includes at least one contact finger having a contact piece and a flexible contact piece support, which extends along a longitudinal direction and has an attachment end and a contact-making end. The con... | 04/26/2005 |
| 6211478 | Switching arrangement and method for its production In a power switch, power-switch fingers of a rated-current switching arrangement, as well as contact fingers (25) of a tulip contact and a switching pin (14) of an arcing switch arrangement, or other parts, each comprise a base body (26, 28) which, at sec... | 04/03/2001 |
| 5905242 | High voltage hybrid circuit-breaker A high voltage hybrid circuit-breaker has an arc circuit with a gas circuit-breaker connected in a series with a vacuum bulb. The housing is subdivided into a first compartment enclosed by an insulator for housing the primary contacts of the primary circu... | 05/18/1999 |
| 5493264 | Protection apparatus formed by association of a circuit breaker in series with an effector An electrical protection apparatus is formed by association of a circuit breaker electrically connected in series with an effector. Switching of the arc onto an electrode when tripping of the mechanism occurs following a fault causes shunting of the effec... | 02/20/1996 |
| 5464956 | Rotating arc interrupter for loadbreak switch A loadbreak switch is provided that utilizes a pivotally mounted movable jaw contact and a main stationary contact that is positioned in the middle of an arc runner. For operation at voltages 15 kV and above, the switch utilizes a shunt contact that bridg... | 11/07/1995 |
| 5057654 | Interrupting unit with molded housing and shunt current path therethrough An interrupting unit for a switch is provided that includes the efficient combination of a molded housing and a shunt current path therethrough. The shunt current path includes easily assembled components that provide positive contact at a point in the cu... | 10/15/1991 |
| 5023415 | Switch apparatus A switch apparatus for use in a distribution system, having a case, a pair of bushings arranged on the case so as to oppose each other, and a breaker arranged in the case such that breaking and closing actions take place in a direction perpendicular to an... | 06/11/1991 |
| 5013875 | Contact configuration with an arcing horn and an arc conducting piece A contact configuration (1) for low-voltage circuit-breakers has main and arcing contacts (6, 17; 10; 21) as well as arcing horns (22, 23) for transferring an arc into an arc quench chamber. Additional arc conducting pieces (30; 40) take over partial arcs... | 05/07/1991 |
| 5013876 | Switch contacts with improved fault-closing capability A contact arrangement is provided for a medium- or high-voltage switch including two contact surfaces that are generally parallel and relatively movable via a predetermined path between open and closed positions. During closing, the two contact surfaces d... | 05/07/1991 |
| 4849589 | Contact assembly for a circuit breaker Apparatus for simultaneously applying two independent forces to the contact blades of a movable contact assembly. The contact assembly has three contact blades joined at the base. The circuit breaker mechanism exerts a closing force through a blade carrie... | 07/18/1989 |
| 4720613 | Contact arrangement for low-voltage circuit breakers with main contacts and burn-off contacts A contact arrangement for low-voltage circuit breakers comprises a fixed and movable main contacts and fixed and movable burn-off contacts. With the burn-off contacts, arcing horns as well as an arc quenching chamber are associated. Upon heavy stress of t... | 01/19/1988 |
| 4685019 | Controlled electrical contacts for electrical switchgear Most contacts that are used in electrical switchgear are prone to erosion due to electrical arcs that are developed at the make and break of a circuit. Arcing is one of the major problems that can cause catastrophic failure of switchgear. In accordance wi... | 08/04/1987 |
| 4514606 | Disconnect switch assembly A disconnect switch is disclosed having a puffer interrupter electrically connected with and operated by a knife switch or fused disconnect switch. A puffer interrupter includes a divided pressure chamber having at least one exterior wall which is flexibl... | 04/30/1985 |
| 4488022 | Mechanism for adjusting the speed of displacement of an arc contact for a switching apparatus The invention relates to a mechanism for adjusting the speed of movement of an arcing contact for a switching apparatus for preventing main contacts of the apparatus from being damaged by arcing. A support that supports an arcing contact and a cylinder ac... | 12/11/1984 |
| 4028513 | Steel arcing contact for circuit breaker The arcing contact of a circuit breaker is made of a steel body which is plated with a copper flash and is then silver-plated. An arcing contact tip which makes actual contact to a cooperating arcing contact is made of a conventional silver-molybdenum all... | 06/07/1977 |
| 4027124 | Contact system for high-voltage power circuit breakers A contact system for high-voltage power circuit breakers which includes at least one stationary, hollow, nozzle-shaped contact, comprising an electrically conducting tube made from copper or copper alloy and a nozzle body of arc-resistant material, such a... | 05/31/1977 |
| 4000480 | Switching device A switching device includes a combination of a fixed contact, first and second electrically connected movable contacts, and an arrangement for moving the movable contacts so that the first movable contact closes to the fixed contact before the second mova... | 12/28/1976 |
| 3980851 | High amperage switching apparatus with bi-metallic arcing contacts In a high amperage switching apparatus comprising multiple, spaced apart, stationary first terminals, each in interruptable circuit communication with corresponding multiple, spaced apart, stationary second terminals, said communication being by movable k... | 09/14/1976 |
