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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 6943313 | Rotating arc fault-current interrupter A rotating arc fault-current interrupter, also known as an arc spinner interrupter, is provided that establishes an easily visible open gap via a movable blade member having a first portion for engaging a stationary main contact and a second portion formed by an arc... | 09/13/2005 |
| 5877464 | Electric current switching apparatus with dual magnet arc spinning extinguisher An electric arc extinguishing mechanism for an electric current switching apparatus employs a plurality of splitter plates in a conventional arc chute arrangement. Each splitter plate has a pair of permanent magnet structures that produce a magnetic field... | 03/02/1999 |
| 5844189 | Circuit breaker having contacts with erosion-resistant covering A circuit breaker includes a cylindrical arcing chamber filled with an insulating medium. The arcing chamber has a power current path and an insulating housing. The insulating housing has a longitudinal axis and the power current path extends along the lo... | 12/01/1998 |
| 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 |
| 5149928 | Arc spinner interrupter having contact bounce suppressor An arc spinner interrupter apparatus includes a first electrical contact assembly having a fixed contact and an arcing element. A second electrical contact assembly includes an arm selectively movable along a path into and out of engagement with the fixed... | 09/22/1992 |
| 5015810 | Arc spinner interrupter An arc spinner interrupter includes a first fixed electrical contact and a ring electrode coupled to the fixed contact through a field coil surrounding the ring electrode. A second electrical contact has an arm which moves along a path perpendicular to th... | 05/14/1991 |
| 5003138 | Rotating arc electrical switch A medium-voltage electrical switch comprises contacts actuated by a connecting rod and crank system. Parallel to the main contacts there is arranged an arcing circuit comprising a cylindrical electrode disposed inside a coil and whose internal surface coo... | 03/26/1991 |
| 4980527 | Arc spinner interrupter An arc spinner interrupter includes a first fixed electrical contact and a ring electrode coupled to the fixed contact through a field coil surrounding the ring electrode. A second electrical contact has an arm which moves along a path perpendicular to th... | 12/25/1990 |
| 4743719 | Arc interrupter In arc interrupters having fixed and movable contacts and a fixed annular electrode surrounded by an arc-driving coil, the problem of electrode collapse owing to the magnetic forces generated in the electrode and the coil is reduced or obviated by providi... | 05/10/1988 |
| 4529853 | Electric circuit breaker with self blow-out by rotation of the arc A single pressure sulfur hexafluoride circuit breaker has ring-shaped arcing contacts fixed relative to one another and a magnetic coil electrically connected in the arcing circuit to create a magnetic field for spinning an arc between the arcing contacts... | 07/16/1985 |
| 4409446 | Electrical switchgear A first contact has an end portion which engages a second contact in a contacts closed position of the switchgear and which moves transversely across a pole face of a field coil and inwardly of an axis of the latter during movement of the contacts to an o... | 10/11/1983 |
| 4329552 | Wire formed interleaved spring contact structure A contact structure for a circuit interrupter consists of a cylindrical cluster of spring wire members, each having a U shape with axially inwardly reentrantly bent tips at the base of the U shapes. Alternate members in the cylindrical cluster have their ... | 05/11/1982 |
| 4315121 | Saturable magnetic steel encased coil for arc spinner interrupter An arc spinner type interrupter has a stationary coil coupled magnetically to a disk-shaped arc runner. A magnetic core encases the coil and has an annular gap extending across the upper exposed surface of the arc runner to permit access of an arc root to... | 02/09/1982 |
| 4259554 | Thin arc runner for arc spinner interrupter An arc runner structure is described for an arc spinner type of interrupter wherein the arc runner is in series with an electrical coil which is closely coupled to the arc runner. The coil current and a circulating current induced in the arc runner produc... | 03/31/1981 |
| 4256939 | Moving contact for localized gas flow arc spinner type interrupter A moving contact structure for an arc spinner type of interrupter is provided with a flow channel which communicates with the arcing region and permits the flow of arc plasma away from the arcing region during interruption. The flow channel in one embodim... | 03/17/1981 |
| 4255631 | Exterior connected arc runner for arc spinner interrupter A circuit interrupter is described in which the arc current to be interrupted is rotated in a relatively static sulfur hexafluoride gas. The arc is rotated by a Lorentz force produced by the interaction of a magnetic field which has at least one component... | 03/10/1981 |
| 4249051 | Arc spinner interrupter with contact follower An arc spinner interrupter has an insulation barrier disposed between the rotating arc and the stationary main contacts. The barrier includes a movable insulation follower which is moved into place when the movable contact withdraws from the center of a m... | 02/03/1981 |
| 4249052 | Arc spinner interrupter with chromium copper arcing contact A single arcing ring of a chromium copper alloy is used for an arc spinner type of circuit interrupter.... | 02/03/1981 |
| 4206330 | Moving contact for radial blow-in effect for arc spinner interrupter A contact construction is disclosed for a circuit interrupter of the type in which an arc drawn between cooperating arcing contacts is caused to circulate around an axis and through a dielectric gas in order to extinguish the arc. The movable contact is s... | 06/03/1980 |
| 4079219 | SF 6 Puffer for arc spinner A single pressure sulfur hexafluoride circuit interrupter is contained in a bottle or elongated, cylindrical housing filled with gas under moderate pressure. The bottle contains arcing and main contacts arranged generally along the axis of the bottle and ... | 03/14/1978 |
| 4052577 | Magnetically driven ring arc runner for circuit interrupter A single pressure sulfur hexafluoride circuit interrupter is contained in a bottle or elongated, cylindrical housing filled with gas under moderate pressure. The bottle contains arcing and main contacts arranged generally along the axis of the bottle and ... | 10/04/1977 |
| 4052576 | Contact structure for SF6 arc spinner A single pressure sulfur hexafluoride circuit interrupter is contained in a bottle or elongated, cylindrical housing filled with gas under moderate pressure. The bottle contains arcing and main contacts arranged generally along the axis of the bottle and ... | 10/04/1977 |
