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| Number | Title | Issue Date |
| 6724291 | Door sensing fuse block with side extending rotary disconnect A fuse block for cabinet mounting provides a shaft that may exit a side of the cabinet to be received by a handle mounted on that side. A finger attached to the inner cabinet door provides for an interlock by engaging with a bolt communicating with the shaft prevent... | 04/20/2004 |
| 5880663 | Bridge switch A bridge switch consists of a fusible link between two balanced electrical loads connected in parallel. This fusible link stops a movable member from completing a secondary circuit. When that fusible link is destroyed the movable member is allowed to clos... | 03/09/1999 |
| 5115865 | Method and apparatus for selectively actuating wellbore perforating tools In the representative embodiments of the several methods and apparatus of the invention disclosed herein, a movable detonating member is arranged to be selectively impelled against an impact-responsive detonator on a well bore perforator having one or mor... | 05/26/1992 |
| 5052489 | Apparatus for selectively actuating well tools In the representative embodiments of the several methods and apparatus of the invention disclosed herein, a movable detonating member is arranged to be selectively impelled against an impact-responsive detonator on a well tool having one or more explosive... | 10/01/1991 |
| 4447760 | Filament switching device A filament switching device is arranged to be mounted within the screw base of a conventional, dual-filament, incandescent light bulb. The device has a frame which branches around the evacuation tube of the bulb thereby allowing sufficient room for switch... | 05/08/1984 |
| 4169999 | Thermal-magnetic switch A remotely actuable switch includes a housing defining a cavity having first and second thermally separated chambers, each enclosing a pair of spaced electrical contacts and each having an associated heating element. An electrically conductive fusible ele... | 10/02/1979 |
