초록 ▼

A plug assembly 10 includes a housing 14 and one or more covers 16 coupled to the housing. The plug assembly 10 includes at least one mounting plate 12a, 12b positioned between the housing 14 and the cover 16 for movement relative thereto between an extended position and a retracted position. The pl

A plug assembly 10 includes a housing 14 and one or more covers 16 coupled to the housing. The plug assembly 10 includes at least one mounting plate 12a, 12b positioned between the housing 14 and the cover 16 for movement relative thereto between an extended position and a retracted position. The plug assembly 10 includes an actuator 17 engageble with the mounting plates 12a, 12b for moving the mounting plates between the extended position and the retracted position in response to a command issued from a controller 62. During operation, the plug assembly 10 is positioned in a conduit 18 and the mounting plates 12a, 12b are moved to the extended position thereby releasably securing the plug assembly at a desired location in the conduit.

대표청구항 ▼

1. A plug assembly comprising: a housing;at least one cover coupled to said housing;at least one mounting plate positioned between said housing and said cover for movement relative thereto between an extended position and a retracted position;an actuator engageable with said mounting plates for movi

1. A plug assembly comprising: a housing;at least one cover coupled to said housing;at least one mounting plate positioned between said housing and said cover for movement relative thereto between an extended position and a retracted position;an actuator engageable with said mounting plates for moving said mounting plates between said extended position and said retracted position in response to a command issued from a controller; and wherein during operation said plug assembly is positioned in a conduit and said mounting plates are moved to said extended position thereby releasably securing said plug assembly at a desired location and sealing said conduit;said at least one mounting plate includes a first mounting plate and a second mounting plate, each being movable in generally opposite directions between said extended position and said retracted position; andsaid first mounting plate and said second mounting plate are moveably coupled to one another by a rod having a central driving portion disposed between a first threaded portion of said rod and a second threaded portion of said rod, said first and second threaded portions of said rod each being threadably engaged with one of said first and second mounting plates. 2. The plug assembly of claim 1 wherein said housing defines an internal cavity and at least a portion of said actuator extends into said internal cavity. 3. The plug assembly of claim 1 wherein said housing defines at least one lug projecting outwardly therefrom with said at least one cover being removably positioned on said at least one lug and wherein said at least one mounting plate defines at least one aperture extending therethrough and through which said at least one lug extends. 4. The plug assembly of claim 1 wherein said actuator comprises one of a motor and a piston and cylinder assembly. 5. The plug assembly of claim 1 wherein said first threaded portion of said rod comprises a left handed thread and said second threaded portion of said rod comprises a right handed thread. 6. The plug assembly of claim 1 wherein said housing includes a tab projecting radially therefrom. 7. The plug assembly of claim 1 further comprising at least one detent mechanism positioned between said housing and said at least one mounting plate. 8. The plug assembly of claim 1 further comprising connector means mounted on at least one of said housing and said cover. 9. The plug assembly of claim 1 further comprising a power supply positioned outside of said housing for supplying power to said actuator. 10. The plug assembly of claim 1 further comprising a controller positioned outside of said housing for controlling operation of said actuator. 11. The plug assembly of claim 1 wherein at least one of said housing, said at least one mounting plate and said cover are manufactured from metal. 12. The plug assembly of claim 1 wherein at least one of said housing, said at least one mounting plate and said cover are manufactured at least one of rubber, synthetic rubber, plastic, an elastomeric materials and a composite material. 13. The plug assembly of claim 1 wherein said actuator comprises a motor having a shaft extending from opposing sides of said motor and wherein said shaft moveably couples said first mounting plate to said second mounting plate. 14. A plug assembly comprising: a housing defining an internal cavity and at least one lug projecting outwardly from said housing;at least one cover coupled to said housing;a first mounting plate and a second mounting plate each positioned between said housing and said cover for movement relative thereto between a retracted position and an extended position, said first mounting plate having at least one first slot extending therethrough and through which said at least one lug extends and said second mounting plate having at least one second slot extending therethrough and through which another of said at least one lugs extend, said first mounting plate having a first edge and said second mounting plate having a second edge, wherein said first edge and said second edge face one another and each of said first edge and said second edge have a threaded bore extending therein;a rod having a central driving portion disposed between a first threaded portion of said rod and a second threaded portion of said rod, said first threaded portion comprises a left handed thread engaged with said first threaded bore and said second threaded portion comprises a right handed thread engaged with said second threaded bore; andan actuator at least a portion of which extends into said internal cavity, said actuator being engageable with said central driving portion for moving said mounting plates between said extended position and said retracted position in response to a command issued from a controller and wherein during operation said plug assembly is positioned in a conduit and said mounting plates are moved to said extended position thereby releasably securing said plug assembly at a desired location in said conduit.