Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Opposed registering coacting female molds
Reexamination Certificate
2005-01-11
2005-01-11
Heitbrink, Tim (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Opposed registering coacting female molds
C425S129100, C425S389000, C425S405100
Reexamination Certificate
active
06840749
ABSTRACT:
A device for impregnating an insulation of a winding bar of an electric machine includes a container accommodating the winding rod and connected to a tank containing an impregnation agent. The container, which remains open during the impregnation process, is surrounded by an evacuation container to create a negative pressure within the container. To achieve a more rapid penetration of the impregnation agent and to simplify the overall process, a vacuum-tight sleeve acts as the container, the sleeve being encompassed by a pressure-resistant sleeve, and a conduit of an assembly that generates a vacuum leads into the interior of the sleeve. The impregnation agent is supplied with a pressure that is lower than the prevailing pressure in the pressure-resistant sleeve. The container can be a multi-part tool defining an interior for surrounding and accommodating the winding bar in a positive fit at least during an evacuation and impregnation process.
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Alstom Technology Ltd
Greenberg Laurence A.
Heitbrink Tim
Mayback Gregory L.
Stemer Werner H.
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