Internal centering device particularly suitable for connecting t

Details Internal centering device particularly suitable for connecting t Internal centering device particularly suitable for connecting t

1991-02-05

1993-02-16

Watson, Robert C.

Work holders

Plural holders to hold workpieces relative to each other

Workpieces parallel to each other

269 481, B25B 120

Patent

active

051864410

ABSTRACT:
An internal centering device which is particularly suitable for the connection of tube ends wherein there are fitted onto a central supporting member of mainly axial development two hollow mandrels of which at least one is adapted for axial movement and at least one is articulated on the said central body and is provided with at least three radial actuators which are disposed sufficiently remotely from the corresponding articulation, for angular positioning of the mandrel in relation to the said central body, each mandrel having an outer elastic sleeve which is capable of being radially expanded by an internal hydraulic axial actuator having two opposing threads. Also described are particular types of axial actuators as well as alternative embodiments.

REFERENCES:
patent: 3069930 (1962-12-01), Stephenson
patent: 3498518 (1970-03-01), Wheeler et al.
patent: 3566505 (1971-03-01), Martin
patent: 3858846 (1975-01-01), Schmid
patent: 4387845 (1983-06-01), Mefferd

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