Expanding probe with expandable seals

Details Expanding probe with expandable seals Expanding probe with expandable seals

B - Operations, Transporting

21

D

26/24

B21D 39/20 (2006.01)

Patent

CA 1310174

Abstract The invention proposes a fluid pressure loaded probe for expanding a tube in portions and for simultaneously fixing several outer design elements such as cams, bearings and gear wheels, comprising a basic cylindrical member as well as sealing members and spacer sleeves slid on alternately, with tube portions to be expanded being marked off from the tube portions remaining undeformed, by the sealing elements. In accordance with the invention, the probe is characterised by a device for bringing the spacer sleeves closer to each other axially while simultaneously compressing and radially expanding the sealing elements for pressing them against the inside of the tube, and by means for limiting the axial travel of at least part of the spacer sleeves relative to the basic probe member. In this way we provide a probe which permits simultaneous expansion of individual tube portions in accurate positions accurately associated with slid-on design elements and which, while having a simple design, provides improved sealing as compared to prior art probes for expanding several portions; it ensures stability of the seals and is easy to introduce into the tube.

572935

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