Hytorc Division Unex Corporation

Jetyd Corp.

Ulrich Wilhelm Oehms

Michael F Dolan

Jean Paul Melencio

Stefan Ebler

The invention provides a radially expanding fastener/alignment plug assembly for use with a torque power tool, the assembly including: a sleeve member (), insertable into a hole of an object, having radial expansion elements with inner surface portions which are tapered towards a first end; an expanding member (), insertable in the sleeve member, having an outer surface portion which is tapered towards a first end, cooperating with the inner tapered surface portions of the radial expansion elements of the sleeve member; and a displacement member () formed between a second end of the sleeve member and a second end of the expanding member. Advantageously, the assembly is self-reacting allowing an actuation torque to be applied to and reacted upon to create high levels of pulling and expansion force without the need for an external reaction point.

Apparatus for fastening and/or aligning objects

A radially expanding bolt assembly has a hollow element insertable into a hole of an object and having an inner surface with at least one inner surface portion which is tapered, an expanding element insertable in the hollow element and having an outer surface with at least one outer surface portion which is tapered and cooperates with the inner tapered surface portion of the hollow element, additional elements for displacing the expanding element in opposite axial directions for tightening and loosening the bolt assembly, and a washer positionable between the object and one of the additional elements at one of the axial ends, so that the one additional element displaces the expanding element in one axial direction and due to cooperation of the tapered surface portions expands the hollow element to clamp it in the hole of the object, while the other additional element displaces the expanding element in an opposite axial direction and the tapered surface portions disengage from one another so that the hollow element contracts and the radially expanding bolt assembly can be removed from the hole of the object.

Growing community of inventors

Kottenheim, Germany

Ulrich Wilhelm Oehms