US 9,808,852 B2
Hand expansion device
Egbert Frenken, Heinsberg (DE)
Assigned to GUSTAV KLAUKE GBMH, (DE)
Appl. No. 14/903,342
Filed by Gustav Klauke GmbH, Remscheid (DE)
PCT Filed Jul. 9, 2014, PCT No. PCT/EP2014/064667
§ 371(c)(1), (2) Date Jan. 7, 2016,
PCT Pub. No. WO2015/004167, PCT Pub. Date Jan. 15, 2015.
Claims priority of application No. 10 2013 107 294 (DE), filed on Jul. 10, 2013.
Prior Publication US 2016/0332206 A1, Nov. 17, 2016
Int. Cl. B21D 41/02 (2006.01); B25F 5/00 (2006.01)
CPC B21D 41/028 (2013.01) [B25F 5/005 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A hand expansion device capable of expanding pipe ends comprising:
an expanding head configured to be actuated by an electric motor and/or a hydraulic medium, the expanding head defining a longitudinal axis, wherein the hand expansion device is capable of rotating around the longitudinal axis;
an expanding mandrel on the expanding head, the expanding mandrel configured to be displaced in a displacement direction along the longitudinal axis of the expanding head;
a plurality of segments on the expanding head, the segments configured to be expanded by the expanding mandrel transverse to the displacement direction of the expanding mandrel to affect an expansion process;
a sensor on the hand expansion device capable of detecting a three-dimensional motion of the hand expansion device and to generate signals relating to the three-dimensional motion of the hand expansion device;
a switch, wherein the hand expansion device is configured to be actuated by the switch to affect a first expansion process such that the segments expand transverse to the displacement direction of the expanding mandrel in response to movement by the expanding mandrel; and
a processing unit associated with the hand expansion device, the processing unit in communication with the sensor and the switch, the processing unit receives and evaluates the signals generated by the sensor of the detected three-dimensional motion of the hand expansion device;
wherein, if and only if the processing unit determines from the signals of the sensor that the hand expansion device was rotated around the longitudinal axis a predetermined angle, then the processing unit allows a second activation of the switch of the hand expansion device to affect a second expansion process, wherein the segments expand transverse to the displacement direction of the expanding mandrel in response to a movement by the expanding mandrel.