Abstract: The invention provides improved and simplified production of connection ends on metal strip wound hose pieces which are separated from endless strip wound hose, by continuously guiding a laser beam about the entire periphery of the strip wound hose member to produce a welding seam, the laser beam modulated with a motion which is cyclic and parallel to the axis of the strip wound hose piece, to produce, in particular, a sinusoidal or triangular-shaped continuous welding seam.

Abstract: A control circuit for controlling a blade has a subdivision circuit (31) which subdivides the length of a separating cut into linear sections (W.sub.2, W.sub.3) and sinusoidal sections (W.sub.1). The sinusoidal sections are subdivided in a division circuit (31) into longitudinal increments (.DELTA.x). The locus of a sinusoidal partial section is stored in a unit scale in a store (31). The transverse increment corresponding to each longitudinal increment (.DELTA.x) is determined in a unit scale by interpolation, and this transverse increment is multiplied in a multiplier (33) by the amplitude (U) of the separating cut. The actual transverse increments (.DELTA.y) thus obtained are stored consecutively in a second store (35). A synchronizing and sequential circuit (37) feeds the transverse increments (.DELTA.y) stored in the second store (35) to a first motor control circuit (38) which controls the motor for the transverse movement of the blade carrier.

Abstract: Sealing insert with axial support wall having a reduced diameter portion for receiving the reinforcing section of an attached radial seal ring upon axial expansion of a thinner bridge portion by which the seal ring is attached.