Abstract: A baby exerciser that facilitates parent-supported baby exercise by allowing the parent to maintain an upright posture throughout the baby exercise process. The baby exerciser has a baby seat harness with elements that support the crotch and torso of the baby in an upright position. The baby seat harness is suspended from thigh straps that attach to the thighs of a parent or adult. The baby exerciser is easily portable and can be used in private or public spaces to provide exercise and amusement to both adult and baby.

Abstract: The invention concerns a process for treating a workpiece, preferably for shaping a workpiece by ablating material, by a liquid jet guided laser beam.

Abstract: A baby exerciser that facilitates parent-supported baby exercise by allowing the parent to maintain an upright posture throughout the baby exercise process. The baby exerciser has a baby seat harness with elements that support the crotch and torso of the baby in an upright position. The baby seat harness is suspended from thigh straps that attach to the thighs of a parent or adult. The baby exerciser is easily portable and can be used in private or public spaces to provide exercise and amusement to both adult and baby.

Abstract: The invention concerns a process for treating a workpiece, preferably for shaping a workpiece by ablating material, by a liquid jet guided laser beam.

Abstract: A process for providing a protection against damages in a machine head is claimed. The process comprises the following steps: First a blind steel plate (protection plate 20) is fixed to a protection chamber (10). Then the transparent liquid jet (WJ) guided laser beam (LB) is started, which drills a transit-hole into it. This protection plate (20) has the transit-hole (23) precisely arranged on the optical axis. Therefore no further alignment is required. Further an apparatus for treating a work piece by means of a laser beam (LB) which is guided in a transparent liquid jet (WJ) is claimed. The apparatus comprises a protection chamber (10) mounted on the output (5) of a coupling unit (CU) and a protection plate (20) replaceable fixed to the first chamber (10) protecting the outlet (15) of the first chamber (10) from sputtered debris.

Abstract: A process for providing a protection against damages in a machine head, wherein the machine head launches a transparent liquid jet guided laser beam LB by means of a nozzle 3 along an optical axis for treating a work piece is claimed. The process comprises the following steps: First a blind steel plate (protection plate 20) is fixed to a front of a protection chamber (10) prior to the liquid water jet (WJ). Then the transparent liquid jet (WJ) guided laser beam (LB) is stared, which impinges on the blind steel plate (20) blank and drills a transit-hole into the blind steel plate blank. The transit-hole (23) has a size which substantially corresponds to a cross-section of the laser beam (LB) guiding transparent liquid jet (WJ). The steel plate (20) with the transit-hole (23) provides a protection plate (20) having the transit-hole (23) precisely arranged on the optical axis. Therefore no further alignment is required.