| 摘要 |
An externally-threaded adjusting spindle 11 secured against twisting is screwed into a female element 12 which is coupled to a motor 17 via a slipping clutch and a transmission and may be driven thereby. To isolate the internal screw thread of the female element 12 from the actions of the bending moments acting on the adjusting spindle 11, the adjusting spindle 11 is com- plementarily installed in longitudinally displaceable manner in bearing members 20,21 co-axially secured with respect to the female element at each end thereof. <IMAGE> |
