Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
E21D15/14—Telescopic props
E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
Verfahren zur herstellung einer doppelt c-foermigen federnden klemme zur befestigung einer eisenbahnschiene an eine unterlage und eine unter anwendung dieses verfahrens hergestellte klemme