A pit prop

Details A pit prop A pit prop

E - Fixed Constructions

21

D

E21D 15/46 (2006.01) E21D 15/00 (2006.01) E21D 15/24 (2006.01) E21D 15/54 (2006.01)

Patent

CA 2236062

A pit prop having two opposed ends and comprising two bearing plates located at the ends, two telescopically displaceable prop elements, a number of separate resiliently compressible rubber discs arranged adjacent one another and a tubular indicating element. The prop includes a further bearing plate with the discs being located between two bearing plates to permit yielding of the pit prop under a load. The indicating element has markings thereon to indicate the load condition of the prop. The prop includes a locking device for releasably locking the prop elements with respect to one another.

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