Patent ID: 8104738

Claim:
A concrete shell system comprising: concrete shell elements; at least one device for clamping the concrete shell elements to one another, the device having spaced apart opposing claws displaceable toward one another in a clamping direction, the claws being configured for guiding one another for enabling the displacement toward and into one another in the clamping direction; teeth disposed on one of the claws, said teeth being slanted at an angle with respect to the clamping direction; a slidable wedge disposed through claw openings for causing displacement of the claws upon translational sliding movement of the wedge within the openings in a wedge guiding direction, said wedge guiding direction being inclined at an angle between 40° and 85° with respect to said clamping direction; and spaced apart parallel linear grooves disposed in said wedge for engaging said teeth for causing the displacement of the claws upon the translational sliding movement of the wedge within the claw openings.