Track and method for production of prefabricated concrete panels - IP.com
In a track for rail vehicles, individual prefabricated concrete panels (8,11-16) which have a greater longitudinal extent than lateral extent are arranged...
Method and device for the production of a precise concrete prefabricated part by Max Bogl Bauunternehmung GmbH & Co. KG – AU 2003218765
Get details on patent AU2003218765 - Method and device for the production of a precise concrete prefabricated part by Max Bogl Bauunternehmung GmbH & Co. KG and more at IP in Australia
Patent US4982549 - Method for end to end coupling prefabricated elements of reinforced concrete - Google Patente
A method for end to end coupling prefabricated elements of reinforced concrete, for example so as to realize a column or pillar. The elements (A, B) have cavities (5) in their ends and are placed in alignment with their respective ends comprising the cavities the one against the other, the relative angular position of the elements being such that the reinforcement metallic rods (2a) projecting beyond the end of one of the elements are introduced into the cavities of another adjacent element, and reciprocally, and that the end of the rods (2a, 2b) are introduced with clearance in positioning sleeves (6) having an opening (6') usable for welding. Then the metallic rods put end to end are welded together, and the cavities are filled in with concrete or with another appropriate material.
Patent US3952468 - Assembly of prefabricated prestressed concrete elements with the use of a ... - Google Patente
Assembly of prefabricated pre-stressed reinforced concrete elements solid with their reinforcements comprising linking means including at least one internally threaded cage, nuts in said cage, mounted on externally threaded parts directly or indirectly rigidly coupled to the reinforcements; the nuts abut against the cages by means of ball-and-socket bearings, thus making allowance for any misalignments of the elements. The reinforcements being solid with the concrete, this linking means affords for supplemental adjustment stress in particular elements only, whereby the assembly may be rendered statically indeterminate.