The clamp 1 comprises two arms 2, 3, a part for connecting the arms 4 and an opening 5 for lifting apparatus. Each arm includes a radially concave section 6, which in use holds a workpiece such as a scaffold tube, and an elongate section which include locking parts. The arrangement of the arms is such that the arms correspond in shape such that one arm enfolds or partly surrounds envelopes the other arm in a closed position. The locking part may involve external threads 7 on the two elongate parts which are secured together using a nut 8. The locking part may also be a clasp with a barb or a sliding lock that includes a tongue. Also claimed are methods for affixing the arms together. The arms may be connected together in a hinge fashion with a pivoting pin portion.
Clamp for lifting elongate rigid materials such as tubing and pipework
2023-02-15
Patent
Electronic Resource
English