Patents Assigned to P P M
  • Method of telescoping a crane jib, apparatus for implementing the method, and a crane jib constituting an application thereof
    Patent number: 6474486
    Abstract: The invention relates an apparatus for hoisting and handling equipment wherein the apparatus includes locking members having a locking block (30) carried by each telescopic element and including clamping member which is clamped in a rest position, an immobilization piece (40) carried by each element outside the element carrying a block configured to cooperate with the clamping member.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 5, 2002
    Assignee: P P M
    Inventor: Robert Baraniak