Pendant-supported telescoping boom crane

A telescoping boom crane attached to a support structure, the crane comprising:

• a) a multi-sectioned, telescopically extending boom further comprising;
• a base boom section;
• at least one intermediate boom section extensibly receivable within the base boom section;
• and
• a tip boom section being extensibly receivable within an adjacent intermediate boom section;
• each of the boom sections being formed of a sheet material, the sheet material having corrugations extending along a length of the sheet material, the boom sections being columnar in shape, and having a successively smaller cross section to allow each of the boom sections to be extensibly receivable within the adjacent boom section;
• b) an extensible pendant support system further comprising;
• a plurality of pendants forming a forestay, the forestay comprising at least a tip pendant and a base pendant;
• each of the pendants being extensibly receivable within an adjacent pendant,
• a mast pivotally connected to the base boom section, and
• a backstay pivotally connected on one end to the support structure and pivotally connected at the other end to the mast, the tip pendant being attached to the tip boom section, and the base pendant being attached to the mast;
• wherein extension of the extending boom causes extension of the extensible pendant support system and wherein upon applying a load to the extending boom, the extensible pendant support system at least partially supports the extending boom.

A telescoping boom crane comprising:

• a) a multi-sectioned, telescopically extending boom further comprising;
• a base boom section;
• at least one intermediate boom section extensibly receivable within the base boom section;
• and
• a tip boom section being extensibly receivable within an adjacent intermediate boom section;
• each of the boom sections being formed of a sheet material, the sheet material having corrugations extending along a length of the sheet material, the boom sections being columnar in shape, and having a successively smaller cross section to allow each of the boom sections to be extensibly receivable within the adjacent boom section;
• b) an extensible pendant support system further comprising;
• a plurality of pendants comprising at least a tip pendant and a base pendant;
• each of the pendants being extensibly receivable within an adjacent pendant, the tip pendant being attached to the tip boom section, and the base pendant being attached to the base boom section;
• wherein extension of the extending boom causes extension of the extensible pendant support system and wherein upon applying a load to the extending boom, the extensible pendant support system at least partially supports the extending boom;
• and
• c) a releasable locking mechanism arranged to secure each of the boom sections to maintain positional relationship of the boom sections when each individual boom section is in a fully extended position.

A telescoping boom crane comprising:

• a) a multi-sectioned, telescopically extending boom further comprising;
• a base boom section;
• at least one intermediate boom section extensibly receivable within the base boom section;
• and
• a tip boom section being extensibly receivable within an adjacent intermediate boom section;
• each of the boom sections being formed of a sheet material, the sheet material having corrugations extending along a length of the sheet material, the boom sections being columnar in shape, and having a successively smaller cross section to allow each of the boom sections to be extensibly receivable within the adjacent boom section;
• b) an extensible pendant support system further comprising;
• a plurality of pendants forming a forestay, the forestay comprising a tip pendant and a base pendant;
• each of the pendants being extensibly receivable within an adjacent pendant,
• a mast pivotally connected to the base boom section, and
• a backstay pivotally connected on one end to the base boom section and pivotally connected at the other end to the mast, the tip pendant being attached to the tip boom section, and the base pendant being attached to the mast;
• c) a releasable locking mechanism arranged to secure each of the boom sections to maintain positional relationship of the boom sections when each individual boom section is in a fully extended position;
• and
• d) forestay length locking device for prohibiting extension of a subsequent pendant from the adjacent pendant once the former pendant achieves an extended position;
• wherein extension of the extending boom causes extension of the extensible pendant support system and wherein upon applying a load to the extending boom, the extensible pendant support system at least partially supports the extending boom.