Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes (base supporting structures with legs B65C5/00)

Child Classifications

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• B66C 23/005
• B66C 23/02 with non-adjustable and non-inclinable jibs mounted solely for slewing movements
• B66C 23/04 with jibs the effective length of which is variable in operation, e.g. longitudinally displaceable, extensible
• B66C 23/06 with jibs mounted for jibbing or luffing movements
• B66C 23/16 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
• B66C 23/18 specially adapted for use in particular purposes
• B66C 23/54
• B66C 23/58 arranged to carry out a desired sequence of operations automatically, e.g. hoisting followed by luffing and slewing
• B66C 23/60 Derricks
• B66C 23/62 Constructional features or details (of dredgers E02F)
• B66C 23/88 Safety gear (for cranes in general B66C15/00; for rope, cable, or chain winding mechanisms B66D1/54)