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E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
E02F3/36—Component parts
E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms
E02F3/382—Connections to the frame; Supports for booms or arms
E02F3/384—Connections to the frame; Supports for booms or arms the boom being pivotable relative to the frame about a vertical axis
FR792903D1934-07-241935-07-24Dispositif roulant pour lever, transporter ou recueillir et charger des fardeaux, pour excaver ou draguer, etc.
ExpiredFR792903A
(fr)